Reliable film capacitors for harsh environments and high temperatures

With the R53B series, KEMET Corporation extends its range with new EMI suppression capacitors constructed of metallised polypropylene film. The capacitors are available from Rutronik in tape and reel packaging according to IEC 60286-2. They function extremely reliably even at very high temperatures (up to 125C) and meet UL 94 V-O specifications thanks to an envelope of self-extinguishing resin in the housing.

The series relies on X2 technology, currently the first on the market, which combines THB class IIIB, miniaturised dimensions, high capacitance value, and low halogen content. They also meet climate class 40/110/56 requirements, IEC 60068-1, are AEC-Q200 certified, and are RoHS compliant.

The capacitors operate in a capacitance range of 0.068 - 20 μF at a recommended DC voltage of ≤ 1000 VDC and with a rated AC voltage of 350VAC 50/60Hz or a rated DC voltage of 800VDC. The service life of the R53B capacitors is 1,000 hours at an operating temperature of -40C to +125C.

Target applications include capacitive power supplies, three-phase UPS, smart metering, and microinverters for solar applications. Due to their robustness, they are also ideal for automotive applications like on-board chargers.