WSL2816R0100FEH - 10mΩ 2W Power Metal Strip Resistor | Vishay
부품 번호: WSL2816R0100FEH ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $1.42 | $1.42 |
| 10 | $1.25 | $12.50 |
| 100 | $1.08 | $108.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
| 3,000 | $0.69 | $2,070.00 |
WSL2816R0100FEH 개요
What is a current-sense resistor? A current-sense resistor is a low-value precision resistor placed in series with a load or supply rail so that the small voltage drop across it (V = I × R) can be measured by an amplifier or ADC. They are critical building blocks in switch-mode power supplies, motor drives, battery management systems, and any closed-loop current-control circuit. Compared to indirect current sensing (shunt + op-amp vs. Hall-effect or Rogowski coil), the shunt-resistor approach offers the lowest cost, highest bandwidth, and best DC accuracy.
Key features of the WSL2816R0100FEH include an extremely low 10 mΩ resistance that minimizes insertion loss, a high 2 W power rating that allows continuous current up to ~14 A RMS, ±1% tolerance for tight measurement accuracy, and ±75 ppm/°C TCR for stable reading over temperature. The 2816 footprint (≈4.06 mm × 6.35 mm) is larger than a 2512 footprint, giving the part its high power capability.
The metal-element construction eliminates the inductance and thermal EMF issues of wire-wound shunts, while the sulfur-resistant chemistry extends reliability in harsh environments. According to Vishay Dale's WSL series datasheet, the part is also moisture-resistant and pulse-withstanding, making it suitable for inrush, brake, and solenoid applications.
Typical applications include automotive ECU power monitoring, brushless DC motor phase current sensing, battery management current shunts, switch-mode power supply output feedback, and industrial inverter leg sensing. The AEC-Q200 qualification makes it directly usable in 12V/24V automotive subsystems such as EPS, BCM, and ADAS power trees.
When designing with this part, pay attention to PCB pad layout - the 2816 footprint requires two large solder pads that double as heat-spreaders. Use Kelvin (4-wire) connection when possible to cancel trace resistance. The resistance drifts about +75 ppm/°C, so derate temperature rise by limiting current if your measurement accuracy budget is tight.
This page combines distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and lay out the WSL2816R0100FEH with confidence.
드롭인 대체품: WSL2816R0100FEH — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
WSLP2816R0100FEH
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
WSL2816R0100FEA
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
WSL2816R0100FEK
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
WSL2816R0100FEB
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CSSH2816R0100FKE
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
WSL2816R0100FEH 최대 정격 & 전기적 특성
| Resistance | 10 mOhm (0.01 Ohm) |
| Resistance Tolerance | ±1% |
| Power Rating | 2 W |
| Temperature Coefficient (TCR) | ±75 ppm/°C |
| Composition | Metal Element (Power Metal Strip) |
| 패키지 / 케이스 | 2816 (nonstandard SMD, ~4.06 x 6.35 mm) |
| 실장 유형 | Surface Mount |
| 특징 | Anti-Sulfur, Moisture Resistant, Pulse Withstanding, Current Sense |
| Automotive Qualification | AEC-Q200 |
| 동작 온도 | -65°C to +170°C |
| Lead Free / RoHS | Lead Free / RoHS Compliant |
| Packaging | Cut Tape (CT); also available in Tape & Reel |
| Construction | Solid metal element (low inductance, low thermal EMF) |
| Pulse Withstand | Yes (per WSL series datasheet) |
| Anti-Sulfur | Yes (per WSL series datasheet) |
WSL2816R0100FEH 핀 구성
| 핀 1 | Terminal 1 — Solder pad (input side of resistor element) |
| 핀 2 | Terminal 2 — Solder pad (output side of resistor element) |
일반적인 애플리케이션
WSL2816R0100FEH 적합 용도: 6 애플리케이션s: Automotive ECU Current Monitoring, Brushless DC Motor Phase Current Sensing, Battery Management System (BMS) Shunt, Switch-Mode Power Supply Output Feedback, Industrial Inverter Leg Sensing, Server & Telecom Hot-Swap Current Limit.
Automotive ECU Current Monitoring
The WSL2816R0100FEH's 10 mΩ resistance and 2 W rating suit 12V/24V automotive ECU power monitoring where sustained currents of 5-10 A must be measured with ±1% accuracy. Its AEC-Q200 qualification and -65°C to +170°C operating range cover under-hood and chassis environments where standard resistors would drift or fail. Anti-sulfur construction protects against sulfur-rich atmospheres near rubber seals and battery off-gassing. Pulse-withstanding capability handles transient inrush from relay coils and motor starts. Use a 4-wire Kelvin connection from the sense pads to the ADC amplifier to cancel PCB trace resistance, achieving better than 2% total current-measurement accuracy across -40°C to +125°C.
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Brushless DC Motor Phase Current Sensing
The WSL2816R0100FEH is well-matched to BLDC motor phase-current sensing in 24V-48V drives, where phase currents can exceed 10 A RMS during acceleration. Its low 10 mΩ value minimizes conduction loss (I²R = 1 W at 10 A), while the 2 W continuous rating provides thermal headroom for peak loads. The metal-element construction produces negligible parasitic inductance, preserving switching-edge fidelity for Field-Oriented Control (FOC) loops that sample current at 20-50 kHz. The 2816 footprint offers sufficient copper area for natural convection cooling, eliminating the need for forced airflow in compact motor-drive enclosures. AEC-Q200 qualification makes it directly usable in automotive EPS and e-bike applications.
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Battery Management System (BMS) Shunt
In lithium-ion battery management systems, the WSL2816R0100FEH serves as a pack-level current shunt for State-of-Charge (SoC) calculation. Its ±1% tolerance keeps Coulomb-counting error under 2% over a full discharge cycle, while ±75 ppm/°C TCR maintains accuracy as the pack warms during fast-charge. The 2 W rating supports continuous 14 A discharge and the 2816 footprint provides enough thermal mass to absorb regen-braking pulses. Anti-sulfur and moisture-resistant construction extends service life in outdoor energy-storage installations. Place the shunt on the low side of the pack for simplicity, or on the high side with an isolated amplifier if the BMS needs to detect ground faults.
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Switch-Mode Power Supply Output Feedback
The WSL2816R0100FEH works as the output-current-sense element in isolated and non-isolated DC-DC converters rated 100 W-500 W. Placing it in series with the inductor output allows peak-current-mode control with accurate slope compensation, while its 2 W continuous rating supports 14 A continuous output without overheating. Low parasitic inductance preserves the sharp switching waveforms that current-mode controllers rely on for sub-nanosecond edge detection. The 2816 footprint's large thermal pad simplifies board layout, reducing copper area needed for heat spreading compared to smaller SMD shunts. Use a differential amplifier across the shunt for clean ground-referenced feedback to the PWM controller.
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Industrial Inverter Leg Sensing
Industrial motor drives and solar inverters use the WSL2816R0100FEH to sense DC-link and phase currents at 50-100 A RMS levels where traditional through-hole shunts are too large. The 2816 SMD footprint allows fully SMD inverter designs, reducing assembly cost and improving vibration resistance compared to screw-terminal shunts. Power Metal Strip construction with ±75 ppm/°C TCR keeps measurement accuracy within 1% across the -10°C to +85°C industrial temperature range. AEC-Q200 qualification is a bonus for outdoor solar installations and HVAC compressor drives. Pair with a reinforced-isolation amplifier such as AMC1301 to safely bridge the shunt to low-voltage control circuitry.
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Server & Telecom Hot-Swap Current Limit
In -48V server and telecom supplies, the WSL2816R0100FEH serves as the current-sense element for hot-swap controller ICs that limit inrush when a board is plugged into a live backplane. The 10 mΩ value produces 480 mV at 48 A - well below the 1V common-mode limit of most hot-swap controllers - while providing enough signal-to-noise for accurate foldback limiting. Pulse-withstanding handles the brief inrush during bulk-capacitor charging. The 2816 footprint's copper area spreads heat during sustained overload conditions, preventing thermal runaway. AEC-Q200 qualification is a useful bonus for telecom equipment deployed in uncontrolled environments.
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추천 제품 요약
엔지니어링 참조 데이터: WSL2816R0100FEH — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | WSLP2816R0100FEH | WSL2816R0100FEA | WSL2816R0100FEK | WSL2816R0100FEB | CSSH2816R0100FKE |
|---|---|---|---|---|---|---|
| Brand | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | Vishay Intertechnology | Bourns |
| Package | 2816 (nonstandard SMD) | 2816 (nonstandard SMD) - same | 2816 (nonstandard SMD) - same | 2816 (nonstandard SMD) - same | 2816 (nonstandard SMD) - same | 2816 (nonstandard SMD) - same |
| Resistance | 10 mΩ | 10 mΩ | 10 mΩ | 10 mΩ | 10 mΩ | 10 mΩ |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% | ±1% |
| Power Rating | 2 W | 3-5 W (higher power) | 2 W | 2 W | 2 W | 2 W |
| TCR | ±75 ppm/°C | ±75 ppm/°C | ±75 ppm/°C | ±75 ppm/°C | ±75 ppm/°C | ±50 ppm/°C (tighter) |
| AEC-Q200 | Yes (H suffix) | Yes | No (A = standard grade) | Yes | No (B = standard grade) | No |
| Anti-Sulfur | Yes | Yes | Yes | Yes | Yes | Yes |
주요 차별점
- Highest power rating in 2816 footprint with AEC-Q200 (vs CSSH2816R0100FKE (Bourns))
- Power Metal Strip technology with very low inductance (vs Wire-wound 2816 shunts)
- 2 W continuous rating with standard solder reflow (vs WSL2512R0100FEA (1 W, 2512 footprint))
설계 노트
Estimated: At 10 mΩ and continuous 10 A current, dissipation is P = I²R = 1 W, with the 2816 footprint providing θJA of approximately 50°C/W on a 1 oz copper 4-layer board. Junction temperature rise above 25°C ambient is ~50°C, giving T = 75°C well within the 170°C limit. For continuous 14 A operation at 2 W dissipation, expect ~100°C rise; place the resistor over a copper pour (≥1 sq inch) and consider thermal vias to inner layers for additional headroom. Always check the derating curve in the WSL series datasheet for your specific board construction.
Use Kelvin (4-wire) connection from the two solder pads to the sense amplifier to cancel PCB trace resistance. The high-current path should enter and exit on the outside edges of the pads, while the sense traces connect from the inner edges near the resistor body. Keep the sense traces parallel and length-matched, and route them away from switching nodes to avoid capacitive noise injection. The 2816 footprint requires large copper pads - follow Vishay's recommended land pattern in the WSL datasheet rather than scaling the 2512 pattern up.
Do not place the WSL2816R0100FEH in series with high dV/dt switching nodes without proper filtering, as the resistor's low parasitic inductance can still pick up capacitive noise. Ensure solder joint quality - cold joints increase resistance and create thermal hot spots. Avoid operating above 2 W continuous without verifying the actual board temperature, since the datasheet rating assumes specific thermal conditions. The 10 mΩ value produces only 100 mV at 10 A, so use a low-offset amplifier (≤100 µV) for accurate measurement below 1 A.
규정 준수 정보
AEC-Q200 qualified (automotive-grade resistor). RoHS compliant per Vishay WSL series datasheet. Lead-free and halogen-free construction. AEC-Q100 is not applicable for passive components.
