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Produkte (80)
0402ESDA-05N - 5V Bidirectional Polymer ESD Suppressor | BORN
The BORN 0402ESDA-05N is a bidirectional polymer ESD suppressor with a 5V working voltage, 50V clamp-side breakdown capability, ultra-low 1.5 pF line capacitance, and 1 nA leakage current, housed in a 2-terminal 0402 (1005 metric) surface-mount package. It is qualified to suppress electrostatic discharge events per IEC 61000-4-2 and operates over a -40C to +85C industrial temperature range. A polymer ESD suppressor is a type of transient voltage suppression device within the broader family of TVS diodes and circuit protection components. Unlike silicon avalanche TVS diodes, polymer suppressors use a conductive polymer material that switches from a high-impedance state to a low-impedance state within nanoseconds when an ESD transient exceeds its trigger threshold, shunting the surge energy away from the protected IC. This technology enables extremely low parasitic capacitance, which is the defining parameter for high-speed data line protection. Key features of the 0402ESDA-05N include its 1.5 pF typical capacitance, which minimizes signal insertion loss on USB 2.0, HDMI, and other multi-gigabit interfaces; its bidirectional 5V standoff rating suited to both single-ended and symmetric data lines; and its nanosecond response time to IEC 61000-4-2 contact and air discharges. The 1 nA reverse leakage keeps standby power consumption negligible in battery-powered designs. The polymer construction provides no DC clamping action under normal operating conditions, so the line sees essentially the suppressor capacitance only. During an ESD event, the device transitions to a conductive state and recovers automatically after the transient passes, requiring no replacement or reset. The compact 0402 footprint allows placement directly adjacent to the connector pins. Typical applications include high-speed data port protection on smartphones, tablets, and set-top boxes; ESD protection for USB, HDMI, and antenna lines in consumer electronics; and protection of sensitive RF front-ends where capacitance must stay below 2 pF. Design tip: place the suppressor as close to the connector as possible with minimal stub length, following the zero-stub pad guidance common to polymer ESD devices, so the transient is clamped before it propagates down the trace. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
1.5KE11CA - 1500W Bidirectional TVS, 9.4V VRWM | Littelfuse
The Littelfuse 1.5KE11CA is a 1500W bidirectional axial-leaded Transient Voltage Suppressor (TVS) diode designed to clamp voltage transients induced by lightning, inductive load switching, and ESD events on sensitive electronic equipment. According to the Littelfuse datasheet, it features a Reverse Working Standoff Voltage (VRWM) of 9.4V, a Breakdown Voltage range of 10.5V to 11.6V, a maximum clamping voltage of 15.6V at 97.4A peak pulse current, and is housed in a DO-201 through-hole axial package. A TVS diode is a solid-state avalanche device engineered to shunt large transient currents away from downstream circuitry in microseconds, providing far faster response than MOVs or PTC fuses. TVS diodes sit at the bottom of the protection hierarchy as discrete semiconductors, fall under the surge-protector family, and serve as the first-line defense on DC power rails, signal lines, and automotive bus networks where predictable clamping behavior is mandatory. Key differentiating specifications include 1500W peak pulse power dissipation at a 10/1000 microsecond waveform, a peak pulse current (IPPM) of 97.4A, glass-passivated chip junction construction for long-term reliability, low Zener impedance, and a maximum clamping voltage of 15.6V that keeps downstream 12V logic rails well within their absolute-maximum ratings during surge events. The bidirectional (CA suffix) variant conducts transients of either polarity, eliminating orientation errors during PCB assembly. Architecturally, the 1.5KE11CA is a silicon PN-junction avalanche suppressor with a glass-passivated surface that suppresses leakage and stabilizes breakdown characteristics across the -55C to +175C operating range. The avalanche breakdown mechanism provides sub-microsecond response, ensuring that fast-rise transients such as those defined by IEC 61000-4-2 are clamped before sensitive ICs see the overvoltage. Typical applications include 12V automotive load-dump protection per ISO 7637-2, industrial PLC 24V rail transient suppression, telecom -48V battery backplane protection, USB and HDMI port ESD/lightning protection on consumer devices, and protection of SMPS auxiliary windings from flyback spikes. The wide standoff-voltage range and 1500W rating also suit PoE PSE input protection. When designing with this part, derate surge power for temperatures above 75C using the derating curve in the datasheet, ensure lead bend radius exceeds 1.5mm to avoid axial-package cracking, and place the TVS within 50mm of the protected connector for maximum effectiveness. For multi-stage protection, pair the 1.5KE11CA with an upstream GDT or PTC to coordinate energy dissipation. This page synthesizes current distributor pricing, drop-in cross-brand equivalents, parametric comparison tables, and practical design notes not found in the manufacturer datasheet alone - giving the engineer a one-stop reference for sourcing and qualifying the 1.5KE11CA in new or existing designs.
1.5KE11CA-B - 1500W Bi-Directional TVS Diode 9.4V | Littelfuse
The Littelfuse 1.5KE11CA-B is a 1500 W axial-leaded bidirectional Transient Voltage Suppressor (TVS) diode rated at 9.4 V working standoff voltage (VRWM), 10.5 V minimum breakdown voltage, and 15.6 V maximum clamping voltage at 97.4 A peak pulse current, housed in a DO-201 (DO-27) through-hole axial package. It is designed to clamp fast transient overvoltages such as those induced by lightning, inductive load switching, and ESD, protecting downstream sensitive electronics. A TVS diode (Transient Voltage Suppressor) is a semiconductor protection device belonging to the surge protector / discrete semiconductor family. Under normal operation it presents a high-impedance path; when a transient exceeds its breakdown voltage, it avalanches into a low-impedance state within picoseconds, shunting surge energy away from protected circuits. TVS diodes sit hierarchically under discrete semiconductors -> diodes -> surge protectors, and are commonly used alongside MOVs, gas discharge tubes, and PTC resettable fuses in multi-stage protection networks. The bidirectional ('CA') construction means a single device clamps both positive and negative transients, making it ideal for AC lines and differential signal interfaces. Key specifications include 1500 W peak pulse power (10/1000 µs waveform), 97.4 A peak pulse current (IPP), <1 ps typical response time, low clamping factor (15.6 V VC / 9.4 V VRWM = 1.66), and an operating temperature range that supports industrial environments. The 5 % voltage tolerance ('A' suffix) and bidirectional polarity ('C') make the 1.5KE11CA-B particularly suited for protecting 12 V system rails, RS-485 interfaces, and telecom line cards where induced surges from outdoor cabling are common. The 1.5KE11CA-B uses a silicon PN-junction avalanche structure manufactured in a glass-passivated die, packaged in a transfer-molded DO-201 body with tin-plated axial leads for wave or hand soldering. Its robust construction supports IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity testing when properly designed into the protection network. Typical applications include 12 V automotive load-dump suppression, telecommunications line-card secondary protection, industrial 24 V PLC and sensor protection, and consumer electronics AC/DC adapter input protection. Designers should place the TVS as close to the connector or transient entry point as possible, with short, wide PCB traces to minimize parasitic inductance. Design tip: combine the 1.5KE11CA-B with a PTC resettable fuse or series resistor upstream to limit sustained fault current and extend device lifetime under repeated surge events. This page synthesizes distributor pricing, drop-in equivalents from multiple brands, and practical protection-design guidance not consolidated on any single manufacturer page.
1.5KE16ARL4G - 1500W 16V Unidirectional TVS | onsemi
The onsemi 1.5KE16ARL4G is a 1500 W axial-leaded unidirectional Transient Voltage Suppressor (TVS) diode in the Surmetic DO-201AA package, designed to clamp high-energy transients and protect voltage-sensitive downstream components. The part delivers a working standoff of 13.6 V, a minimum breakdown of 15.2 V, and a maximum clamping voltage of 22.5 V at the rated 67 A peak pulse current (Ipp) per the 10/1000 µs waveform. A Transient Voltage Suppressor (TVS) is a specialized clamping diode that operates in avalanche breakdown when the line experiences a fast over-voltage event such as an ESD pulse, inductive load kickback, or lightning-induced surge. TVS diodes sit at the front of the protection topology, upstream of bulk protection (fuses, PTCs) and downstream of the exposed connector; their job is to divert surge current away from sensitive ICs within microseconds. The 1.5KE family is the workhorse 1500 W industrial/automotive grade series defined by JEDEC register DO-201AA axial outlines. Key features of the 1.5KE16ARL4G include 1500 W peak pulse power (10/1000 µs waveform), 67 A peak pulse current (Ipp), unidirectional polarity, a typical clamping voltage of 22.5 V at Ipp, low Zener impedance in breakdown, fast response time (sub-nanosecond), and a maximum clamping factor that ensures the protected downstream rail stays within its absolute-maximum rating. The Surmetic axial package is a through-hole DO-201AA body with robust leads suitable for wave-soldering and high-vibration environments. Technically, the 1.5KE16ARL4G uses a large-junction silicon die designed for non-repetitive high-energy avalanche. Peak pulse power is specified for a 10/1000 µs exponential waveform per the industry-standard TVS test method; steady-state power dissipation is rated at 5 W (with appropriate lead length derating). Reverse leakage at standoff is in the µA range, allowing the part to remain in-circuit without measurable quiescent loss. Typical applications include DC power-line protection on 12 V industrial bus rails, automotive 12 V load-dump protection, secondary protection behind a primary TVS or PTC on long signal lines, protection of telecom line drivers, and suppression of inductive kickback from relays, solenoids, and motor windings. It is also widely used in switch-mode power supply (SMPS) output rectification and snubbing. When designing with this part, derate peak pulse power for shorter pulses (the 8/20 µs waveform allows higher Ipp) and ensure lead length matches the datasheet's thermal derating curve. Avoid continuous operation in breakdown - this part is intended for transient clamping only, not as a voltage regulator.
1.5KE18AG - 18V 1500W Unidirectional TVS | onsemi
The onsemi 1.5KE18AG is a 1500 W unidirectional Mosorb Zener Transient Voltage Suppressor (TVS) in an axial-leaded through-hole package, designed to protect voltage-sensitive components from high-voltage, high-energy transients. The "1.5KE" series defines a family of glass-passivated-junction transient voltage suppressors widely used as circuit-protection devices. A TVS diode is a solid-state silicon device that clamps an overvoltage event by avalanche breakdown, shunting transient energy away from downstream circuitry. Within the broader protection hierarchy, TVS diodes sit alongside metal-oxide varistors (MOVs) and gas discharge tubes as fast-response (< 1 ns) suppressors, prized over fuses because they self-recover after the transient has decayed. Key features of the 1.5KE18AG include a working standoff voltage of 15.3 V, a maximum clamping voltage of 25.2 V at 59.5 A peak pulse current, and a peak pulse power rating of 1500 W for an 8/20 us waveform (per IEC 61000-4-5). The device offers unidirectional polarity, a glass-passivated die for stability, and a Surmetic axial package with operating junction temperature up to 175 C. The 1.5KE18AG uses an avalanche-mode silicon-junction Zener die, where the junction is glass-passivated for long-term stability and moisture resistance. Its low Zener impedance and fast response time allow it to clamp transient events from ESD, inductive load kickback, and lightning-induced surges within nanoseconds. Typical applications include protection of 12 V and 15 V dc power rails, automotive ECU inputs, industrial PLC I/O lines, telecom -48 V system protection, and USB/HDMI interface guarding on consumer equipment. When selecting layout, mount the 1.5KE18AG as close as possible to the protected connector or IC pin and minimize lead length to reduce parasitic inductance, which otherwise degrades clamping effectiveness at high dv/dt. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single anchor for board-level protection decisions.
1.5SMC8.2A-E3/9AT - 1500W 8.2V Uni-Dir TVS | Vishay
The Vishay 1.5SMC8.2A-E3/9AT is a 1500W peak-pulse-power unidirectional TRANSZORB transient voltage suppressor (TVS) diode rated at a 8.2V working standoff voltage, packaged in the industry-standard DO-214AB (SMCJ) surface-mount outline. It is engineered to clamp 12.1V at a peak pulse current of 124A (10/1000 µs waveform) and protect downstream electronics from induced lightning, load-dump, and ESD transients on DC rails. A TVS diode (Transient Voltage Suppressor) is a clamping semiconductor that operates in avalanche breakdown when the voltage across it exceeds a defined threshold. It belongs to the protective-component hierarchy: TVS diode → ESD/surge protector → discrete semiconductor → circuit protection device. Under normal operation the part presents a high-impedance path; when a transient pushes the line above its breakdown voltage (8.2V nominal / 7.02V reverse standoff), it conducts in nanoseconds and shunts the surge energy to ground, holding the protected rail to a safe clamping voltage. Key specifications include a 1500W peak pulse power dissipation on a 10/1000 µs waveform, 124A peak pulse current (Ipp), 12.1V maximum clamping voltage at Ipp, and a glass-passivated chip junction that improves long-term reliability under repetitive surge events. The TRANSZORB series uses a low-profile DO-214AB package suitable for automated placement and offers uni-directional (suffix A) polarity. Architecturally, the device is a silicon avalanche junction that has been glass-passivivated for environmental stability and given a low-inductance, large-area die bond to handle the 1500W transient. The flip-chip-style construction minimizes lead inductance so the clamping response remains sub-nanosecond, preserving the protected IC's input stage during fast-edge ESD events. Typical applications include 12V automotive load-dump protection, industrial 24V bus transient suppression, USB Type-C VBUS line protection, and telecom port protection against secondary lightning surges. Any low-voltage DC rail driving sensitive CMOS logic, microcontrollers, or RF transceivers in harsh EMI environments can leverage this part. When designing with this device, observe the derating curve over temperature - peak pulse power falls linearly from 1500W at 25°C toward zero at the maximum TJ. Place the TVS as close as possible to the connector entry point and keep the trace to ground short and wide to minimize parasitic inductance that would otherwise let voltage overshoot above the 12.1V clamp rating. This page synthesizes distributor pricing, parametric drop-in alternatives sourced from cross-reference tools, and applied design guidance beyond what is published in the manufacturer's datasheet alone.
1.5SMCJ54C - 1500W TVS Diode 54V Bidirectional SMC | Diotec
The Diotec 1.5SMCJ54C is a 1500 W peak-pulse surface-mount transient voltage suppressor (TVS) diode in a bidirectional configuration with a stand-off working voltage of 54 V, housed in a DO-214AB (SMC) plastic package. It is engineered to clamp fast transient events such as ESD, EFT, and lightning-induced surges on 48 V telecom, industrial-bus, and DC power-distribution lines, providing a maximum clamping voltage of approximately 87.1 V at the rated 1500 W peak pulse power (10/1000 µs waveform). What is a TVS diode? A transient voltage suppressor is a discrete semiconductor protection device that responds to over-voltage events in the nanosecond time domain by avalanching into a low-impedance state, shunting surge current away from sensitive downstream circuitry. TVS diodes sit within the broader hierarchy of discrete semiconductors (diodes -> protection devices -> TVS) and are commonly specified alongside metal-oxide varistors (MOVs) and gas discharge tubes (GDTs) as a second-tier clamp after primary over-current protection. The "C" suffix indicates bidirectional operation, meaning a single part protects both polarities of an AC or DC-coupled bus without orientation sensitivity. Key features include a minimum breakdown voltage of 60.0 V and a maximum breakdown of 66.0 V at 1 mA, a maximum reverse leakage of 5 µA at the rated stand-off, a peak forward surge rating suited for the SMC footprint, and a glass-passivated junction rated for 150 °C junction temperature. The low-profile DO-214AB (SMC) body has Underwriters Laboratory Flammability Classification 94V-0 and supports 260 °C / 10 s high-temperature soldering for lead-free reflow compatibility. Typical applications include 48 V PoE protection, telecom line-card secondary protection, industrial 24/48 V DC bus transient suppression, photovoltaic inverter input clamping, and DC motor drive H-bridge protection. Designers also use 1.5SMCJ54C series parts as secondary protection after a primary GDT or PTC to limit let-through energy. When designing with this device, verify that the chosen working voltage (Vrwm = 54 V) sits above the maximum continuous operating voltage of the protected bus, and confirm that the peak-pulse power derating curve at the expected surge duration does not exceed 1500 W. Bidirectional parts require no orientation marking, simplifying PCB layout and rework.
AQ15-02HTG - 15V 500W 2-Channel TVS Diode Array | Littelfuse
The Littelfuse AQ15-02HTG is a 2-channel, 500 W transient voltage suppressor (TVS) diode array designed to protect sensitive electronics from electrostatic discharge (ESD), electrical fast transients (EFT), and lightning-induced surges. Housed in a compact SOT-23-3 surface-mount package, it provides a working voltage of 15 V, a clamping voltage of 30 V at 15 A (8/20 µs), and a peak pulse power rating of 500 W (8/20 µs). A TVS diode array is a class of discrete semiconductor protection device that uses avalanche-breakdown junctions to clamp transient overvoltages to safe levels in microseconds. TVS arrays sit in the protection-component hierarchy between simple Zener clamps and multi-stage gas-discharge or polymer suppressors, and they belong to the broader category of circuit-protection semiconductors. By integrating two steering diodes and a central TVS die in a single 3-pin package, the AQxx-02HTG series provides differential or single-ended protection on data lines and power rails without requiring multiple discrete components. Key features include ±30 kV ESD protection per IEC 61000-4-2 (contact and air discharge), ultra-low capacitance of 85 pF suitable for high-speed interfaces, low clamping voltage of 30 V at 15 A peak pulse current, and a low leakage current of 1 µA at the working voltage. The SOT-23-3 package is footprint-compatible with industry-standard 3-pin SOT-23 outlines, enabling drop-in placement on existing PCB layouts. The AQ15-02HTG uses an avalanche-junction TVS structure combined with low-capacitance steering diodes, achieving sub-nanosecond turn-on time. This architecture absorbs repetitive strikes without performance degradation, making it ideal for industrial and automotive environments exposed to frequent ESD events. The 85 pF line capacitance is acceptable for CAN, RS-485, and general-purpose I/O protection but should be evaluated for USB 2.0 high-speed data lines where lower capacitance is preferred. Typical applications include industrial CAN bus protection, RS-485 transceiver protection, automotive ECU I/O protection, sensor interface protection, factory automation I/O, and consumer electronics ESD protection on USB and HDMI ports. The AQxx-02HTG series is AEC-Q101 qualified for automotive use. When designing with this device, place the AQ15-02HTG as close as possible to the connector or ESD entry point, keep the trace between the protected IC and the TVS short, and provide a low-impedance ground return to the chassis or earth ground. Avoid routing protected traces beneath the device to minimize parasitic coupling. This page synthesizes distributor pricing, drop-in alternatives, and practical layout guidance not aggregated in the manufacturer datasheet, giving engineers a single reference for component selection, BOM risk mitigation, and PCB design.
CDDFN2-T3V3SC - 3.3V Bidirectional TVS Diode, DFN-2 | Bourns
The Bourns CDDFN2-T3V3SC is a 3.3 V bidirectional surface-mount Transient Voltage Suppressor (TVS) housed in a sub-miniature DFN-2 (0402-size, 1.0 mm x 0.6 mm x 0.5 mm) package. It delivers ESD, EFT and surge protection for external ports of portable electronic devices and provides a typical clamping voltage of 9 V at 42 A peak pulse current (8/20 us waveform). The device is designed for direct PCB mounting on high-density I/O lines where a board area is impossible. A TVS diode is a semiconductor clamp that diverts over-voltage energy away from sensitive downstream circuitry. When the line voltage exceeds the device's breakdown threshold, the TVS enters avalanche breakdown within nanoseconds and shunts the transient current to ground, limiting the peak voltage seen by the protected IC. TVS diodes sit at the first tier of a protection scheme (next to gas-discharge tubes and PTC fuses) and are the fastest-responding element, making them ideal for suppressing ESD (electrostatic discharge) and EFT (electrical fast transient) events at connector pins. As a discrete protection component, the TVS diode belongs to the broader family of surge protection devices used in transient voltage suppression. Key specifications include a 3.3 V working voltage (VRWM), 9 V typical clamping voltage (VC) at 42 A Ipp (8/20 us), bidirectional polarity, and a sub-nanosecond response time. The DFN-2 (0402-style) package occupies 0.6 mm footprint area per side and operates across -55 C to +150 C. It is qualified to IEC 61000-4-2 (ESD) air-discharge ratings typical of the family, and the device is RoHS compliant and lead-free. The CDDFN2-T3V3SC uses a silicon avalanche junction in a bidirectional configuration, meaning a single device protects both polarities of an AC or differential data line. The 8/20 us surge waveform rating indicates the device can survive indirect lightning-induced surges and inductive load switching transients without degradation. Typical applications include USB 2.0/3.0 data line protection, HDMI/MIPI/MDDI interfaces, SIM card protection, headset/microphone audio jacks, portable set buttons, and any 3.3 V logic rail exposed to user contact. The DFN-2 footprint makes it especially suitable for compact handheld and wearable designs where every millimeter of PCB space counts. When designing with the CDDFN2-T3V3SC, ensure the protected signal line does not exceed the 3.3 V working voltage in normal operation, place the device as close as physically possible to the connector pin, and provide a low-impedance ground return directly beneath the package thermal pad. The device's low capacitance makes it compatible with high-speed data lines, but always verify the total channel capacitance against the interface specification.
CDDFN2-T5V0SC - 5V Bidirectional TVS Diode, 9.5V Clamp | Bourns
The Bourns CDDFN2-T5V0SC is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode rated at 5 V working voltage with a 9.5 V clamping voltage at 18 A peak pulse current (8/20 µs waveform), housed in a miniature 2-pin DFN (1.0 × 0.6 mm) package. It is engineered to absorb ESD, EFT, and surge transients on external I/O ports of portable and handheld electronics, and integrates a steering diode network for clean bidirectional clamping from either polarity. A Transient Voltage Suppressor (TVS) diode is a clamping semiconductor device designed to limit transient overvoltages by avalanching into a low-impedance state when its breakdown voltage is exceeded. Within the power management hierarchy, TVS diodes sit alongside ESD protection arrays and varistors as the first line of defense for sensitive downstream ICs, providing sub-nanosecond response and a defined non-linear V-I curve. Bidirectional TVS parts such as the CDDFN2-T5V0SC are particularly suited to AC-coupled signal lines and differential data buses where polarity can reverse. The CDDFN2-T5V0SC delivers 18 A peak pulse handling on the 8/20 µs surge waveform and is rated to absorb ESD strikes per IEC 61000-4-2 at both contact and air discharge levels. Its ultra-small 1.0 × 0.6 mm DFN footprint allows placement immediately at the connector, minimizing parasitic loop area and improving coupling efficiency into the suppressor. Low clamping factor and low dynamic resistance keep the residual voltage seen by downstream ICs well below their absolute-maximum ratings. Internally the device uses a Zener-based avalanche junction combined with a steering-diode bridge, giving symmetric positive and negative clamping. The low leakage at 5 V bias preserves battery life in always-connected portable designs, while the wide operating temperature range supports industrial and outdoor deployments. The leadless DFN-2 package offers a low-inductance current path that outperforms leaded alternatives such as SOD-123 at multi-kilovolt ESD. Typical applications include USB Type-C data line protection on smartphones, tablets, and laptops, HDMI/MIPI/LVDS interface protection on display panels, antenna port ESD protection on cellular and Wi-Fi modules, headset audio jack protection, and portable medical handheld devices. The wide surge rating also covers industrial sensor interfaces and IoT edge nodes that may be exposed to EFT or lightning-induced surges on long cable harnesses. Place the CDDFN2-T5V0SC as close as physically possible to the external connector pin, with a short, direct ground return to the chassis or board ground pour. Keep the trace between the protected line and the device under 2 mm to maximize ESD suppression, and avoid routing any sensitive analog signal traces underneath the pad to prevent coupling of residual transients. This page synthesizes distributor pricing tiers, verified drop-in alternatives, and PCB-layout guidance that go beyond what is shown on the Bourns datasheet, giving engineers a single source for selection, sourcing, and design-in.
CDSOT23-SM712 - 7V/12V Asym RS-485 TVS Array 400W | Bourns
The Bourns CDSOT23-SM712 is a surface-mount transient voltage suppressor (TVS) diode array housed in a SOT-23-3 package, providing 400 W peak pulse power per line for asymmetrical protection of RS-485/RS-422 data lines. The device integrates two TVS diodes with a Working Peak Reverse Voltage of 7 V (positive side) and 12 V (negative side), Minimum Breakdown Voltage of 7.5 V and 13.3 V respectively, and maximum clamping voltages of 14 V and 26 V at 17 A (8/20 us waveform). The asymmetry is intentional - it tracks the wider negative common-mode range of RS-485 transceivers that must tolerate -7 V to +12 V. A TVS diode array is a specialized class of transient voltage suppressor that integrates multiple steering/clamps in one package to protect differential data ports. The CDSOT23-SM712 belongs to the diode array > TVS array > ESD protection IC > circuit protection hierarchy. These arrays are essential companions to bus transceivers (RS-485, CAN, Profibus), where the transceiver's own absolute-maximum ratings are routinely violated by ESD, EFT, or surge events on the bus cable. Key features include IEC 61000-4-2 (ESD) protection to +/-30 kV air and +/-30 kV contact, IEC 61000-4-4 (EFT) to 40 A (5/50 ns), and IEC 61000-4-5 (surge) to 17 A (8/20 us). The device provides low capacitance (per datasheet typical application) to preserve signal integrity at high data rates, and the SOT-23-3 footprint is the industry-standard pinout for SM712-style arrays. A low leakage current at 5 V maximises battery life in quiescent-mode industrial nodes. The CDSOT23-SM712 uses an asymmetric avalanche-breakdown architecture: the 7 V TVS clamps positive transients on each data line relative to ground, while the 12 V TVS clamps the larger negative excursions permitted by RS-485. This dual-window topology is more efficient than two identical TVS diodes, because a single 12 V symmetric array would clip legitimate -7 V bus signalling, while a 7 V symmetric array would not survive the -25 V cable discharge that the RS-485 standard tolerates. The Bourns design matches the SM712 reference footprint exactly, so engineers can swap between vendors (Bourns, ST, NXP, MSKSEMI, YINT) without PCB rework. Typical applications include RS-485/RS-422 fieldbus nodes in industrial automation, Profibus and Modbus links, CAN bus nodes in heavy machinery and EV charging, HVAC controllers, building automation, smart-meter communication ports, and any line-driver exposed to ESD during cable mating or lightning-induced surge on long outdoor runs. The asymmetrical window is also useful for CAN-H and CAN-L protection where one rail must withstand -12 V cross-wiring faults. When designing with this device, place the CDSOT23-SM712 within 10 mm of the bus connector and keep the ground return path short and wide. Do not rely on the TVS alone for surge survival above 17 A - upstream PTCs or PTC+fuse combinations may be required to meet IEC 61000-4-5 level 4. The SOT-23-3 pad pattern is identical to industry-standard SOT-23, allowing use of standard land pattern footprints. This page synthesizes distributor pricing, drop-in alternatives, and practical PCB layout notes not found in the manufacturer datasheet alone - including a same-package alternative table engineers can use when second-sourcing for supply-chain resilience.
CDSOT23-T24CAN-Q - 24V CAN Bus TVS, 40V Clamp, AEC-Q101 | Bourns
The Bourns CDSOT23-T24CAN-Q is a dual bidirectional TVS diode array for CAN bus protection, offering a 40 V clamping voltage, 8 A (8/20 us) peak pulse current, and a minimum breakdown voltage of 26.2 V, housed in a 3-pin SOT-23 (SOT-23-3) surface-mount package. It is AEC-Q101 qualified for automotive applications. A TVS (Transient Voltage Suppressor) diode is a circuit-protection semiconductor that clamps transient overvoltage events, such as electrostatic discharge (ESD) and surge transients, by avalanche breakdown before they can damage sensitive transceiver circuitry. Within the protection hierarchy, TVS diode arrays sit at the board level of a layered protection strategy, complementing chip-level protection integrated inside the CAN transceiver itself. Arrays like this one integrate two TVS elements in a single package so that both lines of a differential bus are protected by one component. Key features include the dual bidirectional topology purpose-built for CANH and CANL differential lines, a minimum breakdown voltage of 26.2 V that guarantees the device will not conduct during a 24 VDC power-cross miswiring event, and a 40 V clamping voltage at the 8 A (8/20 us) surge level. The AEC-Q101 qualification ensures reliability under automotive stress conditions. The device uses avalanche breakdown diode technology with a low-clamping, fast-response characteristic. Because the protection elements are bidirectional, they clamp negative transients symmetrically on both CAN lines, protecting the transceiver differential I/O against ISO 7637-style and IEC 61000-4-5 style surge events referenced in Bourns CANbus application notes. Typical applications include automotive CAN bus nodes, body control modules, industrial CANopen and DeviceNet networks, and 24V truck and off-highway vehicle bus systems where 24 V power miswiring tolerance is mandatory. Design consideration: place the TVS array as close as possible to the connector with short, wide low-inductance traces to ground so the clamping path stays effective at fast transient edge rates. This page synthesizes distributor availability, verified drop-in alternatives, and practical CAN protection design guidance not found in the manufacturer datasheet.
CDSOT23-T24CAN-Q-X - 24V CANbus TVS Protector | Bourns
The Bourns CDSOT23-T24CAN-Q-X is an AEC-Q101-qualified dual bidirectional TVS diode array CANbus protector in a 3-pin SOT-23 package, rated for 8 A (8/20 us) Ipp surge current, 40 V clamp voltage, and a minimum breakdown voltage of 26.2 V so it does not conduct during a 24 VDC power cross event. A CANbus protector is a specialized transient voltage suppression (TVS) diode array that clamps electrostatic discharge (ESD) and surge transients on the two differential data lines of a Controller Area Network (CAN) interface. TVS arrays belong to the broader circuit protection family of semiconductors, which also includes varistors, gas discharge tubes, and surge protectors. On the signal-chain hierarchy, the protector sits between the CAN transceiver pins and the physical bus wiring, diverting fault energy to ground before it can damage sensitive silicon. Key features of the CDSOT23-T24CAN-Q series include AEC-Q101 automotive-grade qualification, surge immunity per IEC 61000-4-5 (Level 1), and ESD robustness beyond IEC 61000-4-2 up to 30 kV. The dual bidirectional topology protects both CANH and CANL lines with a single SOT-23 component, minimizing board area and stray inductance. The 26.2 V minimum breakdown voltage is deliberately chosen so the device remains idle during 24 VDC power cross faults common in industrial and truck installations. Technically, the device uses two bidirectional avalanche diodes sharing a common ground pin. Under a +500 V surge event, Bourns clamp voltage measurements in the datasheet show conduction at approximately 40 V clamp rating at the specified Ipp, keeping the voltage at the transceiver pins well below typical absolute maximum ratings. Bidirectional clamping handles both positive and negative surge polarities without polarity-sensitive installation. Typical applications include CANbus transceiver protection in automotive body and powertrain ECUs, 24V industrial CAN networks in factory automation, and CAN interfaces on trucks, agricultural machinery, and battery management systems where 24 V power cross events must be tolerated. When designing with this device, place it as close as possible to the CAN connector, with a short, wide ground return path; the series termination resistors should sit between the protector and the transceiver to limit peak diode current. This page adds information gain beyond the manufacturer datasheet by synthesizing distributor availability, verified drop-in alternatives including the NXP PESD2CAN cross reference, and practical CANbus layout guidance in one place.
DESD3512SO - 35V CAN Bus ESD Protection Diode | Diodes Inc.
The Diodes Incorporated DESD3512SO is a bi-directional ESD and surge protection TVS diode designed to protect two CAN bus data lines, with a 35V working standoff voltage, a 13.6V minimum breakdown voltage, a 30V clamping voltage at 4A (8/20us surge), and a peak pulse power rating of 330W, housed in a 3-pin SOT-23 surface mount package. An ESD protection diode (also called a TVS diode or transient voltage suppressor) is a semiconductor device that clamps fast, high-energy voltage transients - electrostatic discharge events, cable surge pulses, and inductive spikes - before they can damage sensitive transceiver ICs. Within the power and signal integrity hierarchy, it sits in the broader family of circuit protection devices alongside varistors, gas discharge tubes, and polymer ESD suppressors, offering the lowest capacitance and fastest response in exchange for finite surge energy ratings. Key features include qualification to AEC-Q101 with PPAP support, making it suitable for automotive production programs; a bi-directional configuration that clamps both positive and negative transients on asymmetrically driven CAN lines; low leakage current in the standby state; and surge capability of 4A to 11A peak current per the 8/20us waveform. The device protects both CAN_H and CAN_L data lines from a single 3-pin package, saving board space versus two discrete suppressors. Architecturally, the DESD3512SO integrates two transient voltage clamping structures sharing a common ground reference. When a transient on either data line exceeds the breakdown threshold, the structure avalanches within nanoseconds, diverting surge current to ground and holding the line voltage near the 30V clamping level at rated surge current. Bi-directional behavior ensures negative transients from ground bounce or wiring faults are also clamped. Typical applications include CAN bus physical layer protection in automotive body control modules, engine management ECUs, and industrial CANopen or DeviceNet networks, where the 35V standoff accommodates the rough voltage environment of 12V and 24V vehicle and factory systems. For reliable clamping, place the DESD3512SO directly at the CAN connector with short, wide traces to ground, and add a series common-mode choke between the protection stage and the transceiver to coordinate surge sharing. This page synthesizes distributor pricing, verified datasheet parameters, and practical automotive layout guidance not consolidated in the manufacturer datasheet alone.
DUP2105SOQ - 24V Dual CAN/LIN Bus TVS Protector | Diodes
The Diodes Incorporated DUP2105SOQ is a dual-line CAN bus protector TVS diode array rated for a 24V reverse standoff voltage, 44V clamping voltage, and 8A peak pulse current (Ipp), housed in a 3-pin SOT-23 surface-mount package. This Automotive AEC-Q101 qualified device provides bi-directional ESD and transient protection for two bus lines in a single footprint. A TVS (Transient Voltage Suppressor) diode is a clamping device in the broader family of circuit protection components - alongside surge protectors, varistors, and ESD suppressors - that diverts harmful transient energy away from sensitive ICs. Bus protector arrays like the DUP2105SOQ are specialized TVS devices optimized for differential communication lines such as CAN (Controller Area Network) and LIN (Local Interconnect Network), where two lines must be clamped symmetrically to ground without distorting bus signaling. Key features include a 24V working standoff voltage that accommodates automotive 12V and 24V bus rails with margin, an 8A Ipp surge rating per the 8/20us pulse standard, and low clamping voltage of 44V that keeps downstream CAN/LIN transceiver pins within their absolute maximum ratings. The device meets stringent automotive ESD requirements, protecting against ESD, EMI, and other harmful transient voltage events specified in automotive OEM specifications. Architecturally, the DUP2105SOQ integrates two bi-directional TVS elements sharing a common structure in one low-capacitance die arrangement, minimizing parasitic contribution to the bus while providing symmetric clamping. Its small SOT-23 footprint lets it be placed directly at the transceiver-side connector, the position where protection is most effective because transient energy is diverted before it propagates along PCB traces. Typical applications include CAN bus protection in body control modules, LIN transceiver protection in door modules and seat controllers, gateway modules, automotive sensor interfaces, and industrial CAN networks exposed to harsh transients. The new-generation TVS design is explicitly targeted at automotive LIN and CAN transceiver protection per the manufacturer datasheet. When designing with this device, place it as close as possible to the CAN/LIN connector or transceiver pins, and keep the ground return path short and low-inductance; the protection quality depends heavily on layout, not just the diode ratings. Verify the clamping voltage at your expected surge current leaves margin under the transceiver absolute maximum. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all parameters verified against Diodes Incorporated and distributor data as of 2026-10-20.
ESD5481MUT3G - 5V Bidirectional ESD Protection TVS | onsemi | X3-DFN-2
The onsemi ESD5481MUT3G is a bidirectional ESD protection Zener/TVS diode housed in an ultra-compact 2-pin X3-DFN package measuring 0.6 x 0.3 mm (0201-equivalent footprint). It is engineered to protect voltage-sensitive components on data lines from electrostatic discharge (ESD) events, with a working voltage of 5 V, a clamping voltage of 15 V at 2 A (8/20 us waveform), and exceptionally low leakage current. A TVS (Transient Voltage Suppressor) diode is a specialized semiconductor device designed to clamp fast transient overvoltages - such as those caused by ESD strikes, cable discharge events, or inductive switching - to a safe level before they damage downstream ICs. In the broader hierarchy, TVS diodes belong to circuit protection devices, which sit alongside suppressors, fuses, and varistors under the umbrella of power management and protection semiconductors. Bidirectional TVS devices like the ESD5481MUT3G protect both positive and negative transients on AC or DC-coupled signal lines, simplifying PCB layout by eliminating orientation concerns. Key features of the ESD5481MUT3G include a 5 V reverse working voltage (VRWM), 15 V clamping voltage (VC) at the rated 2 A pulse, sub-nanosecond response time typical of TVS avalanche technology, and an extremely small PCB footprint suited to portable electronics. According to the onsemi datasheet, the device is designed to deliver best-in-class ESD clamping with low leakage and fast response. The architecture is a silicon avalanche-breakdown Zener structure, which inherently clamps at its breakdown voltage and resets automatically once the transient subsides - no manual reset or replacement is required. This makes it ideal for dense, miniaturized designs where serviceability is limited. Typical applications include USB 2.0/3.0 data line protection on smartphones, tablets, and wearables; HDMI/MIPI/LVDS interface protection; MP3 players, digital cameras, and other portable consumer electronics; and general-purpose I/O protection on microcontrollers and SoCs where board space is at a premium. When designing with the ESD5481MUT3G, place the device as close as possible to the connector or vulnerable pin, keep the ground return path short and wide, and pair it with proper chassis-ground bonding to maximize ESD dissipation. Always verify clamping voltage against the absolute maximum rating of the downstream IC. This page synthesizes distributor pricing, drop-in alternatives in the same X3-DFN package, and practical design guidance beyond what is found in the onsemi datasheet.
ESD762DBZR - ±24V Bidirectional ESD/TVS Diode | Texas Instruments
The Texas Instruments ESD762DBZR is a bidirectional dual-channel ESD protection diode rated at ±24 V working voltage with ±20 kV IEC 61000-4-2 air-gap ESD discharge tolerance and 1.7 pF typical line capacitance, housed in a 3-pin SOT-23 (DBZ) package. The device integrates a TVS (transient voltage suppressor) clamp structure that activates within nanoseconds, suppressing electrostatic discharge and surge transients that could otherwise damage downstream USB-PD controllers, audio codecs, or sensitive analog front ends. The '36 V (Typ)' clamping figure listed by distributors corresponds to the peak pulse voltage reached during an 8/20 µs surge event at 2.5 A peak pulse current. A TVS diode is a semiconductor clamp designed to protect interface lines (USB, HDMI, audio, GPIO, industrial buses) by diverting transient over-voltage energy away from protected ICs. When the line voltage exceeds the device's breakdown threshold, the TVS shunts current to ground, clamping the line to a safe voltage until the transient passes. TVS diodes sit within the broader surge-protection hierarchy: TVS diode -> transient suppressor -> circuit protection component -> passive/semiconductor protection device, and they are specified by two complementary industry standards, IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge). Key features include 1.7 pF typical diode capacitance (suitable for USB 2.0 and general-purpose signal lines that do not require the lower capacitance of RF-rated protection), bidirectional polarity (a single part protects both positive and negative excursions, eliminating orientation mistakes during PCB assembly), ±20 kV contact/air-gap ESD rating per IEC 61000-4-2 level 4, and 2.5 A peak pulse current handling on the 8/20 µs waveform. The SOT-23-3 footprint offers a compact 2.9 mm x 1.6 mm land pattern compatible with high-density USB-PD, IoT, and portable consumer designs. The ESD762 uses a Zener-triggered avalanche clamp architecture. Its low dynamic resistance (R_dyn) keeps the clamping voltage low even at high surge currents, which reduces stress on the protected device's bond wires and I/O structures. Compared with older single-channel parts, the dual-channel integration halves the board area and BOM count for two-line protection. Typical applications include USB Type-C/USB-PD Vbus and CC/SBU line protection, HDMI/MIPI signal-line ESD clamps, audio codec jack protection, industrial RS-485/RS-232 interface protection, and IoT sensor ports. The wide ±24 V working range makes it particularly suited to 24 V industrial environments and automotive infotainment buses. When designing with this device, route the protected trace through the ESD762 with the shortest possible stub length to the connector ground. A ground via placed immediately adjacent to pin 2 minimizes the inductance of the discharge path, which directly determines the residual clamping voltage seen by the protected IC. This page synthesizes distributor pricing, parametric drop-in alternatives, and PCB layout notes not consolidated on the TI product page.
ESD9B3.3ST5G - Bidirectional ESD TVS Diode 3.3V SOD-923 | onsemi
The onsemi ESD9B3.3ST5G is a bidirectional transient voltage suppressor (TVS) diode for ESD protection with a 3.3 V reverse working voltage, 11.5 V clamping voltage, and 2 A (8/20 us) peak pulse current capability, housed in a 2-pin SOD-923 surface-mount package. A TVS diode is a type of clamp circuit protection device in the broader family of transient voltage suppressors and surge protection components. Placed in parallel with a sensitive signal or power line, it remains high-impedance during normal operation and conducts within nanoseconds when an ESD or surge transient exceeds its breakdown voltage, diverting the surge energy to ground and clamping the line voltage to a safe level. The ESD9B Series is designed to protect voltage-sensitive components from ESD. According to the onsemi ESD9B datasheet, the series offers excellent clamping capability, low leakage, and fast response time for best-in-class protection on designs exposed to ESD events. The bidirectional 3.3 V configuration supports symmetric positive and negative transient clamping on lines operating up to 3.3 V rails, with IEC 61000-4-2 style ESD robustness of plus or minus 18 kV (air and contact) as reported by distributor listings. Architecturally, the device uses a silicon avalanche breakdown structure that requires no external drive, no control logic, and no supply rail, making it a zero-quiescent-current protection element. Its micro-packaged SOD-923 footprint minimizes loop inductance, which directly improves clamping performance on fast-rise-time ESD waveforms; shorter loop inductance equals lower residual clamped voltage at the protected IC. Typical applications include cellular phones, MP3 players, digital cameras, tablets, and other portable electronics where board space comes at a premium. The ESD9B3.3ST5G is commonly placed on USB data lines, button/keypad inputs, audio jack lines, GPIO pins, and antenna-fed RF lines running from 3.3 V or lower rails. Design consideration: place the TVS as close as possible to the connector or entry point and route to a low-impedance ground stitch; the series inductance of a long trace will dominate the residual clamp voltage during a nanosecond ESD pulse. This page synthesizes verified distributor data, pricing tiers, drop-in alternatives, and practical ESD layout design notes not found in the manufacturer datasheet, providing selection guidance for engineers choosing between 3.3 V and 5 V bidirectional micro-packaged TVS options.
ESD9X5.0ST5G - 5V ESD TVS Diode SOD-923 | onsemi
The onsemi ESD9X5.0ST5G is a uni-directional ESD protection TVS diode with a 5V reverse working voltage, 12.3V typical clamping voltage at 8.7A (8/20us waveform) peak pulse current, housed in an ultra-small 2-pin SOD-923 surface-mount package. A TVS (Transient Voltage Suppressors) diode is a clamping device that reacts to electrostatic discharge and other fast transient overvoltage events within nanoseconds, diverting damaging current away from sensitive ICs. Within the semiconductor hierarchy, the ESD9X5.0ST5G belongs to the ESD protection diode family, a subset of the TVS diode category, which itself sits under discrete protection semiconductors in circuit-protection systems. Key features include excellent clamping capability, low leakage current, and fast response time, which onsemi describes as providing best-in-class protection for designs exposed to ESD threats. The device withstands ESD strikes up to +/-30kV per distributor listings and handles 8.7A of peak pulse current on the industry-standard 8/20us waveform. Its 5V reverse standoff voltage makes it suitable for protecting 5V and lower logic rails without significant loading. The ESD9X Series architecture uses a silicon avalanche clamping structure that activates within nanoseconds of a transient event. Unlike crowbar-type protection devices, it clamps without latching, returning to a high-impedance state automatically after the surge passes. Low junction capacitance keeps signal integrity intact on moderately fast digital lines. Typical applications include cellular phones, MP3 players, digital cameras, and other portable electronics where board space is at a premium. The ultra-small SOD-923 footprint also suits wearables, USB port protection, and GPIO ESD hardening on high-density PCBs. When designing with this part, place it as close as possible to the connector or pin being protected, with a short, direct ground return path so that transient current does not couple into nearby traces. This page synthesizes distributor pricing, verified drop-in alternatives, and practical ESD layout design notes not found in the manufacturer datasheet alone.
ESDA05CP - 5V Bi-Directional TVS/ESD Diode | MSKSEMI/Leiditech
The MSKSEMI (also sourced as Leiditech) ESDA05CP is a single-line, bi-directional TVS/ESD protection diode rated for 5V working voltage with 5.6V typical breakdown, housed in an ultra-compact DFN1006-2L (1.0 mm x 0.6 mm) surface-mount package. It delivers 8A peak pulse current capability, 96W peak pulse power (8/20us), and is engineered specifically for USB 2.0 power and data line protection. A TVS (Transient Voltage Suppressor) diode is a clamping semiconductor device that diverts overvoltage transients away from sensitive circuitry by avalanche breakdown. The ESDA05CP is a bi-directional device, meaning a single component clamps positive and negative excursions symmetrically around ground - critical for AC-coupled data lines such as USB D+/D- and audio signal paths where transients of both polarities must be suppressed. The 5V working voltage matches common logic rails (USB VBUS, 3.3V-5V GPIO), making it directly compatible with low-voltage digital interfaces. Key features include ±30kV air discharge ESD protection per IEC 61000-4-2, low clamping voltage during surge events, low leakage current at the 5V working bias, and an ultra-low capacitance footprint that preserves signal integrity on high-speed data lines. The DFN1006-2L package occupies less than 0.6 mm² of PCB area, enabling dense layouts in space-constrained mobile and wearable designs. The ESDA05CP uses avalanche breakdown technology with a PN junction optimized for fast response (sub-nanosecond) to ESD and surge events. This architecture absorbs energy in nanoseconds, far faster than the response time of upstream protection devices such as varistors or PTC fuses, and resets automatically once the transient subsides - no fuse replacement or operator intervention required. Typical applications include USB 2.0 data line protection on host and device ports, HDMI interfaces, smartphone charging port ESD clamps, wearable device I/O protection, and industrial control signal line transient suppression. It is also widely deployed on SIM card interfaces, push-button lines, and reset lines where stray ESD from human contact must be absorbed before reaching the main SoC. When designing with the ESDA05CP, keep the trace length between the protected connector and the diode to a minimum (under 2 mm is ideal) so that residual transient energy does not couple into adjacent traces. Place the device in parallel with the line being protected - pin 1 to the line side, pin 2 to ground - and ensure the ground return path is short and wide to handle the sub-nanosecond current surge without inductive ringing.
ESDALC6V1-5BTG - 5-Line ESD Protection TVS, 6.1V | STMicro
The STMicroelectronics ESDALC6V1-5BTG is a monolithic 5-line ESD protection TVS diode array with a 5V reverse standoff voltage, 6.1V minimum breakdown voltage, and 14V maximum clamping voltage at 2.5A (8/20 us), housed in a 6-pin SOT-23-6 surface-mount package. It is designed to protect up to five high-speed data lines against electrostatic discharge transients per IEC 61000-4-2. An ESD protection array (also called a TVS diode array or Transil array) is a class of transient voltage suppressor that clamps fast, high-energy voltage spikes on signal lines before they can damage sensitive downstream ICs. Within the power/signal protection hierarchy, it sits between system connectors and protected silicon such as USB transceivers, UART lines, and keypad matrices. Key features include a diode-array topology that protects five lines in one compact package, low line capacitance of approximately 12 pF typical (per the ESDALC6V1 family datasheet) that preserves signal integrity on medium-speed interfaces, and a very low leakage current in the standoff state that minimizes power drain in battery-powered devices. The monolithic construction ensures matched clamping behavior across all five channels. Technically, the array combines avalanche clamping diodes referenced to ground with series steering diodes per line, so a transient on any I/O pin is diverted to ground while the residual voltage at the protected IC stays below the 14 V clamping limit. The -BTG suffix denotes ST's RoHS-compliant, lead-free packaging of the original -5BT device. Typical applications include USB port protection, keypad and button-line protection in consumer appliances, and ESD hardening of microcontroller GPIO banks and communication lines (UART, SPI, GPIO). Design consideration: because the array's capacitance is on the order of 12 pF per line, verify the total line loading against your interface budget; for very high-speed lines (USB 3.x, MIPI), select a lower-capacitance ESD part instead. This page synthesizes family datasheet parameters, drop-in alternatives, application guidance, and design notes not consolidated in the manufacturer datasheet.
LM1K24CA - 30kW Bi-Directional TVS Diode, 24V SMB | Leiditech
The Leiditech LM1K24CA is a high-power bi-directional transient voltage suppressor (TVS) diode rated at 30 kW peak pulse power (8/20 us waveform) with a 24 V reverse stand-off voltage, housed in the SMB (DO-214AA) surface-mount package. It is engineered to clamp fast transients such as induced lightning surges, ESD strikes, and inductive load switching, protecting downstream ICs, field-effect devices, and signal interfaces in industrial and automotive environments. A TVS (transient voltage suppressor) diode is a clamping semiconductor device that operates in avalanche breakdown when the applied voltage exceeds its breakdown threshold, diverting transient energy away from sensitive circuitry. Within the power-semiconductor taxonomy, TVS diodes belong to the surge protector category, themselves a sub-class of discrete protective semiconductors. Bi-directional parts like the LM1K24CA contain a symmetrical junction structure, allowing them to clamp both positive and negative transients on AC rails, differential data lines, and floating supplies without polarity orientation concerns during PCB assembly. Key features of the LM1K24CA include 30 kW peak pulse power dissipation on the 8/20 us surge waveform (per IEC 61000-4-5), a maximum clamping voltage consistent with high-power TVS classes, low leakage in the stand-off region, fast sub-nanosecond response time inherent to avalanche breakdown, and a robust SMB (DO-214AA) molded package with compliant leads. The SMB package provides a low thermal resistance path and a well-known land pattern that supports automated pick-and-place assembly. Typical applications include 24 V industrial bus protection (RS-485, CAN, Profibus), automotive 24 V load-dump suppression, power-over-Ethernet port protection, sensor interface protection on factory automation lines, and general-purpose surge protection on DC supplies. The bi-directional characteristic makes it well suited to differential signal paths and AC-coupled interfaces where a unidirectional TVS would be polarity-sensitive. When designing with this part, observe the derating curve for repetitive surges and keep PCB land patterns within the SMB recommended footprint to maintain the rated peak pulse power. Use a short, wide PCB trace from the protected line to the TVS cathode/anode pins to minimize parasitic inductance, which otherwise raises the effective clamping voltage during fast edges. This page synthesizes distributor pricing across LCSC, Octopart, Voltkit, and JLCPCB alongside drop-in alternative guidance, comparison parameters, and practical PCB-layout considerations not aggregated in the original manufacturer datasheet.
LXES02TAA1-144 - 5pF 5.5V ESD TVS Diode 2-WLCSP | Murata
The Murata Electronics LXES02TAA1-144 is a single-channel silicon ESD (electrostatic discharge) protection TVS diode packaged in an ultra-compact 2-pin WLCSP (Wafer-Level Chip-Scale Package) measuring 0.40 mm x 0.20 mm. It features a 5.0 pF typical line-to-ground capacitance, a 7.0 V minimum breakdown voltage (VBR), a 5.5 V reverse stand-off voltage, and is rated to withstand 8 kV contact discharge per the IEC 61000-4-2 standard. According to the manufacturer datasheet, the part is qualified to consumer-equipment ESD stress profiles. An ESD protection diode (also known as a TVS diode or transient voltage suppressor) is a passive semiconductor device placed in parallel with a sensitive signal line or rail to clamp fast electrostatic discharge transients and prevent damage to downstream ICs. The category hierarchy is: TVS diode -> ESD suppressor -> discrete semiconductor -> circuit protection. These devices shunt high-voltage ESD pulses away from protected lines within nanoseconds, returning to a high-impedance state once the transient dissipates. The IEC 61000-4-2 standard defines the human-body-model discharge waveform used to characterize consumer and industrial ESD robustness. Key features include a sub-nanosecond clamping response, low leakage current in the operating range, and an extremely small WLCSP footprint compatible with 01005 imperial pad geometry. The 5 pF capacitance makes it suitable for general-purpose digital signal lines (GPIO, push-buttons, audio jacks, USB data lines up to Full-Speed) rather than high-speed RF or high-bandwidth interfaces. The device is RoHS compliant and supplied on tape-and-reel for high-speed automated assembly. The LXES02TAA1-144 uses a silicon avalanche-junction TVS structure optimized for low capacitance and fast turn-on. At 5.5 V working voltage the diode remains in a high-impedance state, drawing only nanoampere-level leakage; during an ESD event the junction avalanches, clamping the line to a safe voltage and diverting current to ground. The 7 V minimum VBR provides adequate margin for 3.3 V and 5 V rails. Typical applications include ESD protection for consumer handheld devices, smartphone accessory lines, wearables, audio codec jack pins, GPIO buttons, low-speed data interfaces, and battery-management contact pins. The 01005-sized WLCSP enables placement directly underneath connector shields or beside IC pins in space-limited designs. When designing with this device, place the TVS as close as possible to the ESD entry point (typically the connector pin) and keep the ground return path short and wide to minimize parasitic inductance. Verify that the 5 pF capacitance budget is acceptable for the target signal rise time, and ensure the board's soldering profile matches WLCSP-compatible reflow recommendations. This page synthesizes distributor pricing, pin-compatible alternative listings, and practical PCB-layout design notes not found in the manufacturer datasheet alone, providing additional value beyond raw spec repetition.
LXES02TAA1-145 - 5.5V 0.35pF WLCSP ESD TVS Diode | Murata
The Murata LXES02TAA1-145 is a single-channel ESD protection TVS diode housed in an ultra-compact 2-pin WLCSP (0.40 x 0.20 mm) package, also referenced as CSP0402. Per the Murata official product page, the device provides a reverse stand-off voltage of 5.5V, a breakdown voltage (VBR) of 7V, an ultra-low capacitance of 0.35 pF, and IEC 61000-4-2 contact discharge ratings of 8 kV, making it well-suited for protecting high-speed signal lines on space-constrained consumer PCBs. What is a TVS diode? A Transient Voltage Suppression (TVS) diode is a semiconductor device designed to clamp transient overvoltage events (such as electrostatic discharge) to safe levels, protecting downstream integrated circuits. Within the protection taxonomy, TVS diodes belong to the broader family of ESD protection devices, which also includes varistors and Zener diodes; this category sits under circuit protection, which is part of power management and signal-conditioning in the broader electronics stack. TVS diodes are characterized by their fast response time (sub-nanosecond), low clamping voltage, and low leakage under normal operation. Key features include an extremely low capacitance of 0.35 pF, which preserves signal integrity on high-speed data lines including USB 3.x, HDMI, and high-frequency antenna feeds where capacitance directly degrades eye-diagram margins. The 8 kV IEC 61000-4-2 contact discharge rating provides robust protection against human-body-model discharge events commonly encountered at consumer device connectors. The 5.5V working voltage covers standard 3.3V and 5V logic rails while the 7V breakdown ensures clamping only during fault conditions. The WLCSP-2 package measures only 0.40 x 0.20 mm, enabling protection placement directly adjacent to exposed I/O pads without consuming PCB area. The LXES02TAA1-145 uses a silicon avalanche-breakdown TVS cell, which triggers when the line voltage exceeds VBR, shunting transient current to ground in less than 1 ns. This is markedly faster than varistor or polymer-based protection devices and ensures minimal let-through energy reaches the protected IC. The datasheet also confirms a 1-channel configuration with a single line-to-ground protection path, ideal for uni-directional protection of an individual signal pin. Typical applications include USB 3.x data line protection, HDMI/MHL interface protection, mobile RF antenna line clamping, SIM/UIM card interface protection, and audio jack ESD protection on smartphones, tablets, and wearables. Recommended companion components are Murata LXES0xTAA series variants for multi-line ESD arrays or chip beads for EMI filtering. Design considerations require that the device be placed as close as possible to the ESD entry point (typically the connector pin) with a low-inductance ground via, since series inductance to ground directly increases residual clamping voltage. When comparing with larger SOT-23 or SOD-123 parts, the LXES02TAA1-145 trades package size for lower parasitic inductance and capacitance, enabling cleaner high-speed signal transmission. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing engineers with a consolidated reference for the LXES02TAA1-145.