mc1822d Posted December 27, 2019 Report Share Posted December 27, 2019 I want to re-cap an old shortwave receiver but I cannot find a 250 uufd mica capacitor. As a matter of fact I can't even find any capacitor with a uufd designation.. Is there a cross-reference for this value? This value is listed in the construction manual list of parts from an old Lafayette tube shortwave receiver. Quote Link to comment Share on other sites More sharing options...
HarryA Posted December 27, 2019 Report Share Posted December 27, 2019 Capacitor conversion chart / table - a capacitor value conversion chart or capacitor conversion table to convert capacitor values between picofarads (pF), nanofarads (nF), microfarads (µF) Capacitor Conversion Chart microfarads (µF) Nanofarads (nF) Picofarads (pF) 0.000001 0.001 1 0.00001 0.01 10 0.0001 0.1 100 0.001 1 1000 0.01 10 10000 240 pf capacitors are available on ebay Quote Link to comment Share on other sites More sharing options...
mc1822d Posted December 30, 2019 Author Report Share Posted December 30, 2019 I realize that uf means microfarads but what are uuf capacitors? Is that an old designation for microfarads? Quote Link to comment Share on other sites More sharing options...
HarryA Posted December 30, 2019 Report Share Posted December 30, 2019 "Micromicrofarad" or "micro-microfarad" is an obsolete unit found in some older texts and labels, contains a nonstandard metric double prefix. It is exactly equivalent to a picofarad (pF). It is abbreviated μμF, uuF, or (confusingly) "mmf", "MMF", or "MMFD". A microfarad is 10 to the -6 so a micromicrofarad is 10 to the -12 = picofarad from: https://en.wikipedia.org/wiki/Farad Good luck with your radio. I repaired lots of radios years ago. I wish I had some of the old radios I cut up for parts. I still like tubes! Quote Link to comment Share on other sites More sharing options...
mc1822d Posted December 30, 2019 Author Report Share Posted December 30, 2019 Thanks! Now I know what to buy! Quote Link to comment Share on other sites More sharing options...
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