Cornell Dubilier Electronics announced the availability of its Type RA, radial, multilayered polymer capacitors for 125 °C operation. The Type RA capacitors are composed of stacked metalized polyester protected with an impregnated sealant, which eliminates the need for an external case.
This package style offers the highest energy density capacitive technology available for switching power supplies, dc to dc converters, and other high ripple current applications, according to the company. Other potential applications include EMI/RFI suppression; pulse generation; and any circuitry requiring low ESR/ESL, high dv/dt, and long life.
“These are excellent high-performance filter capacitors in a very small size,” says Chris Kelly, Product Manager at Cornell Dubilier Electronics. Type RA capacitors are impregnated with a microcrystalline polymer sealant and have an exterior tape wrap that protects the capacitor element from moisture, allowing it to operate in harsh environments of 85°C and 85% relative humidity in applications such as military vehicles and aerospace.
Available in capacitance values ranging from 0.1µF to 10.0µF with voltage ratings of 100Vdc, 250Vdc, 400Vdc, and 500Vdc. The Type RA capacitors are terminated with radial leads to cover a wide variety of applications in power electronics where high-density capacitors are needed for board-level dc filtering.
Cornell Dubilier RA capacitors series are available through the company’s chief franchised distributor sites for rapid turnaround on prototype and pre-production quantities.
- High-frequency response is similar to MLCCs, with better performance
- Capacitance is unaffected by an applied bias voltage
- Resists damage from pulses
- No Piezoelectric effect
- No cracking
- Greater lifespan