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• RE: where to find high quality small value caps - Andy Nehan 10:18:31 03/24/08 (0)
  In Reply to: RE: where to find high quality small value caps posted by tmw57 on March 23, 2008 at 08:56:59

  You may not be aware that TAB Mica in the UK does made to measure Mica caps - so if you want 297pf (say) they will make you 297pf andat 0.1%.
  
  They sound good too and the prices are VERY reasonable.
  
  

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• RE: where to find high quality small value caps - TimFox 09:34:41 03/23/08 (0)
  In Reply to: RE: where to find high quality small value caps posted by tmw57 on March 23, 2008 at 08:56:59

  Be careful of polystyrene. It is an excellent dielectric, but it has the lowest "service temperature" of any of the common capacitors. It is very easy to melt the plastic by soldering or too much heat from neighboring components.
  Although controversial, you can also try NP0 or COG ceramic. Do not consider any of the other ceramics. My favorite is the 1000 V disc ceramic NP0s from Ceramite (former Sprague, now Vishay), but they are only available up to 220 pF or so. (The modern monolithic multi-layer ceramic (MMLC) capacitors (chip capacitors in a plastic housing) are usually available only up to 200 V DC working voltage in COG, but can be found over 1000 pF in 200 V).
  
  

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• RE: where to find high quality small value caps - Slick 09:28:06 03/23/08 (2)
  In Reply to: RE: where to find high quality small value caps posted by tmw57 on March 23, 2008 at 08:56:59

  Rel-Cap RTE are reasonably priced and good sounding polystyrenes available from Parts Connexion, Sonicraft and no doubt others. Handmade Electronics has Silver Mica in all the necessary sizes and 1% tolerance. Sonicraft also has Sonicaps, Gen I, in the many of the sizes needed at very good prices.
  
  Slick
  
  
  "You can never go fast enough" James Taylor in Two Lane Blacktop
  
  

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  • RE: check the leads on the recent production RTE caps for ferous content - reb 16:18:51 03/23/08 (1)
    In Reply to: RE: where to find high quality small value caps posted by Slick on March 23, 2008 at 09:28:06

    I sent back some .01uf REL-CAP RTE that had magnetic leads. Apparently, the vendor has to specify with REL that they want to stock non-ferous.
    
    

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    • Please: Which Vendor Stocks Non-Ferrous? - Slick 16:36:55 03/23/08 (0)
      In Reply to: RE: check the leads on the recent production RTE caps for ferous content posted by reb on March 23, 2008 at 16:18:51

      Or, who is stocking ferrous, that you had to return?
      
      Inquiring minds want to know!
      
      Slick
      
      "You can never go fast enough" James Taylor in Two Lane Blacktop
      
      

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• Polystyrene are theroretically great, but... - Allen Wright 09:08:24 03/23/08 (2)
  In Reply to: RE: where to find high quality small value caps posted by tmw57 on March 23, 2008 at 08:56:59

  ...I say aviod like the plague the small value transparent round ones with axial leads that do not exit on the center line.
  
  They tend to look good but sound bad, by experience.
  
  Silver mica are OK, but I prefer the FKP2 range from WIMA. No idea where you would get them outside of Europe.
  
  Regards, Allen
  
  

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  • Mouser... - nerdorama 10:15:26 03/23/08 (1)
    In Reply to: RE: Polystyrene are theroretically great, but... posted by Allen Wright on March 23, 2008 at 09:08:24

    Mouser Electronics has some Wima FKP2 caps in smaller values.
    
    Regards,
    John
    De gustibus non est disputandum
    
    

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    • RE: Mouser... - tmw57 15:09:15 03/23/08 (0)
      In Reply to: RE: Mouser... posted by nerdorama on March 23, 2008 at 10:15:26

      Thanks so much!
      
      

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