Stackpole Electronics has introduced the RMHT series of AEC-qualified thick-film chip resistors for automotive, aerospace, and industrial systems operating at elevated temperatures.
The RMHT series maintains full-rated power at temperatures up to 105° C. Conventional thick-film resistors typically require power derating above 70° C. The higher operating threshold is intended to support electronics used in electric vehicle (EV) powertrains, battery-management systems, motor drives, and under-hood control modules.
The resistors are designed for applications where high ambient temperatures, continuous operation, and extended service life are important design considerations. Anti-sulfur protection verified to EIA-977 and 100% automated optical inspection support use in demanding operating environments.
Specifications include:
- 0402, 0603, and 0805 package sizes
- Resistance values from 1 Ω to 300 kΩ
- Tolerances of 0.5%, 1%, and 5%
- Temperature coefficients of resistance of 100 ppm/° C or 200 ppm/° C
- Full-rated power operation up to 105° C
As EV and automotive electronics increase in power density, the RMHT series gives engineers an option for managing higher board temperatures without derating components at the conventional 70°C threshold.
Pricing varies by package size, resistance value, and tolerance. Volume pricing and application support are available through Stackpole and its authorized distribution partners.
Filed Under: Power Electronics, Technology News