From: mynamespacedbydots@xs4all.nl   
      
   "Alex Pogossov"  wrote in message   
   news:50137c15$1@dnews.tpgi.com.au...   
   > Hello,   
   >   
   > In 1960's japanese radio manufacturers (Pioneer, Lafayette and others)   
   > started using disc ceramic caps in their radios and tuners-amplifiers. (AM   
   > "stereo" dual radio receiver with a stereo amp 2x6BM8 is a trypical   
   > example). These caps were placed in abundance for decoupling in the RF   
   > stages. I have many of such caps in my junk box.   
   >   
   > These disc ceramic caps can be green (manufacturer TAIYO) or mustard   
   > colour (TDK). Diameter varies from 8mm to 18...20mm depending on value and   
   > dielectric.   
   >   
   > For example, one of them is marked :   
   > .01uFM   
   > TAIYO   
   >   
   > Another (smaller):   
   > .01uFP   
   > TAIYO   
   >   
   > Another:   
   > .01MF   
   >  M   
   > TDKE   
   >   
   > I think the letter after the value ("F" or "P") is tolerance. I guess M =   
   > +/-20%, and P could  be +100%  / -25% or something like that, suggesting   
   > that some are like modern X7R dielectric, others like Z5U dielectric.   
   >   
   > But my question -- what is the vorking voltage of such caps? 250V? 500V?   
   > Maybe the letter is not tolerance, but voltage? Can they be used for   
   > recapping vintage radios where upon power-up when 5Y3 warms up, the B+   
   > voltagee reaches almost 400V?   
      
      
   Although I doubt you'll find the info you're looking for,   
   Capsite 2009 has tons of information about capacitors.   
   See: http://my.execpc.com/~endlr/index.html   
   - Chapter "Markings" and the links therein.   
   - Chapter "More information", links page.   
      
   Regards,   
   Gio   
      
      
   >   
   > Regards,   
   > Alex   
   >   
      
   --- SoupGate-Win32 v1.05   
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