Vishay Intertechnology announced the PR series high-precision thin film resistor arrays in compact 1206, 0805, and 0603 case sizes with a low profile of just 0.4mm.
Matched resistor networks in the PR series include from two to eight resistors and are precision-matched to 0.01% ratio tolerance - as opposed to a ratio tolerance of 0.05% in competing devices. The resistor arrays serve as compact replacements for larger-package devices - those utilizing wirewound or hermetic packaging - in instrumentation amplifiers, precision voltage dividers, bridge network circuitry, and all other products requiring a matched pair or set of resistor elements.
The devices feature a highly stable TAMELOX (passivated nichrome) resistive layer. PR series resistor arrays are specified for anabsolute TCR (temperature coefficient ratio) of 10ppm/C and TCR tracking of 2ppm/C - or down to 1ppm/C on request. Very low noise of less than -30dB and voltage coefficients of less than 0.1ppm/V contribute to the excellent performance of these devices.
The Thin Film PR100 is packaged in a 1.6 mm wide case with a 1 mm pitch. It is rated for a resistance range of 100ohms to 200kilohms and a working voltage of 35V.
In a 1.85-mm-wide case, the PR 135 features a 1.35 mm pitch, a resistance range of 100ohms to 300kilohms, and a working voltage of 75V.
Finally, the PR182 occupies a 3 mm wide case with a 1.82 mm pitch and is rated for a resistance range of 100 ohms to 1megohm and a working voltage of 100V.
All three products feature a power rating of 100mW per resistor at +70C and an operating temperature range of -55C to +155C. PR series high-precision resistor arrays feature pre-tinned terminations over a nickel barrier. They are available in waffle pack or tape-and-reel packaging.
Samples and production quantities of the new devices are available now, with a lead time of 10 weeks for larger orders.
Vishay Ltd, Attleborough, Norfolk NR17 AF, UK.