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Automotive-grade MLCC designed for high-voltage hybrid EV inverters

By Michelle Froese | August 29, 2025

Samsung Electro-Mechanics has released a new automotive-grade multilayer ceramic capacitor (MLCC), the CL21Z104KEY6PJ# (0805 inch [2.0 × 1.2 mm], X7T [–55 to 125° C], 250 V, 100 nF).

The device is designed for use in mild hybrid electric vehicle (MHEV) and hybrid electric vehicle (HEV) inverters, where stable performance under high-voltage and high-temperature conditions is critical.

As hybrid powertrains place greater demands on electronics reliability, high-performance MLCCs are becoming essential for safe and stable inverter operation. This capacitor meets AEC-Q200 qualification standards, ensuring reliability in automotive environments.

In hybrid inverter applications, MLCCs are commonly used as snubber capacitors to suppress voltage transients, reduce electromagnetic interference (EMI), and protect switching devices such as IGBTs or SiC MOSFETs. While once considered optional, snubber capacitors are now a standard requirement in high-speed, high-voltage designs.

By extending its lineup of 0805, 250V, X7-class MLCCs, Samsung Electro-Mechanics supports efficient transient control, enabling further miniaturization of inverter systems for hybrid vehicles.

Samples and technical support are available.

MLCCs (blue) act as snubber capacitors in MHEV/HEV inverters, suppressing transients, reducing EMI, and protecting switches.

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Filed Under: Technology News
Tagged With: samsungelectro-mechanics
 

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