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Quad EMI filter array integrates ESD protection

Posted: 12 Jul 2007 ?? ?Print Version ?Bookmark and Share

Keywords:EMI filter array? ESD protection? quad EMI filter?


Kyocera Corp. has introduced the KVA21 quad EMI filter array, a compact, RoHS-compliant, distributed-constant-type component that integrates EMI filtering and ESD protection in a single package.

The KVA21 series features the company's new varistor material, replacing the dielectric ceramic used in previous KNA series filters. The varistor has been optimized using advanced electromagnetic simulation to combine ESD protection with EMI filtering, offering the same level of filtering performance as before in a smaller package size for integration on the circuit board.

Kyocera and affiliate AVX developed the EMI filters with the varistor function based on AVX advanced material technology. Circuits with the new material were designed with advanced EMF simulation, optimizing the L (inductors) and C (capacitors) layout on the filter array. The result is an 8kV ESD contact discharge in accordance with IEC/EN 61000-4-2. The KVA21 series also offers attenuation characteristics exceeding 30dB over the wide and on the high-frequency band by distributed-constant LC filter.

The KVA21's optimized monolithic LC filter also offers higher reliability. The new units, measuring 2-by-1.25-by-0.7mm (typ.), will be available in sample quantities beginning this month, and go to volume production in August.

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