Cap Question - Printable Version

+- The PHILCO Phorum (https://philcoradio.com/phorum)
+-- Forum: Philco Radio Discussions (https://philcoradio.com/phorum/forumdisplay.php?fid=5)
+--- Forum: Philco Electronic Restoration (https://philcoradio.com/phorum/forumdisplay.php?fid=8)
+--- Thread: Cap Question (/showthread.php?tid=4825)

---

Cap Question - Radioroslyn - 06-01-2012

This is an easy one. I got a bunch of new cap that have these new fangled # on them like 223k. Where is there a converion chart so I can figure out what I've got? Had one but can't find it! GRRRR.
Terry

---

RE: Cap Question - tab10672 - 06-01-2012

you can find by googleing for "capacitor value and conversion chart" on the one you listed it is 1st#, 2nd#, then how many zeros- 22000 pf. just remember those are listed in picofarad you can find the chart for converting to microfarad by looking for what I listed above.

---

RE: Cap Question - morzh - 06-01-2012

Terry

Conversion is unnecessary as whatever you got is in pF, the lastdigit being the multiplier, or more exactly the power of ten, and the two fist digits is mantiss.

So it is 22 times ten to the power of three, that is 22000pF (or uuF which is the same) or 22nF or 0.022uF.

---

RE: Cap Question - Eric T - 06-05-2012

The letter at the end is the tolerance code.
J= +/-5%
K= +/-10%
M= +/-20%

There are many more; these are just the most common.

---

RE: Cap Question - TimC - 06-05-2012

Capacitors > CAPACITOR MARKINGS

 

 



 

CAPACITOR
MARKING

VALUE

101 .0001uf  = 100pf
151 .00015uf = 150pf
221 .00022uf = 220pf
331 .00033uf = 330pf
471 .00047uf = 470pf
681 .00068uf = 680pf
 
102 .001uf  = 1000pf
152 .0015uf = 1500pf
222 .0022uf = 2200pf
332 .0033uf = 3300pf
472 .0047uf = 4700pf
682 .0068uf = 6800pf
 
103 .01uf
153 .015uf
223 .022uf
333 .033uf
473 .047uf
683 .068uf
   
104 .1uf
154 .15uf
224 .22uf
334 .33uf
474 .47uf
684 .68uf
 
105 1.0uf
225 2.2uf
 

Having trouble determining the value of
that capacitor on your bench?
Here's a chart to help you out. The letter
after the marking often indicates the tolerance.

+/-5%(J), +/-10%(K), +/-20%(M)
Example:  101K would be 100pf, +/-10%

 

Picofarads to Microfarads ?


Maybe this will help you.

4.7 mmf or pf  = .0000047 mf
47 mmf or pf = .000047 mf
470 mmf or pf = .00047 mf
4,700 mmf or pf = .0047 mf
47,000 mmf or pf = .047 mf
470,000 mmf or pf = .47 mf
 


From Radio Daze website
 

 

 

---

RE: Cap Question - Radioroslyn - 06-07-2012

Txn for the chart! I figured out that 1= 000 2=00 3=0 4= no 0's
Found my chart later...
Terry

---