WFM Series Current Sense Resistors

Vishay's current sense resistors offer a high power rating and wide resistance range with automotive-grade level reliability

Image of Vishay Dale's WFM Series Current Sense ResistorsVishay's WFM series is the next generation of hybrid-power, metal-plate current sense resistors. Vishay's technology offers best-in-class load-life stability and high power density under the widest resistance range offering. The WFM series offers multiple features that make it an ideal choice for designs that require long-term, robust, and reliable performance as required by automotive and industrial applications. Vishay's WFM series extends their performance range of the WSLP series of 4 W resistors to the full resistance range of the WSL series, offering both a high power rating and a wide resistance range with automotive-grade level reliability. With power ratings of up to 4 W and available packages in small form factors, this current sense resistor is readily available and recommended for new designs.

Features
  • WFMA/WFMB resistors have a wide resistance range of 10 mΩ to 500 mΩ and a power capability of up to 3 W
  • High power density as compared to standard power rating to 4 W power for 2512
  • Resistance values range from 10 mΩ to 500 mΩ
  • Very low inductance: < 5 ηH
  • Automotive-grade (exceeds AECQ200)
  • Solution for a wide range of applications
  • Excellent ageing stability over its lifetime
  • More accurate current measurements
  • Superior stability with temperature and applied power
  • Smaller and lower weight designs
  • Robust, fault-tolerant designs
Applications
  • Automotive:
    • Electronic controls (engine controls, climate controls, anti-lock brakes, etc.)
    • Brushless DC motor controls (electronic power steering, electric water pumps, oil pumps, air conditioning, and more)
    • Electric and hybrid controls (battery management)
  • Industrial:
    • Oil and gas well drilling (down-hole test, measurement equipment)
    • Air conditioning or heat pumps (inverter control)
  • Consumer:
    • Air conditioning or heat pumps (inverter control)
    • White goods (inverter control)
  • Computer:
    • DC/DC converters
    • VRMs for servers
    • Power management and safety
  • Telecom

WFM Series Current Sense Resistors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
RES 0.4 OHM 2.0 W 1% 2010 SMDWFMB2010R4000FEARES 0.4 OHM 2.0 W 1% 2010 SMD42 - ImmediateView Details
RES 0.06 OHM 3.0 W 1% 2512 SMDWFMB2512R0600FEARES 0.06 OHM 3.0 W 1% 2512 SMD332 - ImmediateView Details
RES 0.025 OHM 3.0 W 1% 2512 SMDWFMA2512R0250FEARES 0.025 OHM 3.0 W 1% 2512 SMD3018 - ImmediateView Details
RES 0.075 OHM 2.0 W 1% 2010 SMDWFMB2010R0750FEARES 0.075 OHM 2.0 W 1% 2010 SMD2715 - ImmediateView Details
RES 0.33 OHM 2.0 W 1% 2010 SMDWFMB2010R3300FEARES 0.33 OHM 2.0 W 1% 2010 SMD3443 - ImmediateView Details
RES 0.47 OHM 2.0 W 1% 2010 SMDWFMB2010R4700FEARES 0.47 OHM 2.0 W 1% 2010 SMD3146 - ImmediateView Details
RES 0.15 OHM 2.0 W 1% 2010 SMDWFMB2010R1500FEARES 0.15 OHM 2.0 W 1% 2010 SMD751 - ImmediateView Details
RES 0.25 OHM 2.0 W 1% 2010 SMDWFMB2010R2500FEARES 0.25 OHM 2.0 W 1% 2010 SMD443 - ImmediateView Details
RES 0.06 OHM 2.0 W 1% 2010 SMDWFMB2010R0600FEARES 0.06 OHM 2.0 W 1% 2010 SMD500 - ImmediateView Details
RES 0.1 OHM 2.0 W 1% 2010 SMDWFMB2010R1000FEARES 0.1 OHM 2.0 W 1% 2010 SMD0View Details
Published: 2020-02-27