Author Topic: Question regarding deciphering 'green' capacitor values  (Read 2944 times)

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dannydowrong

Question regarding deciphering 'green' capacitor values
« on: June 02, 2005, 12:08:34 PM »
2A102KT =  ?     on C4

2A223KT =  ?     on C3, C12

2A332JT  =  ?     on C11

these are on green dipped caps inside new RAT 2 I bought.

Oh, it says RAT 3 inside, but is still being sold as RAT 2!

this pedal sucks, and I plan on making it not suck!
hold on folks

davebungo

  • Guest
Question regarding deciphering 'green' capacitor values
« Reply #1 on: June 02, 2005, 12:21:36 PM »
102 = 10 * 10^2 pF = 10 00pF or 1nF
223 = 22 * 10^3 pF = 22 000pF or 22nF
332 = 33 * 10^2 pF = 33 00pF or 3.3nF

hope you get the idea

octafish

Question regarding deciphering 'green' capacitor values
« Reply #2 on: June 02, 2005, 02:38:15 PM »
I didn't recognise the ^ convention in davebungo's post so I thought I'd add that it is 10 to the power of (insert number). For example 223 would be 22x(10x10x10). Sorry if this condesending but I don't know your level of knowledge.
Shoot straight you bastards. Don't make a mess of it. -Last words of Breaker Morant

nelson

Question regarding deciphering 'green' capacitor values
« Reply #3 on: June 02, 2005, 06:01:18 PM »
"A newer nomenclature has developed, where three numbers are printed on the body of the capacitor. The third digit in this case works like the multiplier band on a resistor; it tells the number of zeros to tack onto the end of the two significant digits. Thus, if you see a capacitor marked "151," it is not a precision component. Rather, it is an ordinary capacitor with a capacitance of 150 pf. In this nomenclature, all values are given in picofarads. Therefore you might well see a capacitor marked 684, which would mean 680000 pf, or 0.68 µf."


http://www.play-hookey.com/dc_theory/capacitor_values.html

I got this doing a google search using string "reading capacitor values"

thats the basic premise, although there are exceptions to it, the third number denotes how many zeros to add onto the number before it and that value is then in picofarads (pf).

Have fun.
Nelson
My project site
Winner of Mar 2009 FX-X