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VOLUME -22 NUMBER 8
Publication Date: 08/1/2007
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High Voltage SMD Mica Capacitors from CDE
Mica SMD capacitors.
New Bedford, MA — Cornell Dubilier Electronics (CDE) has expanded its series of multilayer RF chip capacitors. The new 2500VDC and 4000VDC rated Type MCH uses high Q alumina silicate (mica)/resin/epoxy construction to avoid cracking and delaminating associated with porcelain and NPO ceramics in large SMD sizes. The natural rugged flexibility and high temperature threshold of these chips is compatible with FR4 boards and permits wave soldering. A non-magnetic version, MCHN, is available for applications such as MRI where strong magnetic fields are present. Type MCH and MCHN are designed for use in high RF power designs where stability and low losses are critical. Applications include MRI coils, plasma chambers, baluns, lasers, RF power amplifiers, antennas and transmitters.
Type MCH is available in a 3838 (0.380 x 0.380-in.) (9.9 x 9.9mm) case size, surface mountable package. The cataloged capacitance values range from 10pF to 220pF at 4000VDC and up to 1000pF at 2500VDC. The MCH reportedly has lower ESR, higher Q and higher current carrying capability than other similar dielectrics including porcelain and NPO ceramics.
For more information, contact: Cornell Dubilier Electronics, Inc., 1605 East Rodney French Blvd., New Bedford, MA 02744-2294
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