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New RF capacitors operate up to 2,500Vdc

Posted: 15 Jan 2007 ?? ?Print Version ?Bookmark and Share

Keywords:RF chip capacitor? chip capacitor? capacitor? new capacitor? Cornell Dubilier Electronics?

Cornell Dubilier Electronics (CDE) has expanded its series of multilayer RF chip capacitors with voltage ratings up to 2,500Vdc. The MCH and MCHN capacitors are designed for use in high RF power designs where stability is critical. Applications include MRI coils, plasma chambers, baluns, lasers, RF power amplifiers and transmitters.

The Type MCH uses a high Q mica dielectric to avoid cracking and delaminating that is often associated with other SMD dielectrics in large sizes. The high temperature threshold of these chips is compatible with FR4 boards and permits wave soldering.

Available in a 3838 case size, the surface-mount MCH devices offer capacitance values from 270pF to 1,000pF with additional ratings available. The RF capacitors offer lower equivalent series resistance (ESR) and higher current carrying capability than other similar dielectrics, said the company. The operating temperature range is -55C to 125C with no voltage derating at 125C.

A non-magnetic version, Type MCHN, is available with the same ratings. Pricing starts at less than $6.49 each in OEM quantities. Delivery is from stock to eight weeks from authorized CDE distributors.

- Gina Roos

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