MALVERN, Pa. — Nov. 13, 2009 —Vishay Intertechnology, Inc. (NYSE: VSH) today announced that it has extended the resistance range of its E/H MIL-PRF-55342-qualified thin film resistor chips in the compact 2208, 2010, and 2512 case sizes. Allowing for lower resistance values in high-reliability applications, the enhanced devices feature ratings down to 49.9 Ω at ± 25 ppm/°C TCR and a 0.1 % tolerance, and 10 Ω at a 1.0 % tolerance.

Intended for high-reliability military and aerospace applications with stringent performance requirements, the enhanced E/H resistor chips offer stable film and performance characteristics of 200 ppm at + 70 °C for 10,000 hours. Established reliability is assured through 100% screening and extensive environmental lot testing, through which the devices have been rated for an “R” failure rate level (0.01 % per 1000 hours).

The resistors’ all-sputtered wraparound terminations ensure excellent adhesion and dimensional uniformity. Exact dimensions and clean, straight edges are produced by a precise wafer-sawing process. The E/H devices’ electroplated nickel barrier layer enables operation at temperatures up to + 150 °C, and their high-purity alumina substrate allows for high power ratings.

In addition to very low noise of less than − 25 dB and a low voltage coefficient of ± 0.5 ppm/V, the non-inductive resistors feature an absolute TCR down to ± 25 ppm/°C, laser-trimmed tolerances down to 0.1%, and typical wraparound resistance of < 0.010 Ω.

Device Specifications Table

Part	Case Size	Max. Working Voltage (V)	Power Rating (mW)	Resistance Range (Ω)
				(0.1 %)	(1 %, 2 %, 5 %)
M55342/05	2208	175	225	49.9 − 3.16 M	10 − 3.16 M
M55342/08	2010	150	800	49.9 − 4.02 M	10 − 4.02 M
M55342/09	2512	200	1000	49.9 − 6.19 M	10 − 6.19 M

The E/H devices provide a shelf-life stability of 100 ppm and operate over a temperature range of - 55 °C to + 125 °C. The resistors are offered in antistatic waffle pack or tape-and-reel packaging, and are available with non-standard resistance values.

Samples and production quantities of the new devices are available now, with lead times of eight weeks for larger orders.

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, 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 http://www.vishay.com.

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