Re: Capacitor Value


Well, I was pretty sure 18uf was out of the question, but I'm used to
seeing two digits followed by a multiplier. I'm pretty sure they are
METALIZED polyester film. They are in blue plastic. The ones I
substituted from the junk monitors were in white plastic. I'm not
sure the color means anything at all.

0.18uf 100v Metalized Polyester film .... that should be it. Thanks!

-Bill

On Mon, 29 May 2006 23:14:29 +0100, Pooh Bear
<rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:



bill wrote:

I'm repairing a couple of LCD monitors and determined the cause in
both monitors to be defective Metalized Polyester film capacitors.
They were damaged by excessive heat on the inverter board.

The markings on the capacitor is "u18j100" ( the "u" looks like the
"u" in "uf").

It's an abbreviation of 0u18 or 0.18uF - J is the tolerance ( 5% ) and 100 is
the voltage

I found a similar capacitor in an old junk monitor
board that has the marking "22j63". I put that in and the montiors
work fine. I am assuming the numbers after the "j" (5% tolerance, I
would think) indicate the working voltage, 100v vs 63v, so obviously I
need to get the right part. However, I am uncertain as to the actual
value of the original capacitor. Is this an 18 uf capactior, or 18pf,
or something else. My guess would be 18pf, 100v.

Very wrong. Surely you could see by the size ?

They are in plastic packages, about 7mm square, 3mm thick

Probably polyester film. Is it yellow plastic ?

Graham
.