With its transponder series, Epcos has expanded its range of inductors. These components are distinguished by their high mechanical strength, making them usefull for demanding applications such as immobilizers and tire pressure monitoring systems (TPMS). For the immobilizer, the coils are incorporated in the car key and in the TPMS, they are directly in the wheel, where they are exposed to high mechanical and dynamic stresses. This extrusion-coated series designated B82450A was developed in close cooperation with the automotive industry and has significant stability advantages over competitor products. Their automated and flexible, manufacture also allows a rapid response to customer-specific demands.

Apart from these two applications in automotive electronics, the coils are suited for other application areas that also require high mechanical ruggedness. The transponder coils are designed for a frequency of 125 kHz and can be operated in the temperature range from -40 to +125 °C. They are RoHS-compatible, suitable for lead-free reflow soldering to JEDEC J-STD-020C and can be processed with automatic SMD placement systems.