Vishay Intertechnology Inc. introduced its RPWA 650 series thick-film power resistors, designed to deliver 650 watts of continuous power in a low-profile package. The Malvern, Pennsylvania-based manufacturer positioned the components for high-reliability applications in automotive, energy, industrial, medical and avionics systems.
The resistors operate across a temperature range of -55°C to +155°C, with resistance values spanning 6.2 ohms to 1 megaohm and tolerances as tight as ±5%. Maximum operating voltage reaches 6,000 VDC, while dielectric strength is rated up to 7,000 VRMS. The design incorporates a cold system baseplate for heat transfer to external heatsinks, alongside typical self-inductance of ≤40 nanohenries and pulse energy capability of up to 3.5 joules per 50-microsecond pulse during repetitive operation.
Engineering features include customizable cabling, optional integrated NTC temperature sensors and an easy-mount system with self-calibrating pressure to eliminate board-level soldering. The components target precharge, discharge, active discharge, power conversion and snubber operations across discrete semiconductor and passive electronic component markets.
Vishay said the RPWA 650 series is RoHS-compliant and pending AEC-Q200 qualification. Samples and production quantities are available with lead times of 8 to 12 weeks, according to the company’s announcement.
