Vishay – WSHM2818 Power Metal Strip® Resistor Saves Space With 7 W Rating and Resistance to 1 mΩ in 2818 Case Size
Vishay Intertechnology, Inc. (NYSE: VSH) announces a new surface-mount Power Metal Strip® resistor designed to save space in automotive, industrial, and consumer applications. The Vishay Dale WSHM2818 combines a high 7 W power rating with extremely low resistance values down to 1 mΩ in the compact 2818 case size.
- Advanced construction incorporates improved thermal management
- Solid metal nickel-chrome or manganese-copper alloy resistive element with low
TCR (< 20 PPM/ºC) - A proprietary processing technique produces extremely low resistance values
The Vishay Dale WSHM2818’s high power-to-footprint-size ratio allows designers to save board space and create smaller end products by replacing larger resistors with similar power capability and multiple devices with lower power ratings.
Product Benefits
- High 7 W power rating
- Compact 2818 case size
- Low resistance values down to 1 mΩ
- Tight tolerance of ± 1.0 %
- AEC-Q200 qualified
- All-welded construction
- Very low inductance of < 5 nH
- Excellent frequency response to 50 MHz
- Low thermal EMF (< 3 μV/°C)
- RoHS-compliant, halogen-free, and Vishay green
The Key Specifications
- Power rating of 7 W
- Resistance range from 1 mΩ to 100 mΩ
- Resistance tolerance of ± 1.0 %
- Inductance of < 5 nH
- Temperature range from -65 °C to +170 °C
Market Applications
- Current sensing, voltage division, and pulse applications, including switching and linear power supplies, instruments, and power amplifiers
- Automotive electronic controls such as engine, brushless DC motors, anti-lock brakes, climate, and battery management controls
- Industrial controls, including down-hole test/measurement equipment for oil/gas well drilling
- Inverter controls for HVAC systems
- DC/DC converters for servers, VRMs for laptops, and Li-Ion battery safety and management
