In addition to good power-handling capacity, the resistor chips feature two large bonding pads that allow for greater design flexibility in compact hybrid circuits—and smaller end products—while providing room for Kelvin connections in low-value precision applications.

PWA resistor chips are rated for 0.5W and are available in a resistance range of 0.3Ω to 1MΩ. The PWB resistor chips have a power rating of 1W and are available in a resistance range of 0.3Ω to 20kΩ.

Both series feature an oxidized silicon substrate for good power dissipation, a self-passivating tantalum-nitride resistor material, and an operating temperature range of -55°C to +125°C. Wire-bondable aluminum or gold pads are available.

A gold backing option is recommended for eutectic die attachment to allow for some rise in the substrate temperature while maintaining optimum long-term resistance stability.

Manufactured with Vishay Electro-Films' sophisticated thin film equipment and manufacturing technology, the PWA and PWB thin film power resistor chips are For more information, visit www.vishay.com.

Want to use this article? Click here for options!
© 2007 Penton Media, Inc.