[Milsurplus] Mica capacitors?

[W7QHO at aol.com]

In a message dated 12/4/06 11:25:55 AM, kelloggd at uthscsa.edu writes:


> Pardon my rookie level ignorance, but I need help with replacing a 0.003µF, 
> 800 V mica capacitor from a BC604.  One of the connecting wires broke off 
> flush with the plastic capacitor body.  I have looked on the internet and have 
> had trouble finding mica capacitors of that size (or at 1000v for that 
> matter).  I have found 1600 Volt Metalized Polypropylene Film Capacitors.
> 

Where is the subject cap connected in the 604 circuits?   If it's bypassing 
RF you should replace with a mica or ceramic unit and the exact value may not 
be critical, i.e., a .005, .01, .001, etc. would probably work.   If it's a 
coupling cap between two RF stages replacing with a unit closer to the original 
value could be important.   If in an audio circuit, on the other hand, mylar, 
film, Orange Drop, etc. types would probably be OK.

Dennis D. W7QHO
Glendale, CA
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