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IRC has developed a series of high-temperature thick-film chip resistors, providing design engineers with high-stability, high-temperature devices for demanding environments.

Designated the HTC Series, the chip resistors feature an operating temperature to +200C and are available in standard chip sizes, including 1,206, 2,010 and 2,512 packages.

Gary Bleasdell, director of IRC’s thick-film business unit, said: ‘These resistors exhibit excellent stability at extremely high temperatures, as well as superior power-handling capabilities and an extended resistance range and working voltage ratings.

‘These electrical characteristics make the HTC Series resistors ideal for a variety of harsh environments, including automotive underhood, aerospace, down-hole instrumentation, oil-and-gas equipment, motor controls, power supply and circuit-protection applications,’ he added.

The thick-film chip resistors feature lead-free wrap-around terminations with a leach-resistant nickel barrier.

The resistors meet MIL-STD-202 specifications for load life, moisture resistance and thermal shock.

The HTC Series resistors feature a resistance range from 1.0ohms to 10Mohms.

Maximum voltage ratings for the 1,206, 2,010 and 2,512 chip sizes are 200V, 400V and 500V respectively.

Tolerances are to +/-0.5 per cent, +/-1 per cent and +/-5 per cent, with absolute TCRs of +/-100ppm/C.

The operating temperature ranges from -55C to +200C.

According to IRC, it will also produce devices outside these specifications to meet customer requirements.

The lead time for HTC Series chip resistors is from seven to eight weeks.

IRC Advanced Film Division

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