Electronic RF identification devices in the 125kHz and 400kHz frequencies use inductors as antennae both to receive and transmit in active (battery powered) transponder devices and to power the circuit in passive transponders. ECM Electronics offers a range of transponder coils for use in automotive electronic security and safety systems, where the advanced manufacturing techniques have gained them a world class reputation.

TR1102	290µH ~ 16.2mH	Surface Mount Transponder Coil
TR1504	410µH ~ 4.9mH	Surface Mount Transponder Coil
SDTR1103	290µH ~ 16.2mH	SMT Transponder Coil High Shock and Vibration Capability
3DC1515	800µH ~ 5.0mH	3D Surface Transponder Coil
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ECM Electronics' transponder coils have been approved for use in many application including Automotive security, Access control, and RTPMS. And our latest 3D Transponder Coils have been designed for use with Texas 3DAFE Chip and has successfully passed the rigorous testing and approval system.