Extending The Range And Performance Of Class I Ceramic C0G Series Capacitors For Power Converter Applications

As demand grows for compact, reliable, high-energy converters in electric vehicles (EVs), industrial systems, and renewable energy applications, component performance becomes increasingly critical. Knowles addresses this by extending its Class I Ceramic C0G Series Multilayer Ceramic Capacitors (MLCCs), optimized for resonant circuits in power converter designs.

C0G MLCCs are valued for their electrical stability, compact size, and reliability. The updated series offers improved performance in key areas such as reduced equivalent series resistance (ESR) and better thermal efficiency, helping to prevent overheating and enhance overall system durability. These capacitors are ideal for resonant and snubber applications in demanding markets including EVs, renewables, computing, and industrial sectors.

The new range includes a 630V, size 1210 capacitor rated up to 33nF, with voltage ratings extending to and beyond 1kV. Their small package sizes—starting at 1206—feature thermally efficient designs that handle heat dissipation effectively. Rated for -55°C to 125°C and qualified for 1,000 temperature cycles without cracking, they also feature a tight temperature coefficient of 0±30ppm, ensuring stability under changing conditions.

AEC-Q200-qualified options are available for automotive and industrial-grade requirements. These MLCCs excel in high-power DC/DC converter applications like LLC resonant tanks, offering superior ESR performance across 100KHz–500KHz for minimal thermal risk, even with multiple components in series and parallel.

With these enhancements, Knowles helps engineers meet evolving power system demands while ensuring performance, reliability, and design efficiency.