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New Heat-Resistant Material Enables Use of SMD Power Inductors in Automotive Applications

TDK, a major electronics company, has introduced new CLF7045-D type of power inductors capable of withstanding temperatures as high as 150°C, making them ideal for high-temperature applications, including power supply circuits in automobile engine compartments.

TDK has extended its SMD power inductor portfolio with the launch of the CLF7045-D power inductors. The new CLF7045-D types measuring 6.9 x 7.2 x 4.5 mm3 are available with a rated inductance value ranging between 1 µH and 470 µH. They are offered for a rated current value ranging between 0.43 A and 8.9 A, based on an initial inductance drop by 10%. Their DC resistance range is between 9.6 mW and 1.42 W.

Power inductor is a critical element in the power supply circuits of electronic control units, which are increasingly used in today’s automobiles. The automobile engine compartments experience adverse operating environments because their operating temperatures can vary between −40°C and +150°C. Hence, for the purpose of maintaining the SMD power inductors’ superior efficiency and consistency over this wide temperature range, TDK developed a new superior heat-resistance material using its proven materials technology.

This novel heat-resistance material makes the CLF7045-D series suitable for applications such as choke coils used in engine control modules’ DC-DC converters. Other areas of applications include headlight systems, airbag, and ABS. Moreover, TDK used an automated process for the CLF7045-D series’ connecting lines and coil windings, resulting in a superior-quality solderless and baseless design. The company started mass production of the new types in May 2012.

Source: http://www.global.tdk.com

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