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Kyocera Launches World's Smallest EMI Filter with ESD Protection

January 28, 2008
Kyocera Corporation (President : Makoto Kawamura) is pleased to introduce the KVA16 quad EMI filter array, LC distributed constant type component featuring both electromagnetic interference (EMI) filtering and electrostatic discharge (ESD) protection in a single package. The new unit, the so-called 1608 type since it measures only 1.6 x 0.8 x 0.5 mm (typ.), is the world's smallest LC filter, approximately half the size compared to the KVA21 series (2012 type), the EMI filter with ESD protection function, which is already in Kyocera’s product lineup. The smaller size contributes to minimize the assembly space on the circuit board. It will go to volume production in March this year.


Like the KVA21 series, the KVA16 series features varistor material developed by AVX, Kyocera’s affiliate in the United States. The circuits and structure with the new material were designed with advanced electromagnetic field simulator developed by Kyocera Corporation, optimizing the layout of the L (inductors) and C (capacitors) on the filter array. The result is an 8-kV ESD contact discharge – compliant with IEC/EN 61000-4-2.

Even with the added function of ESD protection, the series minimizes insertion loss. It realizes steep attenuation curve equivalent to the conventional products (the KNA series) over the 800-MHz to 2.0-GHz range and the filter circuit that shows high attenuation characteristics over 20 dB.


The KVA16’s optimized monolithic LC filter also offers higher reliability, which is suitable for volume production, and complies with the RoHS directive.


photo:1608 quad EMI filter with ESD protection function
1608 quad EMI filter with ESD protection function


KVA16 Series Overview
Type: Multilayer EMI filter array with ESD protection
Product Name:KVA16 Series
Size: 1.6 x 0.8 x 0.5 mm (typ.) (JIS code: 1608,EIA code:0603)
Manufactured at: Kokubu plant, Kagoshima Japan
Production capacity: 10 million units / month (start in March 2008)
* The product has been available in sample quantities since December 2007.


Specifications
(Static electric discharge resistance ±8 kV contact discharge, as per IEC/EN 61000-4-2 compliance)

Part number

Cut off
frequency

Capacitance

Attenuation

Rated voltage

Varistor
voltage

800 - 1000 MHz

1.0 - 2.5 GHz

KVA16300C25

300 MHz

25 pF

25dB

20dB

5V

16-24V

KVA16200C35

200 MHz

35 pF

30dB

20dB

5V

10-16V