Kyocera Corporation is pleased to introduce the KVA21 quad EMI filter array, a compact, RoHS compliant, distributed constant type component featuring both electromagnetic interference (EMI) filtering and electrostatic discharge (ESD) protection in a single package. The new units, measuring only 2.0 x 1.25 x 0.7 mm (typ.), will be available in sample quantities beginning in July, and go to volume production in August.
The KVA21 series features Kyocera’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 high level of filtering performance as before and 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 electromagnetic field simulation, optimizing the L (inductors) and C (capacitors) layout on the filter array. The result is an 8 kV 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. Even with the added function of ESD protection, over the 800MHz to 2.0 GHz band with minimal insertion loss equivalent to the conventional products.
The KVA21′s optimized monolithic LC filter also offers higher reliability and complies with the RoHS directive.
KVA21 Series Overview
Type: Multilayer EMI filter array with ESD protection
Product Name:KVA21 Series
Size: 2.0 x 1.25 x 0.7 mm (typ.) (JIS code: 2012)
Manufactured at: Kokubu plant, Kagoshima Japan
Production capacity: 10 million units / month (as of August 2007)
Kyocera Corporation (TSE: 6971; NYSE: KYO) was founded in Kyoto in 1959 as a producer of advanced ceramics. Today the Kyocera Group includes more than 170 companies around the world, with more than 63,000 employees. By combining engineered ceramic materials with metals and plastics, and integrating them with other technologies, Kyocera has become a leading supplier of semiconductor packages, electronic components, industrial ceramics, telecommunications equipment, optical instruments, laser printers, copiers and solar energy systems. During the year ended March 31, 2007, Kyocera’s consolidated net sales were JPY 1,283 billion with net income of JPY 106,504 million.