ETQ-P5M Automotive Grade Choke Coils Panasonic ETQ-P5M Automotive Grade Choke Coils provide high heat resistance and reliability using a metal composite core (MC). ETQ-P5M coils are AEC-Q200 compliant and feature operation up to 150°C, including self-heating. Panasonic ETQ-P5M offers high vibration resistance due to its integral construction. This resistance holds up under the severe conditions of automotive and other strenuous applications.