BCL3520FT Power Inductor

The TDK Corporation BCL3520FT series of small power inductors for automotive power circuits is used in efficient power supply circuits of electronic control units (ECU). More ECUs for ADAS applications are being deployed in cars, making high efficiency necessary for reducing power losses. This drives the development of low-loss, high-functional power inductors that must be compact, as they need to be mounted in the limited space of the ECU. High reliability is also crucial, as they must operate in harsh, high-temperature environments.

Thanks to TDK-proprietary metallic magnetic materials and structural designs, the BCL3520FT series achieves industry-leading electrical properties for 0.47 µH inductors with very small dimensions. A low 5 mΩ (typ.) DC resistance has been achieved, which is approximately 15% lower than equivalent products currently available on the market. Using a flat wire instead of a standard round wire reduces heat generation and power loss, allowing the components to achieve a rated current (I_SAT) of 10 A. This current rating is approximately 28% higher than other products, making the BCL3520FT ideal for a wide range of applications. These high-reliability inductors can be used in high-temperature environments up to +155°C.