I have a film capacitor (5mm lead spacing) that's blue and has this written on top of it: "u22nJ2A"
There are other film capacitors around it which are written "u22J63" which i know are .22uF 5% tolerance and 63V.
Could the u22n also mean .22uF?
J is 5%, but what does the whole 2A stand for? perhaps 250V?
Help appreciated.
- Timothy
There are other film capacitors around it which are written "u22J63" which i know are .22uF 5% tolerance and 63V.
Could the u22n also mean .22uF?
J is 5%, but what does the whole 2A stand for? perhaps 250V?
Help appreciated.
- Timothy
22nF 5%, it could be a 63V part. If you can figure out who manufactured it you can then probably look up the data sheet which should remove all mystery.
Post a picture here, and tell us where it is used and that would help with sourcing a suitable replacement.
Post a picture here, and tell us where it is used and that would help with sourcing a suitable replacement.
Thank you for the swift response Kevin.
So it's an 0.022uF/22nF 5% film capacitor?
I thought if it had the "u" before the 22, it would mean it's 0.22uF/220nF.
It is used in the coupling for a powered Studio Monitor (Emotiva Airmotiv 6)
Seems like cheap Chinese wholesale film capacitors.
The board receives XLR/RCA Line Input, and has LF and HF EQ adjustment knobs.
Here are some pictures.
http://imageshack.us/a/img843/3900/ji7a.jpg
http://imageshack.us/a/img855/2067/bgwz.jpg
So it's an 0.022uF/22nF 5% film capacitor?
I thought if it had the "u" before the 22, it would mean it's 0.22uF/220nF.
It is used in the coupling for a powered Studio Monitor (Emotiva Airmotiv 6)
Seems like cheap Chinese wholesale film capacitors.
The board receives XLR/RCA Line Input, and has LF and HF EQ adjustment knobs.
Here are some pictures.
http://imageshack.us/a/img843/3900/ji7a.jpg
http://imageshack.us/a/img855/2067/bgwz.jpg
Yes, it appears to be a 22nF/0.022uF cap to me. I've seen similar parts in the past.
Perhaps Emotiva would be able to provide a service manual?
Perhaps Emotiva would be able to provide a service manual?
Ah. If it's a 0.022uF/22nF capacitor, would that mean that the "u22J63" is also a 0.022uF/22nF cap?
Or perhaps it's different due to the added "n" after?
I'll see if i can get Emotiva to respond.
Or perhaps it's different due to the added "n" after?
I'll see if i can get Emotiva to respond.
Yes, the n signifies unit and decimal point. 4n7 being 4.7nF, 22n being 22nF, etc. Conventions differ between manufacturers, but u22 should be 0.22uF in this case..
Woah, you're right.
With the added "n", it would seem that the value becomes 0.022uF.
Whereas no "n", it would equal 0.22uF (based on results of google search).
What i don't understand is why adding the "n" would change anything when the 22 is still after the "u".
With the added "n", it would seem that the value becomes 0.022uF.
Whereas no "n", it would equal 0.22uF (based on results of google search).
What i don't understand is why adding the "n" would change anything when the 22 is still after the "u".
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Good you found out now, very frustrating if you had installed the wrong part, would result in some pretty odd behavior in what I suspect is probably the tweeter cross-over..
Again it is marking convention which often differs slightly from one manufacturer to another, but usually when no unit is given fractional uF are assumed. Adding an N tells you it is nF...
For now that would make sense, I suspect if you hear any improvement with the other cap replacements you'll want to do these too.
All right thanks, i'll just take the safe route and check with the manufacturer's.
Thanks so much.
Thanks so much.
I'll start with the 0.22uf's first and wait for the reply from manufacturer before proceeding to the u22nJ2A's.
There are just one of them on each of the speaker monitor, i don't think just one cap change alone will affect the SQ.
There are just one of them on each of the speaker monitor, i don't think just one cap change alone will affect the SQ.
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