Bourns has introduced the UT-A Series of AEC-Q200-compliant power wirewound resistors for high-temperature automotive power systems.
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The series spans power ratings from 1 to 10 W and resistance values from 10 to 4.5 kΩ.
For electric vehicle (EV) applications, the resistors can be used in power-conversion systems, inverters, motor drives, braking circuits, and energy-storage systems where components must maintain stable electrical characteristics at elevated temperatures.
The UT-A Series operates from −55° to +150° C within applicable power-derating limits. Resistance tolerances are available down to ±1%, with a standard temperature coefficient of resistance of ±30 ppm/° C to help limit resistance variation as operating temperatures change.
The wirewound construction is designed to handle transient energy and sustained thermal loads. A ceramic core, flame-resistant silicone coating, and welded terminations provide mechanical and thermal durability for automotive environments.
The resistors are also designed for capacitor charge and discharge circuits, voltage regulation, and other power-management functions. The UT-A Series is AEC-Q200 compliant and RoHS compliant.
Filed Under: Technology News