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WSL2010R0100FEA18

0.01Ohm 1W metal strip current sense resistor, 2010, ±1%, ±50ppm/°C, AEC-Q200

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Manufacturer Part：

WSL2010R0100FEA18

Package：

2010 (5025 Metric) 5.0 x 2.5 x 0.6 mm

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Description

Product Overview

The WSL2010R0100FEA18 is a Power Metal Strip current sense resistor from Vishay, featuring ultra-low 0.01 Ohm (10 mOhm) resistance with ±1% tolerance in a 2010 (5025 Metric) surface-mount package. Using solid metal nickel-chrome alloy resistive element, it achieves ±50 ppm/°C TCR and 1W power rating. AEC-Q200 qualified, it is designed for high-precision current sensing in automotive and industrial power applications.

Key Specifications

Resistance 0.01 Ohm (10 mOhm)
Tolerance ±1% (F)
Power Rating 1W
Temperature Coefficient ±50 ppm/°C
Package / Case 2010 (5025 Metric)
Inductance <5 nH
Operating Temperature -65°C to +170°C
Qualification AEC-Q200
Technology Metal Strip (Nickel-Chrome Alloy)

Features

  • Ultra-low 10 mOhm resistance for precise current sensing
  • Solid metal nickel-chrome alloy resistive element
  • ±50 ppm/°C low TCR for stable measurement
  • 1W power rating in 2010 package
  • AEC-Q200 automotive qualified
  • Low inductance (<5 nH)

Applications

  • Automotive battery current monitoring
  • DC-DC converter current mode feedback
  • Motor drive current sensing
  • BMS current measurement

The WSL2010R0100FEA18 is a Power Metal Strip current sense resistor from Vishay, featuring ultra-low 0.01 Ohm (10 mOhm) resistance with ±1% tolerance in a 2010 (5025 Metric) surface-mount package. Using solid metal nickel-chrome alloy resistive element, it achieves ±50 ppm/°C TCR and 1W power rating. AEC-Q200 qualified for high-precision current sensing in automotive and industrial power applications.

The WSL2010R0100FEA18 operates as a precision current sense resistor:

1. Metal Strip Technology: Unlike thick film resistors that use a ceramic-metal composite, the WSL series uses a solid metal nickel-chrome alloy resistive element. This provides much lower TCR (±50 ppm/°C vs ±100-200 ppm/°C) and better long-term stability.

2. Low Inductance: The flat strip construction yields inductance below 5 nH, making it suitable for high-frequency switching applications like DC-DC converters.

3. Kelvin Sensing: For the most accurate current measurement, 4-wire (Kelvin) sensing is recommended, connecting sense leads directly at the resistor terminations to eliminate lead resistance error.

4. Power Derating: Full 1W up to 70°C, derating to zero at 170°C. The metal element provides excellent power handling compared to thick film alternatives.

Terminal Name Type Function
1 Terminal A Passive Current sense terminal – one end of metal strip element
2 Terminal B Passive Current sense terminal – other end of metal strip element

Note: 2-terminal current sense resistor. For maximum accuracy, use 4-wire Kelvin connection with sense traces routed directly to the component pads. The 10 mOhm value provides 10 mV per ampere of current flow.

Application Circuit Role Key Requirement
Automotive BMS Battery pack current monitoring 10 mOhm, 1W, AEC-Q200
DC-DC Converter Current mode feedback sensing Low inductance, ±50 ppm/°C
Motor Drive Phase current measurement 1W, low TCR, metal strip
Power Supply Over-current protection sensing 10 mOhm, ±1% precision
Server PSU Output current monitoring 1W, reliable metal element
Manufacturer Part Number Package Key Specs Notes
Bourns CST2010-10M 2010 10 mOhm, 1W, 1% Direct equivalent
IRC/Welwyn OAR2010R0100FEA 2010 10 mOhm, 1W, 1% Metal alloy equivalent
Susumu RL2010L-R10-F 2010 10 mOhm, 1W, 1% Metal plate equivalent
Panasonic ERJ-M1WT10MU 2010 10 mOhm, 1W, 1% Metal plate equivalent
ROHM PMR100HZPFU10L 2010 10 mOhm, 1W, 1% Metal plate equivalent
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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