Base metal gets the 'OK' for multilayer ceramic caps

18 June 2003 Passive Components

According to passive component specialist, Murata, changing from 'noble' to 'base' metals has been a key factor in availability, price stability and size reduction of multilayer ceramic capacitors.

Unfortunately, it has been such a fundamental change that long-standing safety recognitions of Murata capacitors have had to be re-established. This has been going on for a while and new recognitions have recently been added to the list.

SEMKO, the Sweden-based authority, has recognised Murata ceramic chip capacitors (MLCCs) with base metal internal electrodes and X7R dielectric (±15%, -55°C +125°C) to IEC60384-14 2nd edition, classes Y2 and Y3.

Murata's GA3-GF range is recognised to class Y2 250 V a.c. (r.m.s.). Values are 1,0 and 2,2 nF and EIA chip sizes 2211 and 2220 respectively. The GA3-GD series is recognised to class Y3, comprising values from 100 pF to 2,2 nF in EIA 1808 size up to 1,5 nF and 1812 above that.

This is one of a number of programmes that extend the use of base metals in component production, reduce or eliminate Pb and convert more and more safety capacitors to the new materials and latest standards.

For more information contact Avnet Kopp, 011 809 6100, [email protected], www.avnet.co.za

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