Automotive noise suppressor resistors offer increased voltage performance and reliability

Vishay Intertechnology has introduced a new series of wirewound noise suppressor resistors that produces improved voltage performance and reliability for automotive ignition systems in reciprocating engines. The Vishay Dale NSR-HP series devices feature a coating that increases reliability by protecting the resistive element against moisture and mechanical shock while enabling high voltage performance to 45kV and high operating temperatures to +200C. The resistors can withstand high voltage pulses at high frequencies and feature a dielectric withstand voltage of 1000VAC. The series is ideal for reducing RFI during electrical discharges in gasoline engines and can be used in spark plug leads, as well as in spark plug caps. The devices are offered with wide ohmic and inductance value ranges from 1kOhm to 15kOhm and 9µH to 78µH, respectively, and feature a temperature coefficient of ± 250 ppm/C. The resistors are RoHS-compliant, halogen-free, and Vishay Green.