SMPS Stacked Capacitors meet military specifications.

Press Release Summary:

Intended for Switch Mode Power Supply (SMPS) and pulse energy applications, military-grade ceramic stacked capacitors are qualified to MIL-PRF-49470 and DSCC Drawing 87106. ESR and ESL values make them suited for power supply I/O filtering as well as snubber applications. Available in case codes 3, 4, and 5, solutions offer X7R dielectric, voltage ratings from 50-500 Vdc, and capacitance values to 47 µF. Chip stack is horizontal, and leadframe attachment is high-temperature solder.

Original Press Release:

KEMET Launches Military SMPS Stacked Capacitors

New product to be used in high-frequency power supplies

GREENVILLE, S.C., Feb. 11 -- In its continuing commitment to the defense and aerospace markets, KEMET Corporation (NYSE:KEM) today introduces military-grade ceramic stacked capacitors for use in high- frequency power supplies. The product is commonly referred to as Switch Mode Power Supply Stacked Capacitors, or SMPS Stacked Capacitors. The product line is qualified to Military Performance Specification MIL-PRF-49470 and DSCC Drawing 87106. The SMPS Stacked Capacitors are intended for high-reliability SMPS and pulse energy applications. Their low Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ESL) make them ideally suited for input and output filtering of power supply applications as well as snubber applications.

These capacitors are now available in case codes 3, 4, and 5, X7R dielectric, voltage ratings from 50 VDC up to 500 VDC, and capacitance values up to 47 uF. The chip stack is horizontal and the leadframe attachment is a high-temperature solder. They are also available in unencapsulated (unpotted bare chips) or encapsulated (potted assembly) styles. The encapsulated styles are primarily used for applications where increased mechanical and environmental protection is required, such as in avionics systems. The Military performance specification MIL-PRF-49470 is used to establish a baseline part for high-reliability applications.

With an operating temperature range between -55 degrees C and +125 degrees C, and with capacitance shift limited to +/-15 percent over that range, these SMPS Stacked Capacitors are an excellent choice for electrical applications, general purpose applications and high-frequency power supply circuits.

"Another new product introduction focused on the Defense and Aerospace market segment demonstrates KEMET's ongoing commitment to this market segment," stated KEMET Product Line Manager for Specialty Products Travis Ashburn. "As we strive to become The Capacitance Company, we continue to build on our decades of experience in the military and high-reliability segments to develop new products to service this key market."

Price ranges for these new products will depend on quantity, capacitance, voltage, case size, and tolerance. Larger case codes 1, 2, and 6 will be available for order in the third quarter of Calendar Year 2008. Contact KEMET for additional details or visit for complete specifications and performance characteristics.

KEMET Corporation applies world-class service and quality to deliver industry-leading, high-performance capacitance solutions to its customers around the world. KEMET offers the world's most complete line of surface-mount and through-hole capacitor technologies across tantalum, ceramic, aluminum (organic and electrolytic), film and paper dielectrics. KEMET's common stock is listed on The New York Stock Exchange under the symbol KEM. Additional information can be found at

Dean W. Dimke
Director of Corporate and
Marketing Communication

Travis Ashburn
Product Line Manager, Specialty Products
Ceramic Capacitors

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