Product category: EMC Components
News Release from: Kyocera Corp | Subject: KVA21
Edited by the Electronicstalk Editorial Team on 06 July 2007
EMI filters use novel varistor material
Device combines electromagnetic interference filtering and electrostatic discharge protection in a single package.
New from Kyocera Corp, the KVA21 quad EMI filter array is 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, typically measuring only 2.0 x 1.25 x 0.7mm, will be available in sample quantities beginning in July, and go to volume production in August
This article was originally published on Electronicstalk on 13 Oct 2005 at 8.00am (UK)
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The KVA21 series features Kyocera's new varistor material, replacing the dielectric ceramic used in previous KNA series filters.
The varistor has been optimised 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, optimising the L (inductors) and C (capacitors) layout on the filter array.
The result is an 8kV ESD contact discharge - in accordance with IEC/EN61000-4-2.
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 2.0GHz band with minimal insertion loss equivalent to the conventional products.
The KVA21's optimised monolithic LC filter also offers higher reliability and complies with the RoHS Directive.
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