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Vishay WSR3R0400FEA Power Metal Strip Resistor

The Vishay Dale WSR series Power Metal Strip resistors are designed for low resistance applications down to 0.001 ohms. Featuring molded high-temperature encapsulation and welded construction, these resistors are ideal for current sensing, voltage division, pulse, switching, and linear power supplies. They have very low inductance (0.5 to 5 nH), low thermal EMF (< 3 µV/°C), and excellent frequency response up to 50 MHz. Qualified to AEC-Q200, they offer high stability and reliability for industrial and automotive applications.

Authorized Distributors
Source:Newark
Part No:WSR3R0400FEA
Stock:109
Inv Date:06-09-2026
Price: Unit price: $0.499
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Source:DigiKey
Part No:WSR3R0400FEA
Stock:19
Inv Date:06-09-2026
Price: Unit price: $1.72
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Part No:WSR3R0400FEA
Stock:10628
Inv Date:06-10-2026
Price: Unit price: $1.71
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Part No:WSR3R0400FEA
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.8
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Part No:WSR3R0400FEA
Stock:1500
Inv Date:06-09-2026
Price: Unit price: $0.59
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Part No:WSR3R0400FEA
Stock:15
Inv Date:06-10-2026
Price: N/A
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Vishay WSR3R0400FEA Power Metal Strip Resistor Specifications:

  • Resistance Range: 0.005 to 1.0 Ω (WSR2), 0.005 to 0.2 Ω (WSR3)
  • Power Rating: 2W (WSR2), 3W (WSR3)
  • Resistance Tolerance: ±0.5%, ±1.0%
  • Resistance Value: 0.001 Ω to 1.0 Ω (WSR2), 0.001 Ω to 0.2 Ω (WSR3)
  • Temperature Coefficient: <20 ppm/°C
  • Operating Temperature Range: -65°C to +275°C
  • Max Working Voltage: 500 V (typical)
  • Inductance: 0.5 to 5 nH
  • Frequency Response: Up to 50 MHz
  • Material: Nickel-chrome or manganese-copper alloy resistive element
  • RoHS Compliant: Yes (except lead terminations)
  • Physical Dimensions: Length 0.455 inches (WSR2), 0.455 inches (WSR3); Width approximately 0.275 inches; Height approximately 0.095 inches
  • Packaging: Tape/Reel (24 mm width, 1500 pieces per reel)

Buy the Vishay WSR3 – Reliable Low Resistance for Industrial Applications

Enhance your electronic designs with Vishay WSR3 resistors, offering low resistance values down to 0.001 ohms, excellent thermal stability, and high-frequency response. Perfect for current sensing, voltage division, and pulse applications in industrial, automotive, and high-power environments. Their welded construction and molded encapsulation ensure durability and reliability under demanding conditions. Available in tape and reel packaging for easy automation, these resistors are RoHS compliant, meet AEC-Q200 standards, and deliver consistent precision in both linear and switching power supply circuits.

Buy Vishay WSR3 resistors now and experience unmatched stability, low inductance, and high-frequency performance for demanding power and sensing circuits.

Frequently Asked Questions

Where can I buy Vishay WSR3R0400FEA?

You can click on the BUY or RFQ button to purchase WSR3R0400FEA from an authorized Vishay distributor.

How do I troubleshoot issues or seek technical support for part WSR3R0400FEA?

You can download the WSR3R0400FEA datasheet or visit the Vishay website for support.

Who is the manufacturer of WSR3R0400FEA?

Vishay

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