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Old 10-20-2020, 12:33 AM   #1
jpyerry
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City & State: Albany, NY
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Line Voltage: 120VAC 60Hz
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Default Please help identify a capacitor

I really hate to post a newbie question, but I need help identifying a capacitor. I have attached a photograph containing two capacitors, I am almost certain they are mica capacitors. I have searched for how to read the codes on the capacitors and I just cannot seem to figure out what they mean. I also tried measuring the capacitance with my multimeter to try to narrow down the possibilities to give me a clue as to how to read the values, unfortunately my meter gives me wildly inconsistent numbers every time I try to test the capacitance, so no help there.

If anybody can tell me how to read the codes on these, it would be greatly appreciated.

Thank you very much.
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File Type: jpg 20201019_212907.jpg (136.4 KB, 40 views)
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Old 10-20-2020, 09:03 AM   #2
R_J
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Default Re: Please help identify a capacitor

The look like cornell dubilier mica capacitors 20pf/100v and 50pf2%/300v
You need a capacitor meter to read the capacity.

Last edited by R_J; 10-20-2020 at 09:20 AM..
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Old 10-20-2020, 09:49 AM   #3
jpyerry
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Default Re: Please help identify a capacitor

I appreciate your help.

So, the ".7" after the twenty doesn't mean anything? I wasn't sure if it was a multiplier or some sort of tolerance specification I wasn't aware as this is the first time I have actually seen mica capacitors and it was really throwing me off.
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Old 11-27-2020, 04:43 PM   #4
R_J
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Default Re: Please help identify a capacitor

Never mind

Last edited by R_J; 11-27-2020 at 04:47 PM..
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