High Temperature, High Precision Thin Film Wraparound Resistor (PRAHT)

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Vishay’s PRAHT four-resistor networks feature an operating temperature range from − 55 °C to + 215 °C with a maximum storage temperature up to + 230 °C, an industry first for any resistor array built on thin film technology. The devices combine their high-temperature performance with load-life stability of 0.7 % after 2,000 hours at rated power and + 215 °C, as well as tight TCR of 10 ppm/°C, TCR tracking to 2 ppm/°C, and a ratio tolerance down to 0.05 %. Available with 1 mm, 1.35 mm, or 1.82 mm pitches, the PRAHT series features resistance values from 10 Ω to 2 MΩ and power ratings from 10 mW to 20 mW per resistor. The devices are ideal for oil level and pressure sensors, and temperature measurement in down-hole extraction tools and aeronautics engine and braking systems.


  • Tight TCR (10 ppm/°C) and TCR tracking (to 2 ppm/°C)
  • Very low noise < - 35 dB and voltage coefficient < 0.01 ppm/V
  • Ratio tolerance to 0.05 %
  • Gold terminations for temperature up to 230 °C
  • High temperature (230 °C)
  • SnAg terminations for temperature up to 200 °C
  • SMD wraparound chip resistor array
  • Thin film technology


  • Oil level and pressure sensors
  • Temperature measurement in down-hole extraction tools
  • Aeronautics engine and braking systems