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CMHZ5242B-BK-PBFREE - 12V 500mW SOD-123 Zener Diode | Central Semiconductor
The Central Semiconductor Corp CMHZ5242B-BK-PBFREE is a 500 mW surface-mount silicon Zener voltage-regulator diode with a nominal Zener voltage of 12 V (11.4 V to 12.6 V at the 20 mA test current, 5% tolerance) in a 2-pin SOD-123 package. A Zener diode is a special class of voltage-regulator diode engineered to conduct in reverse breakdown at a precisely controlled voltage without damage, making it the simplest building block in the voltage-regulator and voltage-reference hierarchy of power-management components. Unlike rectifier diodes, a Zener maintains a nearly constant reverse voltage across a wide range of reverse current, which allows it to clamp, level-shift, or generate reference rails in any circuit needing a fixed potential. Key specifications of the CMHZ5242B include a dynamic impedance (Zzt) of only 30 ohms at the test current, a low reverse leakage of 1 uA at 9.1 V, and a 500 mW power dissipation rating at 25 C, with operation permitted up to a 150 C junction temperature. The B suffix denotes the tighter 5% voltage tolerance over the base CMHZ series, and the PBFREE designation confirms lead-free, RoHS-aligned construction. The device belongs to the CMHZ5221B Series, which spans 2.4 V through 75 V in the same SOD-123 outline, letting designers scale one qualified footprint across an entire range of clamp and reference voltages. Central Semiconductor manufactures the series specifically for industrial, commercial, entertainment and computer applications per the manufacturer datasheet. Typical applications include 12 V rail clamping on industrial inputs, low-current shunt references for op-amp bias, protection of MOSFET gates against overvoltage, and start-up bias supplies in AC-DC converters. Design-wise, derate the 500 mW rating linearly above 25 C and size the series resistor so worst-case current keeps dissipation within limits; the 30 ohm dynamic impedance means regulation quality depends on a healthy bias current. This page adds distributor pricing tiers, drop-in alternatives, and practical design notes that the bare manufacturer datasheet does not provide.
CMHZ5242B-TR-PBFREE - 12V 500mW Zener Diode SOD-123 | Central Semiconductor
The Central Semiconductor CMHZ5242B-TR-PBFREE is a 12 V silicon Zener diode voltage regulator rated for 500 mW power dissipation with a +/-5% tolerance, supplied in a surface mount SOD-123 package on tape and reel. A Zener diode is a diode type engineered to operate in reverse breakdown, where it maintains a nearly constant voltage across its terminals over a wide range of currents. Within the power management hierarchy, it functions as a shunt voltage regulator, a voltage reference, and a clamp or protection element, sitting alongside linear regulators and switching converters in the broader family of voltage regulation solutions. Key features include a nominal Zener voltage of 12 V with an 11.4 V to 12.6 V tolerance window, a specified test current of 20 mA, and a low dynamic impedance of 30 ohms that keeps regulation tight under varying load. Reverse leakage is just 1 uA at 9.1 V, and the device is rated for operation up to 150 C, giving substantial thermal headroom for industrial environments. The PBFREE suffix confirms lead-free, RoHS-oriented construction. The CMHZ5221B Series from Central Semiconductor is manufactured as a high quality surface mount voltage regulator designed for industrial, commercial, entertainment, and computer applications. The silicon planar construction delivers stable breakdown characteristics, and the small SOD-123 outline minimizes board area while supporting automated pick-and-place assembly. Typical applications include 12 V rail clamping and transient suppression, low-current shunt regulation for microcontroller and sensor bias rails, voltage reference generation for comparators, and protection of inputs on industrial and computer equipment. Its 500 mW rating covers most logic-level clamp duties without a heatsink. Design consideration: derate power dissipation above 50 C ambient and size the series resistor so that worst-case input voltage with an open load does not exceed the 500 mW rating; at 12 V this limits continuous Zener current to roughly 40 mA. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CMHZ5242B-TR-TIN - 12V 500mW SOD-123 Zener Diode | Central Semiconductor
The Central Semiconductor CMHZ5242B-TR-TIN is a 500 mW surface-mount silicon Zener voltage-regulator diode with a nominal Zener voltage of 12 V (11.4 V to 12.6 V at the 20 mA test current, +/-5% tolerance), supplied in the industry-standard SOD-123 small-outline package with tin/lead (TIN/LEAD) plating on tape and reel. The CMHZ5221B Series is designed for voltage regulation, clamping, and reference functions in industrial, commercial, entertainment, and computer applications. A Zener diode is a silicon diode operated in reverse breakdown: above the Zener voltage it conducts while holding the voltage across its terminals nearly constant, making it a simple two-terminal voltage regulator. In the power-management hierarchy, a Zener sits at the simplest end of voltage regulators - before shunt references and LDO linear regulators - and is widely used for bias generation, transient clamping, and low-cost reference levels. Key features of the CMHZ5242B include a 12 V nominal breakdown, a 500 mW power dissipation rating, a 5% voltage tolerance (B-suffix), and a compact SOD-123 footprint compatible with high-density surface-mount assembly. The tin/lead finish supports traditional soldering processes where lead-bearing finishes remain permitted; for RoHS-focused builds, Central offers the otherwise-identical CMHZ5242B TR PBFREE variant. According to the manufacturer datasheet, the CMHZ5221B Series is manufactured as a high-quality voltage regulator in a surface-mount package, and the CMHZ5242B is rated 12 V at 500 mW in the SOD-123 case. Typical applications include 12 V rail clamping, input overvoltage protection for microcontroller GPIO lines, supply-rail bias generation, and consumer/computer board-level voltage reference duties where a discrete two-terminal solution is preferred over an IC reference. Design consideration: the 500 mW rating applies only with adequate PCB copper to keep junction temperature within limits - derate power as ambient temperature rises, and always verify the tolerance band (11.4 V to 12.6 V) against the protection threshold of the circuit being clamped. This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet, as of 2026-09-14.
CMPP6027R - 40V 150mA Programmable UJT SOT-23 | Central Semiconductor
The Central Semiconductor CMPP6027R is a surface mount silicon programmable unijunction transistor (PUT) rated for 40V anode-to-cathode voltage and 150mA peak output current, housed in a SOT-23 (TO-236-3 / SC-59 / SOT-23-3) package with 167 mW power dissipation. Its trip parameters - peak current (IP), valley current (IV), and intrinsic standoff ratio (eta) - are programmable through an external resistor divider on the gate. A programmable unijunction transistor (PUT) is a four-layer PNPN threshold switching device whose anode-gate-cathode terminals resemble a small thyristor. Unlike a fixed-ratio UJT, a PUT fires when the anode voltage exceeds the gate voltage plus one PN junction drop, and because the gate is externally accessible, designers set the trigger threshold, peak current, valley current, and standoff ratio with two resistors. PUTs therefore occupy the same functional niche as neon lamps and Schmitt triggers in low-frequency relaxation oscillators, timing circuits, and voltage-detection latches within the broader thyristor and semiconductor family. Key differentiating features of the CMPP6027R include its 40V anode-cathode rating for headroom on industrial rails, 150mA pulse output capability sufficient to drive optocoupler LEDs or thyristor gates directly, fully adjustable IP and IV characteristics, and the compact SOT-23 surface mount footprint that lets designers retrofit through-hole PUT designs such as the 2N6027 into modern PCBs. The device complements Central Semiconductor's CMPP6028R, which offers a different intrinsic standoff ratio binning within the same package. Architecturally, the CMPP6027R is an anode-gate thyristor: forward biasing the anode-gate junction injects gate current, regeneratively turns on the PNPN structure, and latches the anode-cathode path into conduction until the anode current falls below the programmable valley current. This negative-resistance switching behavior is the basis of its use in relaxation oscillators and level-sensitive triggers. Typical applications include sawtooth and pulse relaxation oscillators, time-delay timers, thyristor and triac gate triggering, overvoltage crowbar sensing, and voltage-monitoring alarm circuits where a precise, adjustable threshold is required at minimal BOM cost. Design consideration: because IP, IV, and eta are set by the external R1-R2 gate divider, resistor tolerance directly shifts the trip point; use 1% resistors and confirm the divider current comfortably exceeds the datasheet peak current at the lowest operating temperature. This page adds value beyond the datasheet by consolidating distributor availability, drop-in alternative analysis, application guidance, and pricing context for the CMPP6027R in one reference.
CMPP6028R - 40V, 150mA Programmable UJT, SOT-23 | Central Semiconductor
The Central Semiconductor CMPP6028R is a silicon programmable unijunction transistor (PUT) rated at 40 V and 150 mA, housed in a surface-mount SOT-23 package. Unlike a conventional unijunction transistor, a PUT allows designers to program key characteristics - valley current (IV), peak current (IP), and the intrinsic standoff ratio (eta) - through two external resistors. A programmable unijunction transistor is a four-layer PNPN device belonging to the thyristor family. It behaves as a voltage-triggered switch: when the anode voltage exceeds a threshold set by the gate divider network, the device fires and conducts from anode to cathode. PUTs are widely used as relaxation oscillators, timing circuits, voltage detectors, and SCR trigger devices, occupying the low-power end of the power-management and discrete-semiconductor hierarchy. Key features of the CMPP6028R include a 40 V anode-to-cathode voltage rating, a 150 mA maximum current capability, and a compact SOT-23 surface-mount package suitable for automated assembly. The programmability of IP, IV, and eta gives it flexibility that fixed-parameter UJTs cannot offer, allowing one part number to serve many oscillator and timing designs. Architecturally, the CMPP6028R implements the anode-gate-cathode structure of a PUT with the gate accessible on a package pin. The intrinsic standoff ratio and peak/valley currents are set externally: increasing the gate divider resistance raises the standoff ratio and reduces peak current, tuning oscillator frequency and triggering thresholds. Maximum power dissipation for this family is 167 mW per the manufacturer data. Typical applications include relaxation oscillators, long-duration timers, overvoltage detectors, lamp flashers, and gate-trigger circuits for SCRs and triacs in low-power industrial and consumer designs. Design consideration: keep total dissipation within the 167 mW package limit and ensure the external divider current substantially exceeds the valley current so oscillation does not stall. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CMPZ4621 TR - 3.6V 350mW Low Noise Zener Diode | Central Semiconductor
The Central Semiconductor CMPZ4621 TR is a 3.6V, 350 mW surface mount low-noise silicon Zener diode in a SOT-23 package, with a ±5% voltage tolerance and a specified Zener impedance of 1700 ohm at the test current of 75 mA. A Zener diode is a voltage reference or clamp device that conducts in reverse breakdown at a precisely defined voltage. In the system hierarchy, it belongs to the discrete diode family, sitting below linear voltage regulators and voltage reference ICs: where a regulator uses a reference plus feedback loop, a Zener provides a fixed, simple breakdown voltage directly. Low-noise Zener families like the CMPZ4621 are specifically processed for reduced avalanche noise, which matters when the breakdown voltage feeds a comparator, ADC reference, or bias point. Key features of the CMPZ4621 include a 3.6V nominal Zener voltage with 5% tolerance, 350 mW power dissipation, low reverse breakdown noise for clean biasing, and a compact SOT-23 surface mount footprint compatible with standard reflow assembly. The PBFREE suffix indicates a lead-free, RoHS-oriented build. The 1700 ohm dynamic impedance at 75 mA test current defines how much the clamp voltage moves with current, so designs should bias the diode well above the knee for best regulation. Technically, the device uses a silicon avalanche/planar construction optimized by Central Semiconductor for low noise operation. Avalanche noise scales with breakdown voltage and current; the CMPZ4621's 3.6V rating sits near the low end where noise is naturally modest, and the low-noise process further reduces it versus standard Zeners. Typical applications include voltage clamping on signal lines, low-current voltage references, bias networks for transistor amplifiers, and protection in portable and consumer electronics where the SOT-23 footprint and low cost are advantageous. Design tip: derate the 350 mW rating above 25C ambient and ensure series current limiting keeps worst-case power below the derated curve. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CMPZDC15V BK - 15V 350mW Dual Zener SOT-23 | Central Semiconductor
The Central Semiconductor CMPZDC15V BK is a dual common-cathode silicon Zener diode rated at 15V nominal Zener voltage and 350mW total power dissipation, housed in a surface-mount SOT-23 (TO-236AB) package. Each Zener element exhibits a nominal VZ of 15V with a tolerance window of 13.8V to 15.6V at the test current, and a maximum reverse current IZM of 11mA. A dual Zener diode integrates two Zener junctions sharing a common terminal in a single three-pin package. In the common-cathode configuration, the shared cathode is tied to one pin while the two anodes form independent inputs, allowing bidirectional voltage clamping of a single node relative to two independent signal or supply lines. Dual Zeners occupy the same PCB footprint as a single transistor, making them a space-efficient sub-circuit within the broader diode and voltage-regulation hierarchy of discrete semiconductors. Key features include the 350mW power dissipation rating, a tightly bounded 13.8V to 15.6V Zener window, and surface-mount construction compatible with automated pick-and-place assembly. The marking code CCY4 allows visual identification on the reel. The device is specified across the CMPZDC2V4 series range of 2.4V through 47V, letting engineers hold a single qualified footprint while scaling clamp voltage. Technologically, the part uses a silicon planar Zener junction optimized for stable regulation and repeatable clamping behavior in industrial and commercial environments. Per the manufacturer, the CMPZDC2V4 series is described as a high-quality voltage regulator for industrial, commercial, entertainment and computer applications. Typical applications include input protection clamps on data and control lines, voltage reference nodes for comparators and ADC thresholds, bias stabilization in analog front ends, and overvoltage protection in consumer entertainment and computer equipment. A key design consideration is that the two Zener elements share one package's thermal budget: simultaneous conduction halves the per-junction power allocation, and derating must respect the 350mW package limit. This page synthesizes datasheet parameters, same-series drop-in alternatives, and practical design notes not found in the raw manufacturer listing.
CMPZDC15V TR - 15V 350mW Dual Common Cathode Zener | Central Semiconductor
The Central Semiconductor CMPZDC15V TR is a 15V, 350 mW dual silicon Zener diode in a common cathode configuration, supplied in tape-and-reel packaging for surface mount assembly. Per the manufacturer datasheet, the zener voltage window at the 11 mA test current is 13.8V to 15.6V, and the device belongs to the CMPZDC2V4 through CMPZDC47V series spanning 2.4V to 47V. A Zener diode is a voltage regulator diode that conducts in reverse breakdown at a precisely defined voltage, holding that voltage across its terminals over a wide range of reverse current. Placing two Zener junctions in a dual, common cathode package lets one three-terminal SOT-23 footprint clamp or regulate two independent nodes, or serve both polarities of a symmetric clamp, saving board area versus two discrete diodes. Key features include the dual common cathode topology, a 350 mW total power dissipation rating, a nominal 15V zener voltage with a 13.8V to 15.6V specification window, and an 11 mA zener test current (IZT) as the reference point for the stated tolerance. The lead-free PBFREE variant (CMPZDC15V TR PBFREE) is listed by Mouser for RoHS-driven designs. The device is fabricated as a silicon planar Zener structure, and its marked part is identified by the marking code CCY4. Because both junctions share a single cathode terminal, thermal coupling between the two diodes is good, giving similar breakdown behavior across both elements. Typical applications include voltage clamping on signal and power nodes in industrial, commercial, entertainment, and computer equipment, as well as bias stabilization and low-current shunt regulation. Designers should size series resistance so that worst-case zener current keeps total dissipation under 350 mW, and verify tolerance budgeting against the 13.8V to 15.6V window rather than the nominal 15V. This page synthesizes distributor inventory data, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.
CMUDM8004 - 30V 450mA P-Ch SOT-523 MOSFET | Central Semiconductor
The Central Semiconductor CMUDM8004 is a surface mount P-channel enhancement-mode silicon MOSFET rated for 30 V drain-source voltage, 450 mA continuous drain current, and 250 mW power dissipation, housed in the compact SOT-523 (SC-75 style) package. It is manufactured using the P-channel DMOS process and is designed for high-speed pulsed amplifier and driver applications. A MOSFET (metal-oxide-semiconductor field-effect transistor) is a voltage-controlled semiconductor switch and amplifier element that sits at the heart of modern power management. Within the component hierarchy, the CMUDM8004 belongs to the discrete small-signal MOSFET family: transistor -> field-effect transistor (FET) -> MOSFET -> P-channel enhancement-mode small-signal MOSFET. Enhancement-mode P-channel devices turn on when the gate is driven below the source, which simplifies high-side switch topologies. Key features of the CMUDM8004 include low on-state resistance (low rDS(on)), a low threshold voltage that makes the device logic-level compatible, halogen-free construction by design, and a very small SOT-523 surface mount footprint for dense PCB layouts. The datasheet also identifies a complementary N-channel MOSFET, the CMUDM7004, enabling push-pull and half-bridge style driver stages from a matched pair. Technically, the DMOS process provides a short, vertical channel structure that yields fast switching transitions, low gate charge behavior for a small-signal part, and stable threshold characteristics. The P-channel polarity allows direct high-side switching without a floating gate driver in low-voltage rails, which is a common simplification in portable and battery-powered electronics. Typical applications cited in the manufacturer datasheet include load and power switches and power supply converter circuits. The device is also suited to high-side load switching in battery-powered portable equipment, level-shifted driver stages, and pulsed amplifier circuits where fast rise and fall times are required within the 450 mA current envelope. When designing with this part, verify the gate drive level against the low threshold voltage specification to guarantee full enhancement at the lowest supply rail, and observe the 250 mW dissipation limit to stay within safe operating temperature. This page synthesizes distributor pricing and availability data, complementary part information, and practical design notes not found in the manufacturer datasheet alone.
CMUDM8004-TR-PBFREE - 30V 450mA P-Channel MOSFET | Central Semiconductor
The Central Semiconductor CMUDM8004-TR-PBFREE is a P-channel enhancement-mode silicon MOSFET rated for 30 V drain-source voltage and 450 mA continuous drain current at 25 C ambient, with 250 mW power dissipation, housed in a compact 3-pin SOT-523 surface-mount package. It is a lead-free (PBFREE) small-signal power transistor intended for low-side and high-side switching in space-constrained designs. A P-channel enhancement-mode MOSFET is a voltage-controlled semiconductor switch that conducts when the gate-source voltage is pulled below the source potential by at least the threshold voltage. Within the power management hierarchy, small-signal MOSFETs such as this device sit between discrete bipolar junction transistors and larger power MOSFETs, offering voltage-driven, essentially gate-current-free switching for load-switch and power-path control functions. Key differentiating features include a low threshold voltage, which allows direct drive from low-voltage logic and microcontroller GPIO outputs without level-shifting circuitry, and the P-channel polarity, which simplifies high-side load switching because the gate can be pulled to ground to turn the device on, with the source tied to the positive supply rail. The 30 V rating comfortably covers 5 V, 12 V, and 24 V rail systems. Fabricated as an enhancement-mode silicon MOSFET, the device provides normally-off behavior: with zero gate-source bias it blocks current, a fail-safe characteristic preferred over depletion-mode devices in power switching. The small SOT-523 footprint minimizes board area for high-density portable and battery-powered designs, while the PBFREE suffix confirms lead-free, RoHS-aligned construction for global compliance. Typical applications named in the manufacturer datasheet are load and power switches and power supply converter circuits, where the device serves as a high-side switch, reverse-polarity protection element, or power-path controller in portable electronics, battery-powered equipment, and small DC-DC converter stages. A key design consideration: because the package dissipates only 250 mW at 25 C ambient, verify that I-squared-R conduction losses plus switching losses remain within this limit across the full temperature range, derating as ambient temperature rises. This page synthesizes distributor pricing, availability, and datasheet-derived design guidance for the CMUDM8004-TR-PBFREE in one place, adding cross-reference and selection context beyond the raw manufacturer datasheet.
CPM3-10000-0300A - 10kV/305mΩ SiC Bare Die MOSFET | Wolfspeed
The Wolfspeed CPM3-10000-0300A is a 10 kV (10,000 V) N-channel silicon carbide (SiC) power MOSFET supplied as a Bare Die, featuring a typical on-state resistance (RDS(on)) of 305 mΩ at 20 A and engineered around Wolfspeed's third-generation C3M SiC MOSFET technology. It is rated for 20 A continuous drain current and 10000 V drain-to-source breakdown voltage in an industrial-grade, die-only form factor suitable for direct die attach. What is a SiC MOSFET? A silicon carbide MOSFET (SiC MOSFET) is a wide-bandgap power transistor that switches much faster and sustains higher blocking voltages than silicon MOSFETs or IGBTs, with lower switching losses and higher thermal tolerance. Within the power-semiconductor taxonomy, the CPM3-10000-0300A sits as: SiC MOSFET → power MOSFET → discrete semiconductor → power management. The 10 kV class eliminates multi-level converter stages in medium-voltage applications. Key features include a 305 mΩ typical RDS(on) at 20 A, 10000 V drain-source voltage rating, and 20 A continuous drain current. The device supports gate threshold voltage of approximately 2.8 V (per third-party benchmark) and offers AEC-Q100-style industrial qualification suitable for traction, grid-tie, and industrial motor drive environments. The bare-die format allows hybrid module integration with minimum parasitic inductance. The C3M third-generation SiC process enables a thinner drift layer and superior switching figure of merit (RDS(on) × Qg) compared to the prior generation. The 8.1 × 8.1 mm² die footprint is consistent with the companion QPM3-10000-0300A qualification sample, easing dual-sourcing of engineering samples. Typical applications include medium-voltage motor drives (3.3 kV/6.9 kV class), solid-state transformer (SST) primary bridges, traction auxiliary converters, grid-tie photovoltaic inverters above 1500 V DC, and pulsed-power / high-voltage DC transmission. The bare die form factor targets hybrid power module assemblies where minimum loop inductance is critical. Designers should evaluate thermal-stack design (DBC substrate, sintered or soldered attach) and gate-driver placement within millimeters of the die to limit parasitic inductance. Pairing this device with a compatible isolated gate driver (e.g., ±20 V capable, 15-25 V recommended) is required to remain within the datasheet SOA. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the bare-die datasheet alone.
CS223-4M - 4A 600V Surface Mount SCR | Central Semiconductor
The Central Semiconductor CS223-4M is a 4 A surface mount silicon controlled rectifier (SCR) rated at 600 V blocking voltage, housed in the SOT-223 (TO-261AA) epoxy molded package. According to the manufacturer datasheet, the CS223 family covers 600 V through 800 V grades in a 4.0 A rating, and the CS223-4M is specifically the 600 V member of that family. An SCR, or silicon controlled rectifier, is a three-terminal thyristor that acts as a latching switch: once a small gate trigger current is applied between gate and cathode, the device conducts from anode to cathode and remains on until the anode current falls below the holding current. In the power-electronics hierarchy, the SCR sits among thyristors alongside TRIACs and DIACs, and is the workhorse of half-wave and full-wave controlled rectification, crowbar overvoltage protection, and phase-control circuits. Key features of the CS223-4M include a 4.0 A average on-state current rating, 600 V repetitive peak off-state voltage, a compact surface mount SOT-223 case with a thermally conductive tab, and epoxy molded construction designed for sensing circuit applications and control systems. The SOT-223 tab (which is electrically common to the anode) provides a low-resistance thermal path to the PCB copper, allowing several watts of dissipation without an external heatsink. The device uses standard-recovery silicon thyristor technology optimized for line-frequency (50/60 Hz) applications rather than high-frequency switching. Its latching behavior makes it well suited to crowbar circuits that dump fault energy into a shunt path, overvoltage sensing, and gating of loads driven from rectified AC mains. Typical applications include AC power control, overvoltage crowbar protection in linear power supplies, sensing and alarm latch circuits, and industrial control systems where a robust, low-cost latching switch is required. When designing with this SCR, ensure the gate trigger current is available under worst-case cold-temperature conditions, and verify that latching current is reached before the trigger pulse ends; a snubber across anode-cathode suppresses dv/dt false triggering. This page synthesizes distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
CS223-4M-TR-PBFREE - 600V 4A SOT-223 SCR | Central Semiconductor
The Central Semiconductor CS223-4M-TR-PBFREE is a 600V, 4A (RMS) surface mount silicon controlled rectifier (SCR) rated for 30A surge current, housed in a 4-pin (3+tab) SOT-223 epoxy-molded package supplied on tape and reel. It is a lead-free, Pb-free device designed for sensing circuit applications and control systems. An SCR (silicon controlled rectifier), also called a thyristor, is a four-layer semiconductor device that acts as a latching switch: once triggered by a small gate current, it conducts from anode to cathode until the current falls below the holding level. Within the power-semiconductor hierarchy, the thyristor family sits alongside MOSFETs and IGBTs as a power switching device, and SCRs remain the preferred solution for AC line-controlled latching functions due to their ruggedness and low conduction loss. Key features of the CS223-4M include a 600V off-state voltage rating, a maximum gate trigger voltage (Vgt) of 800 mV, and a very sensitive maximum gate trigger current (Igt) of 200 uA. This high gate sensitivity allows direct driving from low-power sensing circuits, microcontroller ports, or optocoupler outputs without an external gate driver stage, reducing bill-of-material cost and board area. The epoxy-molded SOT-223 construction provides good thermal performance for a compact surface-mount footprint; the tab (pin 4) is electrically part of the anode path and solders to the PCB copper area for heat spreading. The device is a standard-recovery SCR, suited to 50/60 Hz line-frequency phase control and crowbar circuits rather than high-frequency switching. Typical applications include overvoltage crowbar protection in power supplies, AC line latching control, sensing and alarm trip circuits, and industrial control systems where a small signal must latch a larger load current. Design consideration: because the gate is highly sensitive (200 uA max Igt), keep the gate trace short and add a gate-to-cathode resistor (typically 1k ohm) to prevent false triggering from leakage or noise pickup. This page synthesizes distributor availability data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
CSD13302W - 12V N-Channel NexFET MOSFET | Texas Instruments
The Texas Instruments CSD13302W is a 12V N-channel NexFET power MOSFET in a 1mm x 1mm wafer-level package (WLP), designed for space-constrained applications requiring low on-resistance and gate charge. It delivers a maximum continuous drain current of 1.6A at 25°C ambient and features an ultra-low on-resistance of 14.6mΩ (typical) at VGS=4.5V, making it ideal for load switching, battery protection, and power management in portable electronics. A power MOSFET is a type of field-effect transistor optimized for switching and amplification of power. It operates by controlling the conductivity between drain and source terminals via an insulated gate voltage. The CSD13302W is an enhancement-mode N-channel device, meaning it requires a positive gate-to-source voltage to conduct. As a discrete semiconductor, it belongs to the MOSFET family, which is a subset of transistors, which are fundamental building blocks in electronic circuits. Key features of the CSD13302W include a low gate charge (Qg) of 4.1nC at VGS=4.5V, which enables fast switching and reduces driver losses. The device also offers excellent thermal performance with a power dissipation of 1.8W at 25°C ambient, and it is RoHS compliant and lead-free. The 4-DSBGA (1x1) package provides a compact footprint with a height of only 0.4mm, suitable for ultra-thin designs. Technically, the CSD13302W utilizes TI's NexFET technology, which optimizes the MOSFET structure to achieve low on-resistance and gate charge simultaneously. This results in a figure of merit (RDS(on) x Qg) that is competitive in its class. The device is designed for low-voltage applications up to 12V, with a maximum gate-source voltage rating of ±8V. It also features an integrated ESD protection diode, enhancing robustness in handling. Typical applications include load switches in smartphones, tablets, and wearables, where the small package and low on-resistance minimize power loss and PCB area. It is also used in battery management systems for overcurrent protection and in DC-DC converter synchronous rectification stages. The low threshold voltage (VGS(th) of 0.9V) allows direct driving from low-voltage logic. When designing with the CSD13302W, ensure that the gate drive voltage is sufficient to fully enhance the channel (recommended VGS=4.5V) to achieve the lowest on-resistance. Also, consider the thermal path: the WLP package relies on the PCB copper for heat spreading, so adequate thermal vias and copper area are necessary for high-current operation.
CSD15571Q2 - 20V N-Channel NexFET MOSFET | Texas Instruments
The CSD15571Q2 is a 20-V N-channel NexFET power MOSFET from Texas Instruments, housed in a compact 6-pin WSON (DQK) package measuring 2 mm x 2 mm. It features a low on-resistance of 19.2 mΩ and supports a continuous drain current of 22 A at 25°C, making it suitable for high-density power management applications. A power MOSFET is a type of field-effect transistor designed to handle significant power levels. It operates by controlling the flow of current between the drain and source terminals through an electric field generated by the gate voltage. Power MOSFETs are essential components in switching power supplies, load switches, and battery protection circuits, where efficient switching and low conduction losses are critical. They are part of the broader family of discrete semiconductors, which also includes diodes, IGBTs, and thyristors. Key features of the CSD15571Q2 include a low gate charge (Qg) for fast switching, a low thermal resistance enabling efficient heat dissipation, and a compact footprint that saves board space. The device is RoHS compliant and lead-free, meeting environmental standards. Its 20-V drain-source voltage rating and 22-A current capability make it ideal for low-voltage, high-current applications. Technically, the CSD15571Q2 utilizes TI's NexFET technology, which optimizes the MOSFET structure to achieve low on-resistance and reduced switching losses. The device has a maximum power dissipation of 2.5 W at 25°C, and its thermal performance is enhanced by the exposed pad in the WSON package. The gate threshold voltage is typically 1.1 V, allowing logic-level drive. Typical applications include load switching in portable devices, DC-DC converter synchronous rectification, battery protection circuits, and power distribution in industrial systems. The low on-resistance minimizes conduction losses, while the small package enables compact designs. When designing with this MOSFET, ensure adequate gate drive voltage to fully enhance the channel and minimize on-resistance. Also, consider the thermal path: the exposed pad should be soldered to a copper area for effective heat sinking, especially at high currents.
CSD17303Q5 - 30V N-Ch NexFET MOSFET 2.6mOhm | TI
The Texas Instruments CSD17303Q5 is a 30V N-channel NexFET power MOSFET in the 8-pin VSON-CLIP (DQH) package measuring 5 mm x 6 mm. It delivers up to 32A at 25C ambient (100A at case temperature) with an ultra-low on-resistance of 2.6 mOhm and 3.2W power dissipation at Ta. A power MOSFET is a voltage-controlled semiconductor switch used in the power management hierarchy above gate drivers and below controllers in DC-DC conversion systems. The CSD17303Q5 belongs to TI's NexFET family of optimized MOSFETs for high-efficiency switching power supplies. Key features include optimization for 5V gate drive, ultra-low total gate charge (Qg) and gate-drain charge (Qgd) for fast, efficient switching, avalanche rating for ruggedness, and low thermal resistance enabled by the VSON-CLIP package with exposed clip-bonded pad. The Pb-free terminal plating is RoHS compliant and halogen free per TI datasheet. The NexFET silicon process achieves a superior figure of merit (Rds(on) x Qg), reducing both conduction and switching losses. In synchronous buck converters the CSD17303Q5 is typically used as the control FET, where low Qgd minimizes switching transition losses, while its 2.6 mOhm Rds(on) keeps conduction losses low at high output currents. The 30V rating suits 12V and intermediate bus inputs with margin for transients. Typical applications include notebook point-of-load converters and synchronous buck stages in networking, telecom, and computing systems. The -55C to +150C operating range supports demanding industrial environments. Design tip: verify Vgs derating when driving below 5V, since Rds(on) rises at reduced gate voltage, and maximize copper area on the drain pad to exploit the low thermal resistance of the VSON-CLIP package. As of 2026-08-30, pricing starts around $2.09 at LCSC.
CSD17484F4 - 30V N-Ch FemtoFET MOSFET 3A | Texas Instruments
The Texas Instruments CSD17484F4 is a 30V N-channel NexFET power MOSFET in the ultra-small 3-PICOSTAR (1.0 mm x 0.6 mm) LGA package. Built on TI FemtoFET technology, it delivers 99 mOhm typical on-resistance (128 mOhm max) and up to 3A continuous drain current with 500 mW power dissipation, specifically optimized to minimize footprint in handheld and mobile applications. A power MOSFET is a three-terminal voltage-controlled semiconductor switch used to regulate or switch power in electronic systems. Within the hierarchy of power management components - power management IC to discrete power transistor to small-signal MOSFET - the FemtoFET family occupies the small-signal segment, replacing standard small-signal MOSFETs while providing at least a 60% reduction in footprint size. Key features include the 30V drain-to-source rating suitable for single-cell and multi-cell battery stacks, low gate charge for fast switching with limited drive current, a low gate threshold voltage for 1.8V-2.5V logic-compatible drive, and integrated gate ESD protection that improves assembly robustness on automated SMT lines. The NexFET process technology balances RDS(on) against gate charge, achieving low conduction loss at modest loads while keeping total switching energy low. Because the PICOSTAR LGA package has extremely small thermal mass, PCB copper area is the primary thermal path and must be designed accordingly. Typical applications include smartphone and tablet load switches, portable battery-powered devices, wearable electronics, and low-side switching in compact industrial sensor nodes where board area is the dominant constraint. Design tip: at only 1.0 x 0.6 mm, the land pattern and stencil design directly determine both solderability and RDS(on) performance - follow the TI datasheet (SLPS550) layout recommendations exactly, and verify thermal dissipation with copper pour area rather than assuming package ratings alone.
CSD18503Q5A - 40V N-Channel NexFET MOSFET 4.3mOhm | Texas Instruments
The Texas Instruments CSD18503Q5A is a 40-V N-channel NexFET power MOSFET in a single 5 mm x 6 mm SON (VSONP, DQJ) 8-pin surface-mount package, specified at 4.3 mOhm on-resistance (3.4 mOhm typical per the TI datasheet description). It is designed to minimize losses in power conversion applications, supporting 19 A continuous current at 25C ambient (100 A case rating) with 3.1 W (Ta) and 120 W (Tc) power dissipation ratings. A power MOSFET is a voltage-controlled semiconductor switch used in the power stage of converters, motor drives, and load-switch circuits; within the hierarchy of power management semiconductors, it sits alongside IGBTs and analog controllers as a core switching element. The NexFET process technology from TI optimizes the RDS(on) x gate-charge figure of merit, reducing both conduction and switching losses versus older trench MOSFET generations. Key differentiating specifications include the low 4.3 mOhm RDS(on) at 10 V gate drive, a 40 V drain-source rating suitable for 12 V and 24 V input bus systems, the low-profile 5x6 mm SON package with exposed drain pad for low thermal resistance, and an operating junction range of -55C to +150C. The SON footprint also provides excellent PCB thermal spreading through the large exposed drain pad. Typical applications include DC-DC converter power stages, synchronous rectification, motor drive half-bridges, and hot-swap or ORing load switches. In these circuits, the low RDS(on) directly reduces conduction losses and heat-sinking requirements, while the NexFET cell structure keeps switching losses low at high frequency. Design consideration: with 4.3 mOhm on-resistance, conduction loss at high current (e.g., 50 A at 50C junction gives roughly 13.5 W) dominates, so thermal design and copper pour area determine usable current more than the 100 A package case limit. Verify SOA limits for pulsed loads per the TI datasheet (CSD18503Q5A datasheet, TI).
CSD19534Q5A - 100V NexFET N-Channel MOSFET | Texas Instruments
The Texas Instruments CSD19534Q5A is a 100 V N-channel NexFET power MOSFET housed in an 8-VSONP (5x6 mm) package, featuring an ultra-low on-resistance of 12.6 mΩ (per TI datasheet description) designed to minimize conduction and switching losses in power conversion applications. The device is rated for 44 A continuous drain current at Tc and supports 3.2 W power dissipation on the standard test board (Ta) and 63 W at Tc, with a VDS of 100 V. As a single N-channel enhancement-mode MOSFET, it uses TI's NexFET technology platform to deliver low Figure-of-Merit (FOM) for high-frequency switching. A power MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a voltage-controlled semiconductor switch used for switching and amplifying electronic signals in power electronics. Within the taxonomy hierarchy, MOSFETs belong to transistors -> discrete semiconductors -> semiconductors. The CSD19534Q5A is specifically an N-channel enhancement-mode power MOSFET in the NexFET family, optimized for synchronous rectification, DC-DC conversion, and motor drive applications where low RDS(on) and high current handling are critical. Key specifications include a 12.6 mΩ maximum RDS(on) at VGS = 10 V (per TI datasheet description), 100 V VDS breakdown, and a SON 5 mm x 6 mm package with an exposed pad (VSONP) that provides low thermal resistance for efficient heat dissipation. The gate threshold voltage is in the standard 1-3 V range typical for logic-level NexFET devices. The device is rated for an operating temperature range supporting industrial and automotive environments. The integrated drain-connected exposed pad enables direct PCB thermal coupling. Typical applications include primary-side switching in telecom and server DC-DC converters, secondary-side synchronous rectification in buck topologies, motor drive H-bridges in industrial robotics and e-mobility, battery protection circuits, hot-swap controllers, and load management systems in 48 V distributed power architectures. The 100 V rating provides significant headroom above nominal 48 V rails, allowing safe operation during transient spikes and inductive flyback events. When designing with this MOSFET, ensure that the gate driver can source/sink sufficient peak current (typically 1-2 A) to charge the gate capacitance quickly and minimize switching losses. Place the gate drive loop as compact as possible, with the gate resistor placed close to the gate pin to suppress parasitic ringing and prevent unintended turn-on due to Miller effect. The exposed pad must be soldered to a sufficient copper area to achieve rated thermal performance.
CSD22206W - -8V P-Ch 5A WLP MOSFET | Texas Instruments
The Texas Instruments CSD22206W is a -8V P-channel NexFET power MOSFET in an ultra-small 9-ball DSBGA (WLP) package measuring just 1.5 mm x 1.5 mm. It delivers up to 5A of continuous current (Ta) with an on-resistance of 5.7 mOhm (typ 4.7 mOhm at higher VGS) and a power dissipation of 1.7W (Ta), integrating gate ESD protection for robust handling. A power MOSFET is a voltage-controlled semiconductor switch used to regulate or switch electrical power in a circuit. Within the power management hierarchy, discrete MOSFETs sit below integrated power stages and above gate drivers as the final switching element in load switches, DC-DC converters, and battery-protection circuits. The NexFET family from TI is optimized for the lowest on-resistance and gate charge in the smallest possible outline. Key features include the 1.5 mm x 1.5 mm WLP footprint, which minimizes board area in space-constrained designs; low RDS(on) of 4.7-5.7 mOhm, which reduces conduction losses and heat generation; integrated gate ESD protection, improving assembly reliability; and excellent thermal characteristics enabled by the wafer-level chip-scale package with solder balls acting directly as thermal paths. The NexFET silicon technology balances cell density and ruggedness, achieving very low on resistance and gate charge simultaneously. The ultra-low profile of the DSBGA package suits stacked-board and wearable form factors where height is restricted. The P-channel polarity simplifies high-side load-switch topologies by eliminating the need for a charge pump or bootstrap drive. Typical applications include battery-operated portable electronics, load switches for power rails, power-path management in smartphones and wearables, and small DC-DC converter stages. The -8V rating and 5A capability fit single-cell lithium-ion battery systems. Design with care regarding thermal management: at 1.7W maximum dissipation in a tiny footprint, PCB copper pours under the solder balls are essential. Verify gate-drive voltage levels, as RDS(on) is strongly VGS dependent in this low-voltage device.
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.
DMC2400UV-7 - 20V Complementary N/P MOSFET Array | Diodes Inc
The Diodes Incorporated DMC2400UV-7 is a complementary pair enhancement-mode MOSFET array integrating one N-channel and one P-channel MOSFET in a single SOT-563 surface-mount package, with 20V drain-to-source voltage rating and continuous drain current of 1.03A (N-channel) and 700mA (P-channel). What is a MOSFET array? A MOSFET array is a single package that contains two or more discrete MOSFET transistors, often configured as a complementary pair (N-channel + P-channel) or as dual N-channel or dual P-channel devices. MOSFET arrays sit within the discrete semiconductor hierarchy of MOSFET -> transistor -> semiconductor device. By co-packaging both polarities, designers can build H-bridges, level shifters, and bidirectional load switches with a single IC footprint, reducing BOM count, parasitic inductance, and PCB area versus using two separate SOT-23 MOSFETs. Key features include low on-state resistance (RDS(on) of 480 mOhm max at VGS = 4.5V, 200mA per the verified web data), low gate threshold voltage below 1V, low input capacitance, fast switching speed, and minimal input/output leakage. The SOT-563 package measures approximately 1.6mm x 1.6mm, making this part suitable for ultra-compact designs. Total package power dissipation is rated at 450mW under standard test conditions, and the device operates across the standard -55C to +150C junction temperature range. The DMC2400UV uses trench MOSFET technology optimized for low RDS(on) while preserving switching performance, making it efficient for high-frequency DC-DC converter stages. The N-channel and P-channel devices share the same die platform, simplifying thermal management and ensuring matched switching characteristics for synchronous-rectifier topologies. Typical applications include load switching in portable electronics, power management in battery chargers, signal-level shifting between rails, audio cross-over switching networks, and miniature DC motor driver stages. The complementary configuration is also commonly used in low-power H-bridge motor drivers and USB load-switch circuits. When designing with this part, pay close attention to gate-drive voltage. Because the gate threshold is below 1V, a 3.3V GPIO can fully enhance the N-channel device; however, designers should confirm adequate VGS for the P-channel at the chosen load current. Place a 100nF ceramic bypass capacitor as close as possible to the common source node to suppress switching transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and source the DMC2400UV-7 efficiently.
DMN3190LDW-7 - 30V Dual N-Channel MOSFET Array | Diodes Inc | SOT-363
The Diodes Incorporated DMN3190LDW-7 is a dual N-channel enhancement-mode MOSFET array rated at 30V VDS and 1A continuous drain current, housed in a 6-pin SOT-363 (SC-70) surface-mount package. The device integrates two low-on-resistance N-channel transistors optimized for high-efficiency power management and fast switching applications in compact portable designs. An N-channel enhancement-mode MOSFET is a voltage-controlled field-effect transistor whose channel conductivity is induced when a positive gate-to-source voltage exceeds the threshold voltage. In dual-MOSFET array packages, two transistors share the same small outline footprint, allowing designers to implement synchronous rectifiers, load switches, or half-bridge stages without doubling PCB area. Such arrays sit within the broader hierarchy of discrete semiconductors > MOSFETs > small-signal MOSFETs > load-switch MOSFETs. Key features include an exceptionally low RDS(ON) that minimizes conduction loss, fast turn-on/turn-off times that reduce switching loss, and a logic-level gate drive threshold compatible with 1.8V-5V microcontroller GPIO. The DMN3190LDW-7 is engineered to deliver superior switching performance while maintaining low on-state resistance, making it ideal where every milliwatt of loss matters. The green-compliant SOT-363 package is fully RoHS compliant and suitable for lead-free reflow profiles up to 260C peak. Typical applications include portable device load switching, battery protection circuits in lithium-ion packs, USB power switching, signal isolation in analog front-ends, and high-side/low-side drivers in small DC-DC converter stages. Designers also use this array for level shifters and discrete OR-ing diodes in redundant power paths. The compact SOT-363 footprint (frees 2.0 x 2.1 mm) supports dense board layouts where multiple switches must coexist with other analog ICs. When designing with this device, ensure that the gate drive rise time is fast enough to fully enhance the channel and minimize the linear-region transition loss. Place gate-source pull-down resistors (typically 100k) to prevent accidental turn-on during power-up transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an information gain layer for engineers evaluating DMN3190LDW-7 for next-generation portable designs.
DMP2066LSN-7 - 20V P-Channel MOSFET, 4.6A, 40mΩ | Diodes Inc
The Diodes Incorporated DMP2066LSN-7 is a P-channel enhancement-mode MOSFET rated at 20V VDS, 4.6A continuous drain current (TA = 25°C), and a maximum on-resistance of 40 mΩ at VGS = -4.5V. Packaged in a 3-pin SC-59-3 / SOT-23-3 surface-mount form factor, this part is designed as a small-signal load switch or low-side PWM driver in space-constrained designs. The device uses advanced trench technology to provide low on-resistance, low gate charge, and operation with gate drive as low as 1.8V, making it suitable for direct interfacing with low-voltage microcontrollers and 1.8V GPIO logic. A P-channel enhancement-mode MOSFET is a type of field-effect transistor that conducts when a negative gate-to-source voltage (relative to its source pin) is applied. P-channel MOSFETs are commonly used as high-side switches in battery-powered and low-voltage systems, where their ability to turn on with a logic-level low signal simplifies gate-drive circuitry. Within the broader taxonomy, a P-channel MOSFET belongs to the MOSFET family, which in turn sits under discrete semiconductors and power management devices, providing switching and amplification functions for current flow in electronic circuits. Key features include a maximum drain-to-source voltage of 20V, 4.6A continuous drain current at TA = 25°C, a typical on-resistance of 40 mΩ at VGS = -4.5V (datasheet also lists 70 mΩ at VGS = -2.5V), 1.25W power dissipation at TA = 25°C, and built-in ESD protection. The trench gate structure minimizes conduction losses and switching charge, while the SC-59-3 (SOT-23-3 equivalent) package provides a footprint compatible with industry-standard discrete layouts and reduces board area compared to larger DPAK or SO-8 alternatives. Typical applications for the DMP2066LSN-7 include load switching in portable electronics, battery protection circuits, USB power rails, LED driver switches, low-side PWM dimming, and power-rail ORing. The AEC-Q101 qualification indicates the device is suitable for high-reliability automotive designs, while RoHS compliance and lead-free construction meet modern environmental requirements for consumer and industrial products. When designing with this part, confirm that switching transients and load-dump events in 12V automotive systems stay within the 20V VDS rating, and ensure that gate-drive voltages remain within the rated VGS range (typically ±8V absolute maximum). For PWM applications, the low gate charge reduces driver losses at high switching frequencies.