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KEMET capacitance values offer C0G dielectric performance

18 Dec 2013

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KEMET has added capacitance values to its high-voltage surface mount multi-layer ceramic capacitor portfolio. The company says it has developed several new part types with capacitance values that offer both high voltage capability and the stability and performance of C0G dielectric. Capacitance features are now more than four times greater in devices with voltage ratings of 500 VDC–3,000 VDC in EIA 0805–2225 case sizes, according to the company. The increased CV values may open the way for optimisation and downsizing, and can be an alternative to other dielectric technologies that are not environmentally green or robust enough to withstand Pb-free surface mount processing.

High Voltage Surface Mount MLCCs in C0G dielectric feature a 125 ℃ maximum operating temperature and are considered extremely stable. The C0G dielectric exhibits no change in capacitance with respect to time and voltage, and boasts a negligible change in capacitance with reference to ambient temperature. In compliance with RoHS legislation, KEMET is offering these products with 100 per cent pure matte tin-plated terminations that allow for solderability.

Automotive Grade is available for applications requiring performance in harsh environments. Whether under-hood or in-cabin, these capacitors are designed for mission and safety critical automotive circuits. Stricter testing protocols and inspection criteria have been established for automotive grade products in recognition of potentially harsh environmental conditions. KEMET Automotive Grade series capacitors meet the demanding Automotive Electronics Council's AEC-Q200 qualification requirements.

Target markets include alternative energy, computer/consumer, industrial/lighting, medical, telecommunications, transportation, defence, and aerospace. Typical applications include switch mode power supplies (including input filters, resonators, tank circuits, snubber circuits, and output filters), high voltage coupling and DC blocking, lighting ballasts, voltage multiplier circuits, DC/DC converters, and coupling capacitors in Cuk converters.

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