Build Your Own Clone Message Board

Sorry... Don't know if this is the right spot. Is this a 390pf cap?? I can't seem to find a answer on the net. I know the code for 390pf is 391 but I found some stuff on the web stating this might be a 390pf cap. Thanks!!

Oh yeah it says... 390J

Yep - 390pf silver mica

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Awesome!!! So it's a go for the 390pf spot on my Klone build?! You rock!

I'd measure it. I've seen micas and ceramics that use the "0" to mean literally "no zeroes" after the number. For example, I have some 98pf micas that are labelled "980J". And then I've seen other caps where the zero is the last significant figure.

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TightCamera - Gear Reviews

Thanks for the info! All I have is a analog MM. Is it possible to measure it with this??

I haven't seen an analog multimeter that does capacitance but I'm sure they exist. Measuring capacitance though obviously being the key piece.

CJ - isn't it ironic that they'd use a 0 to indicate, specifically, no zeroes. Hahahaha.

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Yeah I don't think I can.. I ordered up some 391 disc caps just in case. I can always wait. I wanna say the caps above are 390pf but they could be 39pf as well. I guess I will wait. Thanks so much guys!!!:)

Not a 390 pfd.. CM05 is a mil spec part and the part number indicates its 39 pfd

If it was a 390 pfd the mil spec would be 391J for 5%

It actually kinda makes sense. That position in the value code tells you how many zeroes (multipliers) to add. So it's really adding on 10s and not zeroes.

But yeah, it's confusing and kinda funny to normal people like us.

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TightCamera - Gear Reviews

10^0 = 1

39 X 1 = 39

390 = 39pF

Makes sense but I agree measure those caps. I never really measure stuff anymore but those <100pF caps I always do.

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http://www.pdfelectronics.com/

likely 39 puff.