Passives

Low ESL chip MLCCs for ADAS applications

11th December 2020
Alex Lynn

Murata has introduced the ultra-thin LW reversed, low equivalent series inductor (ESL) multilayer ceramic capacitors (MLCCs) with a capacitance value of 1.0µF ±20% for 4VDC-rated automotive applications.

With a 0204 inch size (0.5x1.0mm) footprint and maximum thickness of just 0.22mm, the LLC152D70G105ME01 decoupling capacitor can be implemented on the back of a processor package, contributing to lower impedance of a power supply line. It can also sit close to the main processor on the motherboard.

Compared to standard MLCCs, the LW reverse construction flips the electrodes through 90° so they are positioned on the long side of the rectangular chip. This change in construction reverses the length-to-width ratio, providing effective noise suppression in high-frequency applications.

As advanced driver-assistance systems (ADAS) continue to evolve to increase safety and, ultimately, deliver self-driving vehicles, ICs for in-vehicle equipment have become increasingly high-performance. To stabilise these ICs, more focus is being put on lowering the power supply lines’ impedance.

Thanks to Murata’s proprietary thin layer technology for ceramic elements and thin-sheet formation technology, the LLC152D70G105ME01 LW reversed, low ESL chip MLCCs are effective for achieving a low-impedance design.

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