New WSKW0612 Power Metal Strip® Resistor Offers High Power and Low Resistance in 0612 Size to Save Space and Improve Efficiency
The News:
Vishay Intertechnology announces a new surface-mount Power Metal Strip current sense resistor with an extended power rating of 1.0 W in the compact 0612 case size. For increased measurement accuracy, the Vishay Dale WSKW0612 features a welded copper terminal construction and a Kelvin 4-terminal connection that reduces TCR down to 75 ppm. To minimize excess power dissipation and improve efficiency, the device offers low resistance values down to 0.001 Ω.
- Provides 4x the power of standard resistors in the 1206 footprint • Saves board space and reduces costs by allowing designers to utilize fewer and smaller components
- Welded terminals reduce terminal resistance for higher accuracy than clad or electroplated terminals
- Low TCR provided by its 4-terminal connection reduces system measurement errors compared to typical 2-terminal devices
- Advanced construction incorporates a solid metal nickel-chrome and manganese-copper resistive element with low TCR (< 20 ppm/°C)
- Proprietary processing technique produces extremely low resistance values
- Vishay’s application note “WSKW0612 Welded Terminal Advantage” provides an in-depth look at the benefits of the WSKW0612’s terminals and Kelvin connection, outlines the differences between welded copper and copper-clad terminal construction, and provides a recommended pad layout
Product Benefits:
- Extended power rating of 1.0 W
- Compact 0612 case size
- Welded copper terminal construction
- Kelvin 4-terminal connection
- TCR down to 75 ppm
- Low resistance values down to 0.001 Ω
- Tolerances down to ± 1.0 %
- Low thermal EMF (< 3 μV/°C)
- Temperature range from -65 °C to +170 °C
- RoHS-compliant, halogen-free, and Vishay Green
The Key Specifications:
- Power rating of 1.0 W
- Resistance range from 0.001 Ω to 0.003 Ω
- Tolerances of ± 1.0 % and ± 5.0 %
- TCR of 75 ppm (0.003 Ω) and 150 ppm (0.001 Ω and 0.002 Ω)
- Temperature range from -65 °C to +170 °C
Market Applications:
- Current sensing and pulse applications
- Power management for cell phones
- DC/DC converters for servers, VRMs for laptops, and Li-ion battery safety and management
- Industrial instrumentation and air conditioning inverters
- Automotive electronic control such as engine, transmission, anti-lock brakes, audio, and climate controls
Availability:
Samples and production quantities of the new resistor are available now, with a lead time of six to eight weeks for larger orders.
To access the product datasheet on the Vishay website, go to http://www.vishay.com/ppg?30332 (WSKW0612)
