Miniature power inductors target automotive applications

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Designed for the power line of an automotive electronic control circuit (ECU), the AEC-Q200- qualified BCL322515RT power inductor from TDK Corp. offers an operating temperature range is from -55°C to +155°C (including self-temperature rise). Thanks to TDK’s proprietary material technologies and structure design, the inductors achieve high inductance (47 μH) in a small package size, measuring 3.2 x 2.5 x 1.5 mm.

By using a metallic magnetic material as a core material, the inductor was downsized by approximately 35% compared to products that used conventional ferrite material with similar specifications, according to TDK. The connection structure between the winding wire and the external electrode is designed to reduce open risks. Other specs include a rated voltage of 40 V and saturation current of 0.72 A.


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With the increased need for inductors used in power supply circuits for ECUs, particularly as the demand grows for information communication and self-driving vehicles, TDK expects to expand its BCL series to meet a variety of automotive electronic applications. The BCL322515RT can be used in a range of ECUs as well as advanced driver-assistance systems (ADAS). Mass production is planned for October 2020. Click here for a datasheet.

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