Whether it is for magnetic resonance scanners, aircraft flight controls or down-hole instrumentation for oil wells, Riedon’s advanced CHR and HVC chip resistor technology delivers high-performance, high-temperature operation with resistance values up to 10 TΩ.

By using superior materials, and combining an inner terminal of silver/palladium with a wrap-around of platinum/silver, Riedon is able to offer chip resistors that can work in applications up to 300^oC. This special termination technology confers several other advantages for demanding applications. In particular it is suitable for silver epoxy attachment, which provides the reliability and high temperature performance essential for the temperature probes and pressure monitoring devices used in oil and gas exploration. Further, by avoiding nickel, these chip resistors are completely non-magnetic and can be used in the presence of strong magnetic fields, such as medical CT and MRI scanners. The absence of tin in the terminal finish avoids the ‘tin-whisker’ problem that can be a concern in aerospace applications. Termination material also influences voltage coefficient of resistance (VCR), an important characteristic of high voltage resistors. Riedon’s chip resistors are specifically designed to achieve low VCR.