trying to figure out of this film capacitor is good or bad.

[cresstt]

hi,

Im trying to fix a 90s toyota meter cluster. There's this Nichicon film capacitor which has the label "Nichicon .22 J 250 ".
Image of capacitor is attached. I already googled the values to no avail.

I'm trying to figure out if this cap is good or otherwise. Physically it looks ok and on the ESR meter, it reads 6.77Ω.

can somebody help ?

[cresstt]

from further google image search of these 2 links

https://www.amazon.com/Nichicon-QXJ2J224KTPT-Capacitor-Metallized-Tolerance/dp/B01MZAQXZE

and

https://www.goldmine-elec-products.com/prodinfo.asp?number=G20839


can I safely deduce that value is  .22uf 250v capacitor  ? If so, how do I determine if this a a good cap ? On the ESR meter, it reads 6.77Ω.


the usual  ESR  matrix/table matrix smallest value starts with a 1uF and that table values are only  for electrolytic caps and not for film caps.

Any idea?

 

[David Hess]

ESR meters are not intended to operate with such low capacitances because they rely on the reactance at the measurement frequency to be lower than the ESR.

0.22 microfarads at 100kHz is 7.2 ohms so your measurement of 6.77 ohms is consistent with a good capacitor.