WIMA show exact dimensions for all their caps on the web site:
Film capacitors Made in Germany. - WIMA – Competence in Capacitors
You could always email them your pictures and ask. There is an address at the bottom of the page.
Film capacitors Made in Germany. - WIMA – Competence in Capacitors
You could always email them your pictures and ask. There is an address at the bottom of the page.
I don´t see them as "swollen" but instead as gross fakes.
As in a standard plain vanilla Polyester cap, bought over the counter for low cost:
which has then been crudely potted inside a rectangular block of reddish-orange coloured Epoxy or Polyester resin.
Which in general contract on curing and here show the shape of the real cap inside; I bet they used a homemade silicone mold which "followed" the resin contraction.
Look at the crude rough edges .
Compare them to real, Factory encapsulated capacitors, which for precision and repeatable, perfect shape, are first put inside an injected plastic case which is then filled with liquid resin, the case edge is clearly visible, as well as the difference between plastic case and resin filling.
Again, a very crude fake.
As in a standard plain vanilla Polyester cap, bought over the counter for low cost:
An externally hosted image should be here but it was not working when we last tested it.
which has then been crudely potted inside a rectangular block of reddish-orange coloured Epoxy or Polyester resin.
Which in general contract on curing and here show the shape of the real cap inside; I bet they used a homemade silicone mold which "followed" the resin contraction.
Look at the crude rough edges .
Compare them to real, Factory encapsulated capacitors, which for precision and repeatable, perfect shape, are first put inside an injected plastic case which is then filled with liquid resin, the case edge is clearly visible, as well as the difference between plastic case and resin filling.
Again, a very crude fake.
Last edited:
Mooly.... remember the booster cap (9,1-10-11-12 nF, typically 1600v) in the Hi tension circuit on the old CRT color tv´s???
They used to do that all the time, just before they shorted, no matter if Philips, Wima or other brands. On seldom occasions they also caught fire. Btw, they really really stink, when that happens.
Have no idea though, how this could happen on a low voltage circuit.
9.1 as in nano farads as in Philips G11
Oh yes, I remember those.All the low voltage ones in this thread look like there is something else buried in the package. They all look to much the same.
9.1 as in nano farads as in Philips G11
All the low voltage ones in this thread look like there is something else buried in the package. They all look to much the same.
Nano farads is what I wrote (nF)
.... And I think you mean K11 as in the series K9-K11-K12-K30-K40 etc. Typically inside, you have a stack/roll of film/foil. If they somewhere inside burn a pico, tiny hole between 2 layers, sometimes its not enough to short, but there will be a DC resistance permanently, that´ll heat up the cap. In the end they´ll look like these in the pictures. What I can´t grasp is, how this can happen to 63v caps in a dac, typically powered by +-5 to +-14 volts. I for one don´t think, they´re fake, but I could really do with OP cutting one open and carefully unroll the film layers.
EDIT. Looking at the letters on the 100nF/63, they look pretty fake
Last edited:
Please crush open one of the fakes, I bet you´ll find the Hi Fi equivalent of these fake Gibson Bumblebee caps: a cheap modern one inside an old style plastic body and with old style coloured bands:
Funny thing, I bet the modern ones are much better than the older ones, and are cheaper just by incredible advances in automation and mass production.
But of course the old ones can be sold for $50 a piece.
Funny thing, I bet the modern ones are much better than the older ones, and are cheaper just by incredible advances in automation and mass production.
But of course the old ones can be sold for $50 a piece.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.