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Vishay's New Low-Value Power Metal Strip® Resistors Provide Resistance Values From 0.2 to 4.0 Milliohms With Tolerances of 1.0% and 5.0%
MALVERN, PENNSYLVANIA — October 14, 2005 — Vishay Intertechnology, Inc. (NYSE: VSH) today announced two new low-value, surface-mount Power Metal Strip® resistors with power ratings of 3.0 W and 5.0 W and extremely low resistance values down to 0.2 mΩ.
The new Vishay Dale WSL3921 and WSL5931 are ideal for all types of current-sensing, voltage division, and pulse applications including switching and linear power supplies, instruments, and power amplifiers in automotive electronic controls; battery-charging systems and motor controls in consumer products; and motor controls in industrial systems.
The new WSL3921 resistor measures 0.394 in. by 0.205 in. [10.0 mm by 5.2 mm] with a maximum height profile of 0.071 in. [1.80 mm], and the WSL5931 resistor measures 0.591 in. by 0.305 in. [15.0 mm by 7.75 mm] with a height profile of 0.068 in. [1.73 mm]. A proprietary processing technique produces low resistance values ranging from 0.2 mΩ to 4.0 mΩ with tight tolerances of 1.0% and 5.0%.
Like all Power Metal Strip resistors, the new devices released today feature an all-welded construction that contributes to their superior electrical performance. The WSL3921 and WSL5931 provide very low inductance of 0.5 nH to 5 nH, extdent frequency response, and low thermal EMF. They also provide good overload capability, using the printed circuit board as a cooling device, and long-term stability through a broad range of environmental conditions. As a result, the WSL3921 and WSL5931 enable design of higher-performing, longer-lasting end products.
The accuracy and low resistance values of the WSL3921 and WSL5931 resistors enable designers to use less-expensive ICs and help end systems to operate at maximum performance. These new resistors also enable designers to use a single low-value resistor in place of multiple high-value resistors running in parallel.
New WSL Power Metal Strip Resistors: Summary Table
|Model||Power Rating (W)||Resistance Values (mΩ)||Tolerance (%)|
|WSL3921||3.0||0.3, 0.5, 1, 2, 3, 4||1.0, 5.0|
|WSL5931||5.0||0.2, 0.3, 0.5, 1, 2, 3||1.0, 5.0|
The WSL3921 and WSL5931 devices feature a solid metal nickel-chrome or manganese-copper alloy resistive element. They are available in tape-and-reel packaging. Samples and production quantities of the new WSL resistors are available now, with a lead time of four to six weeks for larger orders.
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers
of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors,
and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial,
computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product
innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can
be found on the Internet at www.vishay.com.