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NX3225GA-55.46667HMZ - 55.46667MHz SMD Crystal | NDK | OA/AV Timing
The NDK NX3225GA-55.46667HMZ is a compact surface-mount quartz crystal unit oscillating at 55.46667 MHz in an ultra-thin 3.2 x 2.5 x 0.75 mm ceramic SMD package (3225 footprint, 2-pad). As part of NDK's NX3225GA Standard series for office automation (OA) and audiovisual (AV) equipment, it delivers high-frequency stability in one of the smallest footprints in its class. A quartz crystal unit is a passive frequency-control device that uses the piezoelectric resonance of an AT-cut quartz blank to generate a highly stable reference frequency. Within the timing-device hierarchy, it sits at the component level: crystal unit -> resonator -> frequency-control component -> system clock source, feeding oscillators, PLLs, MCUs, SoCs, and networking PHYs that require a precise clock reference. Key features include the ultra-compact and thin 3.2 x 2.5 x 0.75 mm (typ.) seam-welded ceramic package, excellent environmental resistance including heat and shock resistance, and excellent electrical performance optimized for OA and AV related equipment. The seam-sealed construction protects the resonating quartz element from moisture and contaminants, supporting reflow soldering processes. Technically, the NX3225GA family covers a fundamental/ overtone frequency range in the tens of MHz; per the NDK standard specification (STD-CRG-2), equivalent series resistance limits scale with frequency, for example 50 ohms max in the 20 to 50 MHz band. The 55.46667 MHz calibration frequency is trimmed to tight tolerance at the factory, and the precise 55.46667 MHz value is commonly used for high-speed serial and video clock synthesis. Typical applications include LAN and networking equipment, digital video and set-top box clock references, OA equipment such as printers and scanners, and AV amplifiers or display timing circuits where board space is constrained. Design consideration: PCB layout must respect the crystal's load capacitance specification; stray board capacitance shifts the operating frequency, so keep traces short and place ground guarding around the crystal pads. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
PFL2015-682ME - 6.8µH Shielded Power Inductor | Coilcraft
The Coilcraft PFL2015-682ME is a 6.8 µH molded shielded surface-mount power inductor rated for 680 mA saturation current and 400 mOhms DC resistance (DCR), housed in a compact 2.0×2.0×1.5 mm composite-core package. It belongs to the PFL2015 family of ultra-small molded power inductors that combine small size, high efficiency, and a competitive price point for switching converter output filtering. A power inductor is a passive energy-storage element that stores energy in a magnetic field when current flows through its windings, then releases that energy to maintain continuous conduction in switching DC-DC converters. The molded shielded construction places the winding inside a composite magnetic core and a magnetically-shielded housing, suppressing stray flux that would otherwise couple into adjacent traces or components. PFL2015-682ME sits in the inductor taxonomy as: molded power inductor → shielded power inductor → SMD power inductor → passive component. Key features include a soft-saturation characteristic that allows brief peaks above the saturation rating without hard inductor roll-off, an AEC-Q200 qualification supporting automotive reliability requirements, a low DCR of 400 mOhms that minimizes I²R conduction loss, and a shielded package that reduces EMI in dense PCB layouts. The 6.8 µH inductance is set by the coil geometry using a composite core material, providing repeatable performance across the −40 °C to +125 °C operating temperature range. Typical applications include DC-DC buck and boost converter output filters, point-of-load (POL) regulators, battery-powered portable device power management, automotive infotainment and ADAS power rails, and LED driver output stages. The 680 mA current rating supports mid-current rails such as 3.3 V or 5 V core supplies and most sub-amp loads. Designers should derate saturation current at elevated ambient temperature (typically to 80% at 85 °C) and place the inductor adjacent to the switching node to minimize the AC loop area, which improves efficiency and reduces radiated EMI. Verify that the saturation rating covers the converter peak inductor current, not just the average load current. This page consolidates distributor pricing, AEC-Q200 compliance context, drop-in PFL family alternatives, and application notes that are not present in the Coilcraft catalog entry.
PFL2015-682MEC - 6.8µH Shielded Power Inductor | Coilcraft
The Coilcraft PFL2015-682MEC is a 6.8 µH shielded molded power inductor rated for 680 mA saturation current with a 400 mΩ maximum DC resistance (DCR), housed in an ultra-compact 2.2 x 1.4 mm SMD package. It is part of Coilcraft's PFL2015 family of miniature shielded power inductors designed for high-density DC-DC converter applications where board area is at a premium. A shielded power inductor is a wire-wound passive component that stores energy in a magnetic field while providing low core losses and excellent EMI containment through a magnetic shield (typically a ferrite casing or core geometry). In modern power-supply design, shielded inductors sit between the discrete inductor and the integrated power module: they outperform unshielded wire-wound parts in EMI-sensitive layouts and offer a smaller footprint than toroidal equivalents. The PFL2015 family belongs to the broader molded-power-inductor category, which itself traces up the hypernym chain to power inductors → inductors → passive components. Key features of the PFL2015-682MEC include a 20% inductance tolerance, soft saturation behavior that tolerates high peak currents, magnetic shielding for high-density PCB layouts, and an AEC-Q200 grade-1 automotive qualification (-40 °C to +125 °C) that suits under-hood and ADAS power trees. The molded construction eliminates audible buzzing under high-ripple conditions. Architecturally, the PFL2015-682MEC uses a low-loss ferrite core geometry optimized for sub-100 MHz switching frequencies, with a single-wire-wound coil terminated to flat solderable pads. Compared to non-shielded inductors of equivalent rating, the magnetic shield reduces near-field coupling by more than 10 dB at 1 cm, eliminating the need for keep-out zones around noise-sensitive analog rails. Typical applications include smartphone PMIC output filtering, IoT sensor-node buck converters, automotive infotainment power rails, USB-PD adapters, and wearable-device battery-management modules. The AEC-Q200 rating makes it especially attractive for ADAS camera modules and instrument-cluster power supplies. When designing with this part, derate Irms by 30% above 85 °C ambient, and ensure the PCB land pattern matches Coilcraft's recommended 2.5 x 1.7 mm footprint with reflow profile per J-STD-020. The molded body tolerates standard lead-free reflow up to 260 °C peak for 30 seconds. This page synthesizes distributor pricing, AEC-Q200 compliance data, and drop-in alternatives for the PFL2015-682MEC that the bare Coilcraft datasheet does not present in a single comparison view.
POE025-PD13050S - 25W PoE PD Transformer, 5V Out | Bourns
The Bourns POE025-PD13050S is a 25 W Power over Ethernet (PoE) powered-device (PD) flyback transformer for DC/DC converters, delivering a 5 V isolated output in a compact EPD13 surface-mount package with 10 gull-wing terminals, 1500 Vrms isolation, and a 200 kHz switching-frequency rating. A PoE transformer is the magnetic energy-storage element at the heart of an isolated flyback converter used in powered devices such as IP cameras and wireless access points. It provides galvanic isolation between the IEEE 802.3at/af powered-device interface and the low-voltage logic rails, while its turns ratios set the conversion ratio from the PoE input range down to the system supply. Within the power-conversion hierarchy, it sits in the magnetic components family alongside SMPS transformers and inductors, and is a direct companion to PoE PD controller ICs and PWM controllers. Key features of this part include a 25 W power throughput suitable for PoE Class 4 (30 W-class, IEEE 802.3at) designs, a 6:1 / 2.57:1 / 6:1 multi-winding turns-ratio set per distributor datasheet listings, and 1500 Vrms (1500 VAC) isolation between primary and secondary windings. The surface-mount gull-wing terminal construction supports automated assembly and reflow soldering. The EPD13 core geometry gives a compact footprint for space-constrained PD interfaces while providing adequate winding window for the 25 W flyback power level at 200 kHz operation. Per the Bourns POE-EP & POE-PD series datasheet, the POE025-PD13050S is rated for an operating temperature range of -40 C to +125 C, and the series is RoHS compliant per Directive 2015/863. Multi-tap secondary windings allow flexible output regulation with feedback via optocoupler and a TL431-type shunt regulator. Typical applications include VoIP phones, WLAN access points, security IP cameras, and other IEEE 802.3 PoE powered devices that need an isolated 5 V rail. The transformer pairs naturally with Bourns-recommended PD controller and MOSFET solutions in reference flyback topologies. When designing with this transformer, verify that the switching controller frequency matches the 200 kHz transformer rating and that clamp/snubber networks are fitted on the primary leakage inductance to protect the main switch. Keep creepage and clearance distances intact on the PCB to preserve the 1500 Vrms isolation barrier. This page synthesizes distributor pricing from LCSC and DigiKey, the Bourns POE-EP/POE-PD series datasheet, drop-in same-family alternatives, and practical flyback design notes not found in the manufacturer datasheet alone.
RC0603FR-0710KL - 10kOhm 1% 0.1W 0603 Chip Resistor | YAGEO
The YAGEO RC0603FR-0710KL is a 10 kOhm surface-mount thick film chip resistor with a resistance tolerance of ±1%, a power rating of 0.1 W (1/10 W), and a 0603 (1608 Metric) package. It belongs to YAGEO's RC general-purpose series, which uses lead-free terminations and a moisture-resistant thick film construction. A chip resistor is the most fundamental passive component in electronics: a fixed resistor that limits current, sets gain in amplifier networks, forms voltage dividers, and provides pull-up/pull-down biasing. Chip resistors sit within the broader hierarchy of passive components -> resistors -> fixed resistors -> surface-mount thick film resistors. The 0603 imperial size (1.6 mm x 0.8 mm, hence 1608 Metric) is the workhorse SMD package, balancing density, pick-and-place handling, and power capability. Key features of the RC0603FR-0710KL include its precise ±1% tolerance, a temperature coefficient of ±100 ppm/C, and a moisture-resistant protective overcoat suitable for standard reflow assembly. The thick film resistive element is laser-trimmed for accuracy, and the lead-free nickel-plated terminations ensure excellent solderability and compatibility with lead-free (RoHS) soldering profiles. Technically, the thick film process deposits a ruthenium-oxide-based resistive paste on a ceramic alumina substrate, which is then laser trimmed to the target resistance. The ±100 ppm/C TCR keeps value drift to roughly 0.1% over a 100 C temperature swing, so in most general-purpose circuits the 1% tolerance dominates overall accuracy. The 0.1 W rating applies with proper PCB land patterns per the manufacturer specification sheet; derating is required at elevated ambient temperatures. Typical applications include general purpose voltage dividers, pull-up/pull-down networks for digital I/O and I2C/SPI buses, current limiting for LEDs, feedback networks around DC-DC converters and LDO regulators, and gain-setting resistors around operational amplifiers where 1% accuracy is sufficient. Design tip: for circuits needing better than 1% accuracy or higher power, move to YAGEO's 0.5% (D tolerance) RC0603 variants or a larger 0805 package; for automotive qualification, choose the AC0603FR-0710KL AEC-Q200-style automotive variant with the same footprint. This page synthesizes distributor pricing, drop-in cross-brand alternatives, application guidance, and design notes not found in a single manufacturer datasheet, helping engineers and buyers source the RC0603FR-0710KL with confidence.
RC0805FR-0710KL - 10kOhm 1% 0.125W 0805 Chip Resistor | YAGEO
The YAGEO RC0805FR-0710KL is a 10 kOhm thick film surface-mount chip resistor with +/-1% resistance tolerance, 0.125 W (1/8 W) power rating, and +/-100 ppm/C temperature coefficient, packaged in the industry-standard 0805 (2012 metric) case size with moisture-resistant construction. A chip resistor is the most fundamental passive component in electronics: a fixed-resistance element that limits current, divides voltage, sets bias points, and terminates transmission lines. Within the component hierarchy, it belongs to the resistor family under passive components, and the 0805 surface-mount format is one of the most widely consumed packages in the global electronics industry, occupying the middle ground between the smaller 0603 (typically 100 mW) and the larger 1206 (typically 250 mW) sizes. Compared to 0603, the 0805 footprint provides 25% more rated power dissipation, a meaningful upgrade when thermal margin matters. Key features of the RC0805FR-0710KL include a maximum working voltage of 150 V, high reliability thick film element on an alumina substrate, lead-free pure-tin plated terminations, and moisture resistance suitable for standard reflow soldering processes. The F code in the MPN denotes the +/-1% tolerance grade, and the L suffix identifies the tape-and-reel (7-inch reel) packaging format for automated pick-and-place assembly. Technically, the resistive element is a ruthenium-oxide-based thick film paste screen-printed onto a 96% alumina ceramic substrate and laser-trimmed to the 10 kOhm nominal value. YAGEO's thick film process delivers tight tolerance distribution and stable TCR behavior across the -55C to +155C operating range typical of the RC series, with a rated ambient temperature derating above 70C per the manufacturer datasheet. Typical applications include general-purpose pull-up/pull-down networks, voltage dividers in consumer electronics, signal conditioning in industrial control boards, gain-setting resistors around operational amplifiers, and current limiting for LEDs and logic inputs. The 1% tolerance supports precision divider ratios without the cost of thin film parts. Design consideration: at the full 0.125 W rating, plan PCB copper area for heat dissipation and consider derating to 50-70% of rated power in dense assemblies or high ambient temperatures to maximize long-term reliability and drift performance. This page synthesizes distributor pricing, drop-in alternatives from Vishay and Bourns, and practical design notes not found in the manufacturer datasheet, providing engineering context for sourcing decisions.
RNR55E9092FSRSL65 - 90.9kOhm 0.125W Mil Metal Film Resistor | Vishay
The Vishay Dale RNR55E9092FSRSL65 is a precision 90.9 kOhm metal film through-hole resistor with a ±1% tolerance and a 0.125 W (1/8 W) power rating, supplied in an axial-leaded, flame-retardant, moisture-resistant package designed for military and high-reliability applications. A fixed through-hole resistor is a passive two-terminal component that provides a defined resistance for current limiting, voltage division, gain setting, and pull-up or pull-down functions in a circuit. In the passive-component hierarchy, the metal film resistor sits above generic carbon-film types in precision and stability, and the RNR55 family belongs to the military-grade precision resistor class established under the MIL-PRF-55182 style heritage, where controlled temperature coefficient, moisture resistance, and flame-retardant coating are mandatory attributes. Key features of the RNR55E9092FSRSL65 include the tight 90.9 kOhm E96-series value, a ±1% tolerance for accurate analog bias networks, a 0.125 W power rating suited to signal-level circuits, an axial through-hole body that supports reliable hand and wave soldering, and a metal film resistive element with flame-retardant, moisture-resistant coating per the military specification family. The RSL65 suffix in the part number encodes lead finish and established-reliability feature coding used by Vishay for space and defense procurement. Technically, the metal film element is deposited on a ceramic core and laser-trimmed to the nominal 90.9 kOhm value, giving the part lower excess noise and better long-term stability than carbon composition types. The military-grade construction emphasizes environmental robustness: conformal flame-retardant coating and moisture-resistant encapsulation protect the element in humid, thermally stressed environments typical of defense, avionics, and industrial instrumentation platforms. Typical applications include high-reliability analog signal chains in avionics and defense electronics, precision voltage dividers and reference networks in test and measurement equipment, bias networks in industrial instrumentation, and legacy military program sustainment where MIL-style metal film resistors are specified by drawing. A key design consideration is power derating: at 0.125 W rating, designers must derate significantly at elevated ambient temperatures per the manufacturer specification, and lead spacing must match the axial body length to avoid mechanical stress on the solder joints. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical military-resistor design notes not consolidated in the manufacturer datasheet alone.
RT0402CRD079R09L - 9.09 Ohm Thin Film Chip Resistor | YAGEO
The YAGEO RT0402CRD079R09L is a precision thin-film chip resistor with a nominal resistance of 9.09 Ohms and a tolerance of plus-or-minus 0.25 percent, rated for 0.063 W (1/16 W) continuous power dissipation. It is supplied in an industry-standard 0402 (1005 metric) surface-mount package, making it compatible with high-density PCB assemblies where low noise and tight tolerance are required. A thin-film resistor is a passive component whose resistive element is a sputtered metal-alloy film, typically nickel-chromium, deposited on a ceramic substrate. Because the film is patterned by photolithography rather than by composition variation as in thick-film resistors, thin-film parts deliver tighter absolute tolerance, lower temperature coefficient of resistance (TCR), and markedly lower current noise. Within the broader taxonomy, this device is a chip resistor -> surface-mount resistor -> passive component -> electronic component, and YAGEO's RT series is the company's precision thin-film line. Key features include the plus-or-minus 0.25 percent tolerance, a 0402 footprint measuring 1.0 mm by 0.5 mm, and the moisture-resistant thin-film construction typical of the YAGEO RT family. The series is qualified for reflow soldering at peak temperatures up to 260 degrees Celsius and is RoHS compliant. Although YAGEO's general thin-film rating for the 0402 case size is 1/16 W (0.063 W) at 70 degrees Celsius, designers must derate to zero power at the upper operating temperature of 155 degrees Celsius per the RT datasheet. The RT0402CRD079R09L uses the same NiCr film technology as other parts in the RT family, which YAGEO documents at TCR values as low as plus-or-minus 25 ppm per degree Celsius and very low current noise of less than minus 35 dB. The 9.09 Ohm value is part of the standard E96 resistance series, allowing tight tolerance and low drift in precision analog circuits such as feedback networks, current-sense shunts, and reference-setting dividers. Typical applications include precision analog front-ends, sensor-signal conditioning, current-sense paths for low-voltage rails, precision gain-setting resistor pairs in instrumentation amplifiers, and test-and-measurement reference dividers. The 0.1 percent-class stability over time (per the RT family long-term drift data) also makes it suitable for load-cell and weighing-scale analogue signal chains. When designing with this part, observe the manufacturer's derating curve by reducing applied power as the ambient temperature approaches 155 degrees Celsius, and select adjacent series values such as 9.10 Ohm or 9.05 Ohm if the E96 9.09 Ohm nominal is unavailable across preferred suppliers. Use a copper pad geometry that matches the 0402 land-pattern recommendation to avoid tombstoning during reflow. This page synthesises distributor availability, drop-in alternatives, and the manufacturer's derating guidance into a single engineer-focused reference that complements the official datasheet.
RT0805WRD072KL - 2kΩ 0.05% 1/8W Thin Film Chip Resistor | YAGEO
The YAGEO RT0805WRD072KL is a 2 kΩ thin-film chip resistor with ±0.05% tolerance and 1/8 W (0.125 W) power dissipation, packaged in the industry-standard 0805 (2012 metric) surface-mount footprint measuring 2.0 x 1.25 mm. As part of YAGEO's RT-series high-precision thin-film resistor family, this part is engineered for circuits that demand tight resistance tolerance, low temperature coefficient of resistance (TCR), and excellent long-term stability over a wide operating temperature range. A chip resistor is a passive two-terminal component that provides a defined value of electrical resistance in a surface-mount package. The 0805 imperial code designates a 2.0 mm x 1.25 mm land pattern, while the "2012 metric" notation refers to the same dimensions in metric (2.0 mm x 1.25 mm). Within the broader taxonomy, this part is a thin-film chip resistor, a sub-category of fixed resistors, which themselves belong to the passive component family used in nearly every electronic circuit for current limiting, voltage division, biasing, and signal conditioning. Key features include ±0.05% resistance tolerance (significantly tighter than standard 1% or 5% thick-film chip resistors), 25 ppm/°C nominal TCR for stable performance across temperature, 1/8 W rated power at 70°C, and compliance with lead-free reflow profiles up to 260°C peak. The thin-film nichrome resistive element sputtered onto a ceramic alumina substrate delivers lower noise (-40 dB typical) and better high-frequency characteristics than thick-film equivalents. The end terminations are wrap-around Ni-barrier with matte-tin plating for excellent solderability and leach resistance during multiple reflow cycles. Technically, the thin-film sputtering process produces a uniform resistive layer whose cross-section and composition can be laser-trimmed to within ±0.05% of the target value. This precision enables the resistor to be used as a reference element in measurement-grade signal chains. The 0805 package supports standard pick-and-place assembly, and the part is qualified against industry reliability standards including AEC-Q200 (for the qualified grade). Typical applications include precision analog front-ends, instrumentation amplifier gain-setting networks, precision voltage dividers in ADCs and DACs, bridge excitation circuits in load cells and pressure sensors, test and measurement equipment, and medical instrumentation. Designers also select this tolerance class for feedback networks in switching regulators where resistor mismatch directly affects output accuracy. When designing with the RT0805WRD072KL, observe derating guidelines above 70°C ambient: power dissipation must be linearly reduced to zero at 155°C. For precision divider networks, pair two resistors of the same lot to minimize ratio drift. This page consolidates distributor pricing, drop-in alternatives, and application engineering notes beyond what the YAGEO datasheet alone provides.
Reel - Tape & Reel Packaging Suffix Code | EIA-481-E Standard
The term "Reel" is an industry-standard packaging suffix code (not a standalone component MPN) appended to an integrated circuit's part number to indicate that the device ships on a continuous carrier tape wound onto a 7-inch or 13-inch antistatic plastic reel, conforming to EIA-481-E. This suffix is used by every major IC manufacturer, including Analog Devices (e.g., AD5822BCBZ-REEL, AD827JR-16-REEL, ADM2483BRWZ-REEL, AD1865R-REEL), FTDI (FT232RNL-REEL), and Texas Instruments, to distinguish reel-packaged production quantities from tray, tube, or bulk packaging of the same underlying silicon die. The reel itself is a high-impact polystyrene (HIPS) or polystyrene (PS) carrier designed to protect tape-reeled components from ESD, mechanical shock, and contamination during shipping and automated pick-and-place assembly. Background: EIA-481-E is the Electronic Industries Alliance standard that defines carrier-tape dimensions, pocket spacing, cover-tape peel strength, and reel geometry for surface-mount device packaging. Tape-and-reel packaging enables high-volume SMT assembly by allowing pick-and-place machines to automatically feed components from a continuous tape strip; the reel is the spool on which this tape is wound for storage, transport, and machine loading. Common reel diameters are 7 inches (178 mm) for prototype and small production runs, and 13 inches (330 mm) for high-volume manufacturing. A 7-inch reel typically holds 1,000 to 3,000 components depending on package thickness, while a 13-inch reel holds 4,000 to 10,000+ units. Key features of a compliant antistatic reel include EIA-481-E dimensional conformance, antistatic (surface resistivity 10^6 to 10^11 ohm/sq) High Impact Polystyrene construction, hub compatibility with standard SMT feeder widths (typically 8 mm, 12 mm, 16 mm, 24 mm, 32 mm, 44 mm, 56 mm, 72 mm, 88 mm, and 104 mm), and a manufacturer-proprietary barcode label area for automated traceability. The reel's hub diameter and width must match the carrier tape width exactly to prevent tape deformation during high-speed unwind. Technically, reel selection is determined by the carrier tape width of the device being packaged. SOIC-8 uses 12 mm tape, VQFN-20 uses 16 mm tape, and larger QFP packages may use 24 mm or 32 mm tape. Reels are ESD-safe (typically compliant with ANSI/ESD S541), RoHS-compliant for the polymer materials used, and recyclable under standard polystyrene waste streams. Manufacturer-specific reel part numbers (e.g., ADVPR series from Advantage Carrier Tape, 3M, or Tek Pak) are interchangeable as long as EIA-481-E dimensions match. Typical applications include automated SMT assembly lines for high-volume consumer electronics, automotive ECU production, industrial IoT device manufacturing, and aerospace avionics production. Reels are also used in semiconductor distribution centers for standardized storage and for component replenishment on pick-and-place machines during continuous production runs. When ordering ICs in production quantities, the "-REEL" suffix on the MPN is the standard convention and the same die is supplied as in tube or tray packaging - only the carrier format differs.
SCMM2512S2-0M80F - 0.8 mOhm 2W Current Sense Resistor | Cyntec
The Cyntec SCMM2512S2-0M80F is a 0.8 milliohm (±1%), 2 W surface-mount current-sense chip resistor in a 2512 (6332 metric) metal-film package. It is engineered for current-sensing applications that require a low-resistance shunt with high pulse-withstanding capability, low thermal EMF, and stable performance across temperature. The 2512 footprint measures approximately 6.35 mm × 3.20 mm, and the part ships in tape-and-reel packaging for high-volume SMT assembly. According to the Cyntec SCMM2512S2 datasheet, the SCMM2512S2 family is offered lead-free and halogen-free. A current-sense resistor is a low-ohm precision resistor placed in series with a load so that the voltage drop across it is proportional to the load current. This voltage drop is then amplified by an op-amp, current-sense amplifier, or ADC channel to implement closed-loop control, telemetry, or protection. Current-sense resistors sit in the signal-chain hierarchy as: current-sense resistor -> passive component -> resistor -> chip resistor -> SMD resistor. They are preferred over Hall-effect sensors and current transformers when accuracy, bandwidth, and cost are the primary design drivers. Key features of the SCMM2512S2-0M80F include 0.8 milliohm (1% tolerance), 2 W continuous power rating, a metal-film resistive element, and pulse-withstanding construction. Its 2512 footprint provides a large solder-pad area for heat spreading, while the low resistance value minimizes both I2R conduction loss and the insertion voltage burden in the load path. Compared with sense resistors above 5 milliohm, a 0.8 milliohm part reduces wasted power by more than 6x at the same load current. From a technical perspective, the SCMM2512S2 series uses Cyntec's metal-film process on a ceramic substrate, providing a typical TCR of ±100 ppm/°C or better and an operating temperature range that supports automotive underhood and industrial environments. The low-ohm metallization is tuned to give low thermal EMF against copper pads, which keeps measurement error below 1% in typical 4-wire Kelvin layouts. Typical applications for the SCMM2512S2-0M80F include DC-DC converter output current feedback, battery-pack charge/discharge monitoring in BMS designs, motor-control current sensing in industrial drives, USB-PD and high-current Type-C ports, server and telecom 12 V/48 V rail monitoring, and automotive ECU power monitoring. Designers choose it when they need a low-ohm, high-power, pulse-tolerant shunt in a standardized 2512 land pattern. When laying out this part, use a Kelvin (4-wire) connection to the sense pads so that the high-current path and the voltage-sensing path are physically separated. Place the sense traces close together and away from switching nodes to avoid capacitive coupling; add a small RC filter at the amplifier input to reject high-frequency noise. Reserve at least 1 oz copper on both top and inner layers under the pads to keep the resistor temperature rise within the 2 W rating. This page consolidates distributor pricing for the SCMM2512S2-0M80F, drop-in and parametric equivalents, and practical layout notes that are not reproduced in the Cyntec datasheet itself.
SFR2500002550FR500 - 255Ω 0.4W 1% Metal Film Resistor | Vishay
The Vishay SFR2500002550FR500 is a 255 Ω through-hole axial metal film resistor from the SFR25 series, rated for 0.4 W power dissipation with a ±1% tolerance and ±100 ppm/°C temperature coefficient. Housed in a compact 0207-size axial leaded package, this part is supplied on Tape & Reel (TR) with 5000 pieces per reel and is drop-in compatible with the historical SFR55 designation from BC Components. A metal film resistor is a passive electronic component whose resistive element is a thin homogeneous layer of metal alloy deposited on a high-grade ceramic substrate, then laser-trimmed to a precise resistance value. Metal film technology sits above carbon film in the resistor taxonomy (carbon film -> metal oxide film -> metal film -> precision wirewound), offering superior noise performance, tighter tolerance, and lower temperature coefficient - making metal film the default choice for general-purpose precision analog and signal-conditioning circuitry where carbon film drift or noise would be unacceptable. Key features include a low-noise specification of maximum 1.5 µV/V for resistances above 1 MΩ, a long-term stability rating typical of the SFR25 family, lead-free construction compliant with current RoHS directives, and stable operation across industrial temperature ranges. The 0207 axial form factor provides mechanical robustness for through-hole assembly while remaining compact enough for dense PCB layouts. Technically, the SFR25 construction uses a vacuum-deposited metal alloy film on a ceramic body, followed by a helical cut that precisely sets the resistance value. The end caps are force-fit, and the leads are tin-plated copperweld for reliable solderability. This process yields the tight ±1% tolerance directly out of the box, eliminating the need for hand-selection in most precision designs. Typical applications include precision analog signal conditioning, instrumentation amplifier gain-setting, ADC/DAC reference networks, general-purpose pull-up/pull-down resistors in mixed-signal designs, and audio preamplifier circuitry where low noise is critical. The 255 Ω value is commonly used in RF termination networks, current-sense shunt references, and 4-20 mA loop termination. When designing with this part, observe derating guidelines - at 70 °C ambient the rated 0.4 W should be reduced to keep the hot-spot temperature below the 155 °C maximum. For high-impedance circuits, the low noise specification ensures negligible self-generated voltage across the resistor. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in any single manufacturer datasheet.
SIT1602BC-23-33N-28.636300 - 28.6363 MHz LVCMOS XO 3.3V | SiTime
The SiTime SIT1602BC-23-33N-28.636300 is a 28.6363 MHz HCMOS/LVCMOS fixed-frequency crystal oscillator (XO) operating from a 3.3 V supply in a 4-pin 3.2 x 2.5 mm SMD package. It provides a standard 50 ppm frequency stability across the -20 °C to +70 °C commercial operating range, with default drive strength and a no-connect feature on the standby pin. An XO (crystal oscillator) is a self-contained timing device that delivers a fixed square-wave frequency without requiring an external resonator, used as a system clock source in digital designs. The SiT1602B family is built on SiTime's silicon MEMS technology rather than quartz, which yields superior mechanical robustness, better immunity to vibration and shock, and tighter stability than legacy quartz-based oscillators in the same footprint. Key features include 28.6363 MHz nominal output, 50 ppm total stability over temperature, 3.3 V single-supply operation, HCMOS/LVCMOS-compatible output drive, and a small 3.2 x 2.5 mm 4-pin SMD package. The datasheet specifies 100% pin-to-pin compatibility with conventional quartz XOs of the same package footprint, simplifying migration paths and re-designs. Architecturally, the SiT1602B integrates a MEMS resonator, a low-jitter PLL, and an HCMOS output driver on a single die. Because the resonator is silicon and factory-trimmed, the part exhibits markedly better start-up consistency, lower sensitivity to board-level stress, and improved frequency aging versus quartz equivalents, at a comparable bill-of-materials cost. Typical applications include microcontroller and SoC clocking, USB 2.0 reference timing, industrial automation controllers, consumer-electronics main clocks, and embedded serial-link PHYs. Designers select the SIT1602B family when footprint drop-in replacement of a quartz XO is required alongside tighter temperature behavior and improved mechanical durability. When designing with this part, place the decoupling capacitor as close as possible to pin 2 (VDD) and route the output trace (pin 4) over a continuous ground reference to minimize radiated emissions. Confirm that downstream counter/PLL input thresholds are compatible with the LVCMOS swing rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer's standard product page.
SIT1602BI-11-30S-66.600000 - 66.6MHz MEMS XO 3V Standby | SiTime
The SiTime SIT1602BI-11-30S-66.600000 is a low-power, fixed-frequency MEMS oscillator (XO) delivering a 66.6 MHz HCMOS/LVCMOS output from a 1.8V to 3.3V supply in a 4-pin SMD, No Lead (2.5x2.0 mm) package. It is configured for 3.0V operation (the "30" in the part number) and includes a Standby (Power Down) function (the "S" pin-1 option) for battery-aware applications. What is a MEMS oscillator? A MEMS (Micro-Electro-Mechanical Systems) oscillator is a solid-state timing device that replaces traditional quartz crystals with a silicon resonator and an integrated PLL/divider network. Compared to quartz XOs, MEMS XOs provide superior vibration tolerance, better aging characteristics, faster startup (typically 5 ms for the SiT1602 family), and better immunity to EMI. As a fixed-frequency device, the SIT1602B fits into the taxonomy: oscillator -> MEMS oscillator -> XO -> frequency control component -> passive/timing device. Key features include ±20 ppm frequency stability over -40C to +85C, typical supply current of 3.5 mA at 1.8V, and a continuous 1.62V to 3.63V supply range that lets one device serve 1.8V, 2.5V, 2.8V, 3.0V, and 3.3V rails. The SiT1602B is a 100% pin-to-pin drop-in replacement for legacy quartz-based XOs in standard 4-pad SMD layouts, simplifying PCB redesign when migrating from crystal-based oscillators. Architecture-wise, the SiTime MEMS oscillator uses a programmable silicon resonator plus an analog PLL to synthesize the target frequency. Internal LDOs and a temperature-compensation block maintain frequency accuracy over temperature. The Standby pin (S in the part number) drives the device to <10 uA current when held low, which is critical for handheld and IoT battery-powered designs. Typical applications include IoT sensor nodes, wearables, portable medical devices, microcontroller clock inputs, and any compact embedded system where a 66.6 MHz reference is needed and PCB space is at a premium. The 2.5x2.0 mm footprint enables use in tight enclosures such as BLE wearables and small-form-factor industrial modules. When designing with the SiT1602B, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and ensure the Standby pin is either driven logic-high (run) or logic-low (power down) — leaving it floating can cause undefined behavior. The output drive strength is suitable for short PCB traces; if you route the clock to multiple loads, consider buffering. The device does not need an external series resistor, unlike some quartz oscillator circuits. This page synthesizes distributor pricing, drop-in alternatives within the SiT1602 family, and practical design notes not found in the manufacturer datasheet alone.
SIT9002AI-233N33DQ100.00000Y - 100MHz LVDS MEMS Oscillator | SiTime
The SiTime SIT9002AI-233N33DQ100.00000Y is a programmable 100 MHz spread-spectrum differential MEMS oscillator housed in a 6-pin 5.0 x 3.2 mm SMD (5032) package. It delivers LVDS output at 3.3 V supply with ±50 ppm frequency stability across the industrial -40°C to +85°C range, and integrates a -1.0% center-spread modulation profile for EMI reduction. A spread-spectrum oscillator (SSXO) is a programmable timing device that intentionally modulates its output frequency across a narrow band around the target frequency, typically by ±0.5% to ±2.0%. In the hierarchy of timing components, this places the SiT9002 family above standard crystal oscillators (XO) and below more advanced jitter-cleaner PLL devices; it belongs to the broader class of MEMS oscillators that replace legacy quartz resonators with silicon-based mechanical structures. Spread-spectrum modulation is most often used to suppress peak electromagnetic emissions in high-speed serial links. Key features include support for four programmable differential output types (LVDS, LVPECL, HCSL, and CML), integrated 50-ohm near-termination on each output pin, and a pin-1 Select/Digital Enable function for power-gating. The device is built on SiTime's MEMS-first silicon-gate process, which delivers resilience against shock and vibration orders of magnitude better than quartz. Output rise/fall times are held below 1 ns to support 100 MHz LVDS links. At the architecture level, the part combines a MEMS resonator, a fractional-N PLL multiplier, and an LVDS driver. Frequency is factory-programmed between 1 MHz and 220 MHz, while the spread profile is configurable in steps down to -0.25%. The internal PLL supports low multiplicative jitter, typically under 1 ps RMS over the 12 kHz to 20 MHz integration band relevant to PCIe, Ethernet, and SATA reference clocks. Typical applications include PCI Express Gen 2/3 reference clocks, SATA and SAS storage interfaces, multi-gigabit Ethernet PHYs, FPGA fabric clocks in Spartan-6/Kintex-7 reference designs, and high-speed serial link retimers. The -1.0% down-spread profile reduces EMI peak amplitude by approximately 7-10 dB measured at the third harmonic, easing compliance with FCC and CE radiated emissions limits. When designing with this device, place the four-layer stack-up with a continuous ground beneath the 5032 footprint and keep LVDS traces to 100-ohm differential impedance with length matching under 5 mil. Decouple VDD with a 0.1 µF ceramic capacitor placed within 2 mm of pin 4 to suppress PLL power-rail noise modulation. The pin-1 SD input also doubles as output enable; tie it high when unused. This page synthesizes distributor pricing, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone.
SLA40476B-120L - 120nH Shielded Power Bead SMD Inductor | ITG
The ITG Electronics SLA40476B-120L is a 120 nH shielded SMD power bead inductor rated for 77 A continuous current with a maximum DC resistance of 0.125 mOhm, supplied in a nonstandard SMD footprint optimized for high-current power applications. It is part of ITG's SLA40476B family of low-profile, ferrite-shielded inductors intended for use as energy storage chokes in multiphase VR topologies. What is a power bead inductor? A power bead (or "power choke") is a wire-wound or stamped SMD inductor that uses a closed ferrite core path to contain the magnetic field, providing low DCR and high saturation current for switching-converter power stages. Power beads sit one level above chip inductors in the inductor taxonomy (fixed inductor -> chip inductor / wire-wound inductor / power bead), and they sit below discrete common-mode chokes and planar transformers in the magnetics hierarchy. Key specifications for this part include a nominal inductance of 120 nH with a tolerance of 15%, a maximum rated current of 105 A (per datasheet title) or 77 A (per distributor listings), and a maximum DC resistance of 0.125 mOhm. The shielded magnetic structure minimizes radiated EMI and allows adjacent PCB placement without coupling, which is critical in dense multiphase VR layouts. The nonstandard SMD footprint is designed for direct PCB land-pattern compatibility within the SLA40476B series. Typical applications include multiphase buck converters for server and datacom VRMs, GPU/CPU core supply filtering, telecom base-station point-of-load regulators, and high-current POL modules where the inductor must carry tens of amps with minimal conduction loss. The combination of sub-milliohm DCR and high saturation current makes this part suitable for switching frequencies from 500 kHz to 1 MHz. When designing with this part, ensure that the PCB copper pad geometry matches ITG's recommended land pattern to avoid mechanical stress and to maintain thermal dissipation. The closed magnetic path will saturate predictably; derate operating current by 20 percent when ambient exceeds 85 C to preserve inductance tolerance.
SMP253 - Y2 250VAC Class Metallized Paper EMI Suppression SMD | KEMET
The KEMET SMP253 is an impregnated metallized paper EMI suppression capacitor rated for Class Y2 operation at 250 VAC (with variants up to 300 VAC), designed in a surface-mount package optimized for automated assembly. Headline parameters are 250 VAC continuous AC voltage rating, 1500 VDC dielectric withstand voltage, and a capacitance range typically spanning 0.001 µF to 0.047 µF depending on the suffix code, all housed in a rectangular SMD chip footprint with UL 94 V-0 flame-retardant case material. An EMI suppression capacitor (also called a safety capacitor or Y-rated capacitor) is a passive component specifically designed to filter electromagnetic interference on AC mains lines while providing reinforced isolation to protect users from electric shock. Y2-class capacitors in particular are safety-certified for connection between line and earth ground in equipment where failure of the capacitor could not lead to a hazardous electric shock, but where double or reinforced insulation is required. The hierarchy is: capacitor -> film/paper capacitor -> safety capacitor -> Y2 EMI suppression capacitor. Y2 capacitors must pass certified endurance, voltage, and impulse tests per IEC 60384-14. Key differentiating features of the SMP253 include its metallized paper dielectric (versus the more common metallized polypropylene), which provides self-healing behavior and stable capacitance under AC voltage stress. The SMD form factor eliminates the lead wires that typically introduce parasitic inductance in through-hole Y2 capacitors, improving high-frequency filtering performance. A flame-retardant epoxy case rated UL 94 V-0 ensures the part meets safety agency flammability requirements. The series is qualified for automotive-grade applications under the AEC-Q200 stress test standard. Typical applications for the SMP253 include AC line filtering in switch-mode power supplies (SMPS), input EMI filters for industrial motor drives, Y-capacitor placement across isolation barriers in offline LED drivers, USB-PD adapters, and Class II consumer appliances requiring reinforced insulation. The SMD package is particularly valuable in high-volume automated assembly where through-hole safety capacitors would require additional wave-soldering steps. A key design consideration is that Y2 capacitors must be placed only in circuits where the available fault current and transient overvoltages are bounded per IEC 60384-14. Designers should leave adequate creepage and clearance on the PCB and never replace a Y2 capacitor with a non-safety-rated capacitor even if the capacitance and voltage appear to match. For 250VAC continuous operation, the SMP253 is the appropriate selection, while the 300VAC variant is preferred in regions with higher nominal mains voltage.
Samsung CL31B155KAPLNNE - 1.5µF 25V X7R 1206 MLCC | AEC-Q200
Samsung CL31B155KAPLNNE is a 1.5 µF ±10% 25 V X7R multilayer ceramic chip capacitor (MLCC) in a 1206 (3216 metric) surface-mount package, qualified to the AEC-Q200 automotive stress standard. The K temperature characteristic letter indicates ±10% capacitance tolerance over the -55 °C to +125 °C operating range, while the X7R EIA class delivers stable mid-K capacitance (X7R) with predictable temperature and voltage behaviour, suitable for decoupling, filtering, and bulk energy storage. Multilayer ceramic capacitors (MLCCs) are passive two-terminal energy-storage components built from alternating layers of ceramic dielectric and metal electrodes, surface-mountable on a printed circuit board. They sit within the broader hierarchy of ceramic capacitor -> capacitor -> passive component -> electronic component. Within automotive electronics they serve as the workhorse decoupling element, with X7R being the most common mid-K dielectric for general-purpose 1 nF to 10 µF applications that demand moderate volumetric efficiency without the piezoelectric noise or DC-bias collapse associated with Y5V/Y5U/Y5T classes. Key features include a 1.5 µF nominal capacitance with ±10% tolerance, 25 V DC rated voltage (the PL letters indicate an automotive/AEC-Q200 product grade per Samsung's part-number scheme), X7R temperature characteristic (EIA RS-102 / RS-198), and a 1206 (3.2 × 1.6 mm) land pattern compatible with standard SMT reflow profiles at 245 °C peak per J-STD J-020. The 1206 case size provides higher energy density and lower equivalent series resistance (ESR) than smaller 0805 or 0603 parts, while still being small enough for typical automotive ECUs, ADAS sensor boards, and powertrain modules. From an engineering standpoint, X7R MLCCs exhibit DC-bias capacitance loss - the 1.5 µF nominal drops measurably at applied DC voltage - so engineers should consult the AVCC section of the Samsung datasheet and derate capacitance by 30-50% for bulk-2-decade applications. The PL suffix confirms AEC-Q200 qualification, meaning the part has passed thermal-shock, vibration, and biased-humidity stress tests required for automotive use. Typical applications include automotive ECU decoupling, ADAS radar/sensor power-rail bypass, powertrain control modules, and AEC-Q200 in-class automotive electronics. It is also used in industrial DC-DC converter output filters and consumer-grade bulk decoupling where X7R stability is preferred over Y5V. Designers should account for DC-bias derating at 25 V - actual capacitance at rated voltage is typically 30-50% lower than the 1.5 µF nominal. Use a 1 µF effective capacitance budget for bulk-2-decade filtering, to avoid DC-bias undershoot surprise. This page synthesises distributor pricing, drop-in alternatives within the same 1206 footprint, and practical design guidance not found in the bare manufacturer datasheet.
T491A106K010AT - 10uF 10V Tantalum Capacitor 1206 | KEMET
The KEMET T491A106K010AT is a 10 uF solid tantalum capacitor rated at 10 V with a 10% tolerance and 3.8 Ohm ESR, housed in a molded SMD 1206 (3216 Metric, EIA Case A, 3.2 x 1.6 x 1.6 mm) package. A solid tantalum capacitor is a polarized capacitor that uses tantalum metal as the anode with manganese dioxide (MnO2) as the solid electrolyte. Within the passive component hierarchy, it belongs to the capacitor family alongside ceramic and aluminum electrolytic types, and it is valued for high volumetric capacitance, stable electrical parameters over temperature, and no dry-out failure mode. The T491 series is KEMET's industrial-grade MnO2 molded tantalum line, designed specifically for highly automated surface-mount assembly processes. Key features of the T491A106K010AT include a rated voltage of 10 V at 85 C (derated at 125 C), a tight 10% capacitance tolerance (K code), and a specified ESR of 3.8 Ohms, which suits medium-frequency decoupling and bulk filtering. The molded case provides mechanical protection and improved solder-joint reliability versus uncoated chips. The part is RoHS compliant, MSL 1 rated, and supplied tape and reel for automated pick-and-place. Technically, the MnO2 solid electrolyte is self-healing: fault sites convert MnO2 to lower-conductivity Mn2O3, limiting catastrophic short-circuit risk compared with wet electrolytics. Capacitance remains stable across -55 C to +125 C, making the series suitable for demanding industrial environments. Typical applications include general-purpose power-supply input/output filtering, power decoupling for microcontrollers and FPGA rails, and industrial instrumentation where board space and reliability matter. When designing, apply proper voltage derating - KEMET recommends operating at 50% or less of rated voltage for maximum reliability in high-impedance circuits - and observe correct polarity, since reverse bias degrades the dielectric. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
T491D106K016AT - 10uF 16V Tantalum SMD Cap | KEMET
The KEMET T491D106K016AT is a 10 uF molded solid electrolytic (MnO2) tantalum capacitor with a 16 V DC rating and 10% capacitance tolerance, supplied in the industry-standard D case (2917 / 7343 metric, 7.3 x 4.3 mm) surface-mount package. It belongs to the T491 series, KEMET's benchmark family of solid tantalum chip capacitors designed specifically for highly automated surface-mount assembly processes. A solid tantalum capacitor is a polarized fixed capacitor that uses tantalum metal as the anode and manganese dioxide (MnO2) as the solid electrolyte, replacing the wet electrolyte of aluminum electrolytic types. Within the passive-component hierarchy, it sits under capacitors, then electrolytic capacitors, then tantalum capacitors. Compared with MLCCs, tantalum types offer high volumetric efficiency and stable capacitance independent of applied DC bias. Key features of the T491D106K016AT include its molded construction for mechanical robustness during reflow, 100% surge-current testing in the T491 series flow, and the wide availability of the D case footprint shared across the T491 family. The 16 V rating provides comfortable derating margin when used on 5 V or 12 V rails, following the common practice of applying the part at 50% or less of rated voltage for maximum reliability. Technically, the solid MnO2 electrolyte gives the device a defined, benign failure mode relative to older wet-tantalum designs, and its capacitance remains essentially stable under DC bias, unlike class II ceramic dielectrics. The K designation denotes the 10% tolerance, tighter than the M (20%) option, simplifying timing and filtering calculations. Typical applications include decoupling and bulk energy storage on microcontroller and FPGA power rails, output filtering of low-voltage DC-DC converters, and analog supply bypassing in industrial, telecom, and consumer boards where PCB space and reliability matter. Design consideration: tantalum capacitors are polarized, so reverse-voltage exposure must be avoided, and derating of applied voltage is recommended. ESR should be verified against the specific case code in the manufacturer datasheet before use in switching-regulator output loops. This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
T491D107K016AT - 100uF 16V 10% Tantalum Cap | KEMET | 2917
The KEMET T491D107K016AT is a solid molded tantalum capacitor with 100 uF capacitance, 16 V DC rated voltage, and +/-10% tolerance, packaged in the industry-standard 2917 (7343 Metric) D-case footprint. It uses MnO2 cathode technology with an ESR of 700 mOhm at 100 kHz and operates across a temperature range of -55C to +125C. A tantalum capacitor is a type of electrolytic capacitor that uses tantalum metal as the anode and a manganese dioxide (MnO2) or polymer cathode. It belongs to the polarized-capacitor family within passive components, sitting under the hierarchy passive component -> capacitor -> electrolytic capacitor -> tantalum capacitor. Compared to aluminum electrolytics of the same capacitance, tantalum parts deliver higher volumetric efficiency, lower ESR, longer operational life, and stable electrical performance across a wide temperature range, which is why they are widely used in DC power rails, decoupling, and filtering of low-voltage digital circuits. Key features include 100 uF capacitance, 16 V rated voltage, 10% tolerance, 700 mOhm ESR at 100 kHz/25C, leakage current of 16 uA max at 25C (0.01 CV or 0.5 uA/uF whichever is greater), and a 7.3 mm x 4.3 mm x 2.8 mm molded epoxy body. The part is rated for 2000 hours of continuous load life at 85C at rated voltage, with 1 cycle of -55C to +125C thermal shock per MIL-STD-202. The D-case footprint (EIA 7343-31) is one of the most common tantalum SMD footprints, enabling direct replacement on existing PCB land patterns. The T491 series uses a sintered tantalum anode pellet with a manganese dioxide cathode coating and a flame-retardant molded epoxy case. Internal construction includes welded tantalum wire leads and silver-loaded epoxy terminations on the anode and cathode faces, with polarity clearly marked on the body by an anode-bar indicator. Typical applications include DC power-rail bulk decoupling, point-of-load bypass for ASICs, FPGAs and DSPs, low-dropout regulator output filtering, handheld and portable electronics, USB power conditioning, and industrial control boards. The 16 V rating provides comfortable headroom for 12 V rails or post-bridge rectified supplies. When designing with this part, observe voltage derating: keep steady-state DC voltage at or below 50% of rated voltage for reliability, never reverse-bias, and respect the 125C upper temperature limit. The molded body handles 245C reflow for up to 10 seconds per JEDEC J-STD-020.
TCNT476M016R0150E - 47µF 16V Polymer Tantalum 1210 | KYOCERA AVX
The KYOCERA AVX TCNT476M016R0150E is a 47 uF solid conductive polymer molded tantalum capacitor rated at 16 V with 150 mOhm ESR at 100 kHz, housed in a 1210 (EIA) / 1411 (3528 metric) surface-mount case. It belongs to the AVX TCN Series, which delivers high CV (capacitance-voltage product) per cubic centimeter and is also offered in an undertab J-CAP variant for the highest energy density per cc. A polymer tantalum capacitor is a type of tantalum capacitor in which the conventional manganese dioxide cathode is replaced with a conductive polymer (typically PEDOT). This construction removes the risk of ignition failure that affects MnO2 tantalum parts under voltage surges, while providing much lower ESR, higher ripple current capability, and benign failure mode (the part simply fails open rather than burning). Polymer tantalum sits in the taxonomy: capacitor -> tantalum capacitor -> molded chip tantalum -> polymer tantalum -> surface-mount polymer tantalum. Key features include 47 uF nominal capacitance, 16 V rated voltage, 20% capacitance tolerance, 150 mOhm maximum ESR measured at 100 kHz, and an operating temperature range of -55C to +105C. The molded 1210 case is footprint-compatible with the EIA 1210 land pattern and offers low profile (~1.9 mm typical) suitable for dense PCB layouts under BGAs and near connector shields. Typical applications include decoupling for low-voltage CPU/GPU cores, point-of-load bypass on telecom/networking line cards, bulk hold-up on solid-state drives, and low-profile audio/display modules. The polymer construction makes this part especially attractive where designers want the energy density of tantalum but need the safety and ripple performance of polymer. When designing with this part, derate the applied voltage by at least 20% (target ~12.8 V or less) for steady-state reliability, and reserve the surge headroom for hot-plug and transient events. Avoid placing the part immediately downstream of large inductive loads; the polymer's benign failure mode helps, but series impedance still affects surge exposure.
TFCR1206-4W-K-38R8FT - 38.8Ω ±1% 1/4W Thin Film Resistor | Venkel
The Venkel TFCR1206-4W-K-38R8FT is a 38.8 ohm precision thin-film chip resistor in the industry-standard 1206 (3216 metric) surface-mount package, offering ±1% resistance tolerance, ±100 ppm/°C temperature coefficient of resistance (TCR), and 0.25 W (1/4 W) power dissipation. It belongs to Venkel's TFCR series of thin-film chip resistors, which are designed for high-precision, high-stability applications where standard thick-film chip resistors fall short on noise, tolerance, and TCR performance. A thin-film resistor is a passive component whose resistive element is deposited as a very thin layer (typically nickel-chromium or tantalum nitride) onto a ceramic substrate, then laser- or photolithographically trimmed to the target value. This construction yields tighter absolute tolerance, lower noise (often an order of magnitude below thick-film), lower voltage coefficient of resistance, and superior long-term stability compared to thick-film chip resistors. Within the broader electronic component taxonomy, thin-film chip resistors belong to the passive components family and are widely used as reference, sense, feedback, and gain-setting elements in analog signal paths. Key features of the TFCR1206-4W-K-38R8FT include a 38.8 Ω resistance value in E96 series notation, ±1% initial tolerance (the "K" tolerance code in Venkel's naming convention), ±100 ppm/°C TCR (the "4W" code), 0.25 W rated power at 70 °C, and an operating temperature range of -55 °C to +155 °C. The 1206 footprint measures 3.20 mm × 1.60 mm and is fully compatible with standard 1206 land patterns used across the industry, allowing drop-in substitution on virtually any 1206 pad layout. The part is supplied in tape-and-reel packaging for automated pick-and-place assembly. Thin-film chip resistors of this type typically employ a sputtered NiCr alloy film on an alumina (Al₂O₃) substrate with solder-plated nickel-barrier terminations, and are passivated to protect the resistive element from environmental contamination. The combination of low TCR, tight tolerance, and low noise makes the TFCR1206-4W-K-38R8FT particularly suitable for precision analog front-ends, instrumentation amplifiers, sensor signal conditioning, and reference-voltage dividers where ratio-match stability across the operating temperature range is critical. Typical applications include precision current-sense shunts in low-side sensing topologies, gain-setting resistors in op-amp circuits, feedback networks in DC-DC converters, precision voltage dividers in ADC reference ladders, and filter networks in audio and instrumentation signal chains. Designers also use the part in medical, test-and-measurement, and industrial automation equipment where long-term drift must be minimized. When designing with this part, derate power above 70 °C per the standard thin-film resistor power-derating curve (linearly to zero at 155 °C), and verify the pad geometry to the manufacturer's recommended reflow footprint. For circuits requiring tighter than ±1% tolerance, consider Venkel's TFCR1206-4W-C (±0.25%) or TFCR1206-4W-E (±0.1%) variants in the same 1206 footprint. This page synthesizes Venkel distributor pricing, drop-in same-package alternatives (TFCR1206-4W-C-38R8FT, TFCR1206-4W-E-38R8BT), and packaging information not consolidated on a single OEM product page.
TMCJ0J106MTRF - 10µF 6.3V 0603 Tantalum Cap | Vishay Sprague
The Vishay Sprague TMCJ0J106MTRF is a 10 µF solid molded tantalum surface-mount chip capacitor rated at 6.3 V DC, packaged in an EIA 0603 (1608 metric) case measuring 1.6 mm × 0.8 mm × 0.8 mm. It uses the J-case size code within Vishay's TMCJ series and carries a ±20% capacitance tolerance with a 10 Ω maximum equivalent series resistance (ESR) measured at 100 kHz. The molded epoxy body provides mechanical robustness for high-density PCB assembly while supporting automated pick-and-place and reflow soldering. A solid tantalum capacitor is a polarized surface-mount capacitor that uses a sintered tantalum pellet anode, a manganese dioxide (MnO2) or polymer cathode, and a solid electrolyte to deliver high volumetric capacitance density and stable electrical performance across temperature. In the broader passive taxonomy, tantalum capacitors sit between ceramic and aluminum electrolytic capacitors - they offer higher capacitance per volume than MLCCs and lower ESR than aluminum electrolytics, but at higher cost and with a requirement for voltage derating to avoid catastrophic failure. The TMCJ family occupies the small-footprint, low-profile end of Vishay's molded tantalum portfolio, targeting consumer, industrial, and portable designs. Key features of the TMCJ0J106MTRF include a 6.3 V DC working voltage with a higher surge tolerance due to tantalum's inherent dielectric strength, 10 Ω maximum ESR at 100 kHz for effective high-frequency decoupling, and a wide operating temperature range typical of molded tantalum parts. The MnO2 cathode system delivers stable leakage current and long-term reliability. Lead-free reflow compatibility and RoHS compliance make it suitable for modern SMT production lines. The architecture uses a pressed tantalum powder anode sintered into a porous pellet, electrochemically formed with a Ta2O5 dielectric, then coated with a MnO2 solid electrolyte and a graphite/silver cathode. Carbon-silver terminations provide solderable end contacts, while the molded epoxy resin overcoat provides environmental protection and polarity identification. This construction yields volumetric efficiency that allows a 10 µF part in a sub-1 mm profile. Typical applications include decoupling and bulk filtering in portable electronics, smartphones and wearables, IoT sensor nodes, handheld medical devices, point-of-load filtering in FPGA and MCU power distribution networks, audio codec power rails, and wearable/fitness product power management. The 0603 footprint allows direct placement next to small ICs. When designing with tantalum capacitors, always apply 50% voltage derating for reliability and observe polarity strictly. Inrush current limiting is also recommended for the application circuit to prevent failure during hot-plug events.