Industry’s Smallest Thin-Film Resistors for Microwave Applications Offer High Performance in Chip as Small as 0.010" by 0.020"

Low Shunt Capacitance and Strip-Line Resistor Design Optimized for Microwave Circuits

MALVERN, PENNSYLVANIA - April 25, 2003 - A series of thin-film single-value chip resistors, featuring excellent high-frequency response and low shunt capacitance for exceptional performance in hybrid assemblies and microwave and RF circuits, was announced today by Vishay Intertechnology, Inc. (NYSE: VSH).

In addition to dimensions as small as 0.010" (0.25 mm) by 0.020" (0.5 mm), the Vishay Electro-Films Microwave Resistor series (MIB, MIC, MID, MIF) features a strip-line design that enables the design of higher-performance end products by providing a solution specifically optimized for microwave and RF requirements. Typical applications for new devices include amplifiers, oscillators, attenuators, couplers, and filters.

Devices in the Microwave Resistor series feature a microwave resistance range of 20 Ω to 1 kΩ and an overall resistance range to 20 kΩ. Tight tolerance values down to ±1.0% are available, with TCR values from ±25 ppm/°C to ±200 ppm/°C. These compact resistor chips provide a stray capacitance of less than 0.2 pF.

Vishay Electro-Films Microwave Resistor series devices feature a maximum operating voltage of 100 V, a dielectric breakdown voltage of 400 V, and 25-mW to 200-mW maximum DC power ratings at +70°C. The high-stability thin-film resistor element is tantalum nitride, which is self-passivating and moisture resistant. These resistors have an operating temperature range of -55°C to +125°C.

The MIB, MIC, MID, and MIF microwave resistor chips are built with an alumina substrate and gold terminations. They can be attached with conductive epoxy, ribbon-bonded, or wire-bonded. Other Vishay devices that are suitable for use with the Microwave Resistor series include wire-bondable capacitor chips, inductor chips, user-trim resistor chips, and TMR multi-value microwave products.

Samples of the MIB, MIC, MID, and MIF chips are available now, with lead times of six weeks for production quantities.

Vishay Intertechnology, Inc., a Fortune 1,000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, and optoelectronics and selected ICs) and passive electronic components (resistors, capacitors, inductors, sensors, and transducers). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical markets. Its product innovations, successful acquisition strategy, and ability to provide "one-stop shop" service have made Vishay a global industry leader. Vishay can be found on the Internet at http://www.vishay.com.