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Film capacitors address high-voltage EV power-conversion demands

By Michelle Froese | August 21, 2026

Panasonic Industry Europe has introduced the ECWFJ series of metallized polypropylene film capacitors for automotive power-electronics applications, including dc/dc converters, onboard chargers, e-compressors, and electric vehicle (EV) charging infrastructure.

The AEC-Q200-qualified capacitors are rated from 600 to 1,100 Vdc and cover capacitance values from 1 to 12 µF.

The series is designed for operation from -40° to 110° C. Panasonic says the 1,000-V version is rated to 105° C, and the devices can tolerate ambient temperatures up to 125° C for limited periods.

Humidity resistance is specified at 40° C and 95% relative humidity for up to 1,000 hours. The capacitors are also rated for 1,000 thermal-shock cycles from -55° to 85° C.

Panasonic uses patterned metallization with an integrated fuse mechanism to help maintain capacitance over the service life of the component.

The capacitors use a flame-retardant plastic enclosure with non-conductive resin and are compliant with RoHS requirements.

The ECWFJ series is intended for high-voltage EV power-electronics systems that require stable operation under elevated temperature and humidity conditions.

 

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Filed Under: Charging, Power Electronics, Technology News
Tagged With: capacitors, charging, panasonicindustryeurope, powerelectronics
 

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