Print Page - Ceramic Capacitor decoding

Title: Ceramic Capacitor decoding
Post by: pbailey1129 on June 03, 2010, 04:10:12 PM

I'm in need of a .05uF cap. And I found an oddball capacitor in my stash, a big tan-colored ceramic that is labelled :

"50 J" - space between the '0' and 'J'...and then below it
"N80"

I'm not sure if this means .05uF or 50pF.

Anyone have insight?

Thanks in advance,

Title: Re: Ceramic Capacitor decoding
Post by: John Lyons on June 03, 2010, 04:18:16 PM

50pf most likely.

Title: Re: Ceramic Capacitor decoding
Post by: KazooMan on June 03, 2010, 04:21:39 PM

I believe that you have a 50 pF cap with a 5% tolerance (the letter J designates this). See this reference:

http://www.electronics-tutorials.ws/capacitor/cap_5.html

For caps with two digits the value is in pF. For three digit codes the third digit is the multiplier.

I have mentioned before that I purchased a capacitor meter here:

http://www.nkcelectronics.com/capacitance-meter-kit.html

for $8.99. It works great.

Title: Re: Ceramic Capacitor decoding
Post by: davent on June 04, 2010, 10:14:31 AM

Here's another good capacitor reading cheat sheet, (however only starts at 1000pf). http://www.amplates.com/images/AmplatesCapChart.pdf

dave

DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: pbailey1129 on June 03, 2010, 04:10:12 PM