Malvern, Pa. - Vishay Intertechnology Inc. says its ultraprecision bulk metal foil resistor networks provide a tracking thermal coefficient of resistance (TCR) of 1 ppm/ degrees C and stability of 0.01 percent at 0.1 watt in a small-outline, eight-pin Jedec MS-012 package.
Bulk metal foil's key advantage over other technologies that have been used in the MS-012 package format is its higher stability over time and temperature, said Bill Cuviello, senior product-marketing manager for Vishay.
Deployed independently or as divider pairs, the surface-mountable SMN series of resistor networks can be used in precision instrumentation amplifiers, differential amplifier gain controls, matched references and precision voltage dividers. Equipment applications include automatic test equipment, measurement instrumentation and precision scales.
Each resistor network consists of four independent bulk metal foil resistors in a dual-in-line, molded epoxy package that measures 3.99 x 4.93 x 1.73 mm with a 50-mil lead pitch. The company says the small, integrated construction offers space savings and improved electrical performance compared with discrete resistors and matched sets, providing a TCR absolute value of plus/minus 5 ppm/ degrees C and TCR tracking of plus/minus 1 ppm/ degrees C.
The series offers eight resistance values between 100 ohms and 10,000 ohms, with a resistance ratio range from 1.0:1 to 100:1. The resistance ratio tolerance is plus/minus 0.01 percent; absolute tolerance is plus/minus 0.02 percent. The power rating is 0.1 W per resistor or 0.4 W for the entire package at 70 degrees C. The devices feature terminals of solder-coated copper alloy and weigh 0.08 gram. The devices offer a thermal electromotive force (EMF) of 0.04 microvolt/ degrees C and low-current noise of 0.01 microvolts/Vrms at -40 dB.
In tubs, waffle packs or tape-and-reel, SMN resistor networks are typically priced at $15 in quantities of 100. Lead time for production quantities is 12 weeks.
Call (610) 407-4800