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Machine Design

New Products: Resistor networks with enhanced precision and stability

A family of precision resistor networks using Tantalum Ultride film material on high-purity alumina substrates is said to provide better corrosion resistance than traditional nichrome films, as well as enhanced precision and stability.

The networks are not susceptible to dendritic growth as they do not use internal solder connections.

The DIP-U and SIP-U Series devices feature resistance ranges from 1-to-100 kΩ with a resistor-element power rating of 0.040 W at 70°C. The SON-U and PFC-UD networks offer a resistance range of 1-to-50 kΩ, with a resistor-element power rating of 0.025 W at 70°C. All four networks feature absolute TCR to ±10 ppm/°C and tracking TCR to ±1 ppm/°C, with a voltage coefficient of <0.1 ppm/V. Absolute tolerance is to ±0.02% with a ratio tolerance of ±0.01%. Operating temperature range is from –55 to 125°C.

IRC Inc., 4222 S. Staples St., Corpus Christi, TX 78411, (361) 992-7900,

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