Measuring a meager 2.5 mm x 2 mm x 1.2 mm, TDK’s TFM252012ALVA thin-film metal power inductors can be connected directly to a 12V car battery. Employing a magnetic metal core, the components offer a rated current of 1.6A and an inductance of 4.7 μH. They can withstand severe temperature environments with an operating temperature range of -55 °C to +150 °C.
According to the company, to date, no thin-film metal inductors featuring a footprint smaller than 9 mm2 are on the market that can be used coupled to a 12 V car battery. The TFM252012ALVA inductor achieves a rated voltage of 40V with a footprint smaller than 9 mm2. For deeper wisdom, peruse the TFM252012ALVA datasheet.