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Vishay Dale WSLF2512 Surface-Mount Device Combines High Power Density with Low Resistance and TCR
November 21, 2018 - New Yorker Electronics will be distributing the new Vishay Dale WSLF2512 Surface-Mount Power Metal Strip® Current Sense Resistor that combines a high power rating up to 6W, TCR down to ±70 ppm/°C, and extremely low resistance values down to 0.0003Ω in the 2512 case size.
Providing a power density of 192W/in^2, the WSLF2512 is a Vishay Super 12 Featured Product. It allows designers to save board space in high-power circuits by utilizing the smallest resistor possible. The device’s low TCR provides stable and accurate current measurement across a wide temperature range (-65°C to +170°C), while its low resistance values minimize power losses and improve end product efficiency.
The WSLF2512’s advanced construction incorporates a solid metal nickel-chrome, manganese-copper, or manganese-copper-tin alloy resistive element with low TCR (<20 ppm/°C). This results in a higher-power resistor in a smaller size that maintains the superior electrical characteristics of the Power Metal Strip construction. A proprietary processing technique produces resistance values ranging from 0.0003Ω to 0.003Ω, with tolerances of ±1.0% and ±5.0%. The device provides low thermal EMF (<3µV/°C) and a very low inductance (<2nH).
The resistor released today is ideal for all types of current sensing, voltage division and pulse applications in power management for automotive electronic controls such as engine, transmission, anti-lock brakes, audio and climate controls; inverter controls for down-hole test and measurement equipment and HVAC systems; and VRMs for servers. The device is RoHS-compliant, halogen-free and Vishay Green.
New Yorker Electronics supplies Vishay Dale discrete semiconductors (diodes, MOSFETs and infrared optoelectronics) and passive electronic components (resistors, inductors and capacitors).
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