[time-nuts] GC-1000 Clock Cap Choice

Dr. Frank Stellmach drfrank.stellmach at freenet.de
Mon Jan 17 00:02:32 UTC 2011

Sorry, epcos sold ceramics business, and was itself swallowed by TDK.

If looking for X5R and X7R cer caps, visit vishay, kemet, taiyo yuden, 
murata and others instead.
This special material specification is well hidden at the official 
manufacturers specs.

Those are high grade ceramic dielectrics, realtively cheap, not 
necessarily space qualified, only automotive, and especially not an 
exotic component anymore.

If Tek had problems with tantalums in the past, they either have chosen 
bad suppliers (reliable / safe production is critical), or that was at 
the time, where the failure mechanisms were not understood well, or they 
have ignored application hints.

Today, its possible to use Tantalums safely even in automotive 
applications, that goes for ceramics also.

Its - as always - a question of component knowledge and reliability 


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