capacitor cross reference

Discussion in 'General Electronics Chat' started by markosillypig, Aug 15, 2014.

  1. markosillypig

    Thread Starter Active Member

    Jul 21, 2008
    184
    0
    hi every one
    i just need a little help
    i have a schematic but the caps are in mmf
    so i just need to know as my chart does not tell me what is
    15 mmf
    .001 mf
    2 mf
    0.001 = 10pf am i right
    2 mf = 2 uf is this right
    15 mmf = ??
    cheers
    for any help
    marko
     
    Last edited: Aug 15, 2014
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
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    mmF is an obsolete way saying picoFarad. It is derived from the obsolete method of describing a microFarad, so the old mf is really uF (1e-6), and mmf is really pF (1e-9).

    so,
    15mmf is 15pF
    .001mf is 1000pF or 0.001uF
    and so on.
     
  3. Gdrumm

    Distinguished Member

    Aug 29, 2008
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    36
    Last edited: Aug 15, 2014
  4. MikeML

    AAC Fanatic!

    Oct 2, 2009
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    1,066
    That table is the way it is done now. You were asking about how it was done 50years ago...
     
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