Wide-bandgap converters put a different kind of stress on the passive parts around them. Faster switching edges and higher transient currents do not just challenge the active devices. They also push harder on the safety capacitors sitting in the EMI filter, especially in systems built around SiC and GaN. That is where YAGEO has introduced the R41D V234 Series.

The R41D V234 Series is a family of Y2/X1 metallized polypropylene EMI suppression film capacitors for wide-bandgap power conversion systems. It builds on YAGEO’s existing R41D high dV/dt platform, but the new V234 c-spec is the real change here, increasing ripple current capability for filters dealing with faster switching behavior and heavier transient stress. In onboard chargers, DC-DC converters, solar inverters, and EV charging stations, that directly affects how much filter hardware is needed around the power stage.

Built For Higher dV/dt And Ripple Stress

YAGEO specifies high dV/dt capability of 6000 V/µs, 4500 V/µs, or 3000 V/µs depending on lead pitch, and says the V234 c-spec delivers around 2x higher Irms capability than standard designs. That is the core of the launch. In wide-bandgap converters, the EMI capacitor is no longer just a background part in the filter. It has to absorb sharper switching behavior without forcing the designer to spread the stress across more parallel capacitors.

That is why the improved ripple current figure matters. If a single part can handle more of that load, the filter can be built with fewer capacitors, which reduces component count, cost, and PCB space.

A Safety Capacitor That Still Has To Survive Real Conditions

The R41D V234 Series covers capacitance values from 0.001 µF to 0.22 µF, with a rated voltage of 300 VAC and a recommended DC voltage of 1200 VDC. YAGEO also positions the series for harsh environments, with THB grade performance, high-temperature operation up to 125°C for 2,000 hours, and suitability for long-life industrial and automotive systems.

That matters because these parts are being aimed at real power conversion hardware, not just controlled lab conditions. Once the application moves into onboard chargers, energy storage systems, or three-phase UPS designs, thermal stress, humidity, and long-term stability become just as important as transient handling.

The Point Is To Make The EMI Filter Easier To Close

The R41D V234 Series also carries Y2/X1 safety classification, AEC-Q200 compliance, and RoHS, REACH, and halogen-free compliance. Those details matter because a safety capacitor only becomes useful in practice if it can move into regulated industrial and automotive designs without adding qualification headaches. That is what gives this launch its value. YAGEO is not just offering another suppression capacitor. It is trying to bring higher dV/dt and ripple current handling into a safety-classified film capacitor that can reduce filter count in SiC- and GaN-based power systems.

Learn more and read the original announcement at www.yageogroup.com

Technology Overview

The YAGEO R41D V234 Series is a family of Y2/X1 metallized polypropylene EMI suppression film capacitors for wide-bandgap power conversion systems. The series covers 0.001 µF to 0.22 µF, is rated for 300 VAC, has a recommended DC voltage of 1200 VDC, and offers high dV/dt and increased Irms capability for EMI filtering in applications such as OBCs, DC-DC converters, solar inverters, and EV charging stations.

View the R41D V234 Series datasheet.

Frequently Asked Questions

What is the R41D V234 Series used for?

It is used for EMI filtering in wide-bandgap power systems including onboard chargers, DC-DC converters, solar inverters, energy storage systems, EV charging stations, three-phase UPS systems, and HVDC filters.

What electrical range does the R41D V234 Series support?

YAGEO specifies a capacitance range of 0.001 µF to 0.22 µF, a rated voltage of 300 VAC, and a recommended DC voltage of 1200 VDC.