Can anyone identify this cap?

[mike-hock]

Hi, i blew an electrolytic cap on a freeview box ( UK digital terrestial ) ,
so I changed the cap ( and it's immediate neighbor ) for new , same spec.

I changed the 1N4007 rectifier diode ( 1A 1000v ) on the 240v input and the 200kOhm resistor that was sat parrallel to it.

I have this capacitor here ( see pic ) but I'm not sure what it is...
can anyone identify it from the markings and dimensions???

my guess is a 630v 470nf metal foil in a polypropylene casing?
or have I got the figures very wrong? 472J ?? what is that?

Dimensions are... 13mm wide, 11mm tall, 6mm thick, 1mm thick leads which are 10mm apart.



As I'm a bit dumb... today, google is not my friend, nor is farnell or maplin, or even RS online. hmmm.

[steve2]

Re: Can anyone identify this cap?

4700pf 4.7nf .047uf J=5%tolerance These are usually cracked when they are bad from the ones I have seen. They were in inverter microwaves.

[skystormfarms]

Re: Can anyone identify this cap?

4700pf 4.7nf .047uf J=5%tolerance These are usually cracked when they are bad from the ones I have seen. They were in inverter microwaves.

do you mean microwave inverters

[steve2]

Re: Can anyone identify this cap?

No , the newer microwaves are inverter microwaves. They don't have the big heavy transformer in them. They weigh maybe 15 lbs instead of 40.

[skystormfarms]

Re: Can anyone identify this cap?

wen did thay start that i have a sharp that i boght in 2008 still has a t former

[mike-hock]

Re: Can anyone identify this cap?

Here's just one more.... I've NO IDEA what value it is, I've googled the numbers, tried Ebay etc.... Any clues? is it all JEDEC stuff? ( i say Jedi because you'd have to be as masterful as one to know these things )



Dimensions are roughly 9mm dia ( round bit )
5mm thick
Legs are 10.5mm apart (: ooh err ) and are offset, as in, if I lay it on it's back ( oh mrs ! ) left leg is bottom right, right leg is top left.. if you get what I mean .

MANY MANY THANKS.. I WILL resurrect this Digital Freeview Box !!! lol.

[EdoNork]

Re: Can anyone identify this cap?

2,2nF
1400VAC support in X configuration
1250VAC support in Y configuration
Tolerance M=20%

[Evil Lurker]

Re: Can anyone identify this cap?

I'm new to both this board and electronics, but that would appear to be a "y-cap" . Its function is to provide filtering from live to neutral or earth if I understand correctly. I'm further assuming that the numbers printed on the front are of its specs, not of the actual part number.

[mike-hock]

Re: Can anyone identify this cap?

2,2nF
1400VAC support in X configuration
1250VAC support in Y configuration
Tolerance M=20%

Hmm i suppose it's obvious when you know what you're looking at, me, personally, CLUELESS !
Just as well I'm only replacing like for like, and not trying to bodge things

So, being a numpty.. what would I go into a shop and ask for?
I'll guess it's a metal film cap of some sort ( they all have their own names dont they... I've named this one Barry for now
he's good mates with his friend above ( previously known as Robin red blob ) lol.

Thanks for the help, I dont know what I'd have done without this web forum
( well, I do, I'd have gone out and bought a new freeview box ha ha )