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Hello guys,
Restoring an old amp and have some questions,1.) Is the "0.022 mfd" means it is 0.022 milli or 220 micro Farad?
2.) What about the "39 10%"?
3.) The "150mmFd" on the schematic means 150 micro farad or 0.15 nano F?
4.) What about one of the ceramic cap labeled "001 +/- 20%, is that 0.1 uF?
Thank you!Abe
Edits: 01/30/17Follow Ups:
I know you got answers on the questions you had - but I wanted to point out that the 39 pf ceramic cap is an "NPO" capacitor. This is a very high grade cap with tight tolerances and much better specs in general than a run of the mill ceramic.
I'd replace it with a good film cap or a silver mica. NPO ceramics are a bit hard to find and pricey these days.
NT
COG is an alternative name for NPO dielectric. Fortunately, Mouser stock # 75-561R10TCCQ39 fills the requirement at 74 cents each. That's not especially expensive for a 5% tolerance/1000 WVDC part.
Eli D.
I forgot about that designation since I rarely use ceramics.But if you are looking for them they are C0G (C-zero-G) not C-letter O-G. It may help if you are doing a search.
Also, if you want to know what C0G stands for, the EIA codes are listed on the page below. Just scroll down about 10-20% of the page.
Edits: 01/30/17
Nt
I deleted my post because it contained the same information as Alpha Al's. We must have been composing them at the same time, and he posted first.
It irks me when there's 17 redundant answers to the same question here on the Asylum, so I removed mine.
Good luck with your project. Oh, and what amp is it you're working on?
It's time to order the parts!
Abe
No.
.022MFD =.022uF.
39 MMF = 39uuF, or 39 pF.
150 MMF = 150 uuF, or 150 pF.
.001 = .oo1 uF, or 1000pF.
MMF (micro micro Farad) and uuF are old terminology, but both mean the same thing.
That .022 mfd. = 0.022 muF. A 716P orange drop is a highly satisfactory replacement.
The ceramic disk part is 39 pF.
Eli D.
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