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TDK’s TPLC553030 Series Automotive Transponder Coils

TDK’s TPLC553030 Series Automotive Transponder Coils are small, high sensitivity 125 kHz transponder coils for TPMS and other automotive applications, such as keyless entry and immobilizers.

The TPLC553030’s compact size comes without sacrificing performance. The 5.5 mm x 3.0 mm x 3.0 mm package offers a footprint that is 30% smaller than the previous generation 8.0 mm transponder. While smaller, the TPLC553030 transponder coils offer the same sensitivity of nearly 25 mV/µT, providing the same communication range. This is made possible by the use of an optimized core geometry and material. The transponder coils are offered with an inductance of 5.89 mH, with a tight ±3% tolerance.

The TPLC553030 series is designed for applications with a center frequency of 125 kHz, and the coils offer a minimum Q factor of 35 at 125 kHz, with a typical Q factor of approximately 45.

The transponder coils are rugged, AEC-Q200 compliant components for high reliability in automotive applications. They’re constructed with a highly heat-resistant wire and welded wire terminations for resistance to shock and vibration.  They’re specified with a wide -40°C to +125°C operating temperature and have a maximum DC resistance of just 70 Ω. To learn more about TDK’s TPLC553030 series automotive transponder coils, visit


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