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Registered Member #528
Joined: Fri Feb 16 2007, 10:32PM
Location: Warsaw, Poland
Posts: 166
Very funny And think, today I bought a used 2kg 21 000uF 100V electrolytic capacitor for 7 dollars. After I saw those Chinese ones, I wonder if I didn't buy a fake
Registered Member #477
Joined: Tue Jun 20 2006, 11:51PM
Location: Seattle, WA
Posts: 546
Ha!! This is some great geek-humor About the only thing geekier would be "Chinese Pole Pig" (picture a 25kVA 14.4kV pig with a tiny audio impedance matching transformer dangling by its own leads from the underside of the lid, can filled with lead-based paint--they've gotta use it for something now, right?)
I imagine this "capacitor" thing has got to be fake. The solder joints are a bit questionable, but not nearly bad *enough*.
Registered Member #63
Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
Astounding -- a classic example of Chinese business ethics. It's not a problem for them; they've already got their money.
I've come across some fake electrolytics too -- I was curious because the case "sounded" hollow, and could be flexed/squeezed. The rolled aluminium/electrolyte inside only occupied about half the diameter and half the height of the capacitor, but they didn't have the gall (back then) to re-encapsulate an electrolytic in a larger can.
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
I suppose it's alright if you're careful where you buy your components!
Back at my old work place they bought several thousand rifa caps off what they call the 'grey market', to use in production. Several months later, appliances were failing out in the field - with a large bang and nasty smoke. This resulted in a product recall. After a bit of investigation, the caps had been stored badly (in a damp warehouse) for over 10 years!
Any guesses as to who would distribute these crazy things?
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Chinese capacitors
And think, today I bought a used 2kg 21 000uF 100V electrolytic capacitor for 7 dollars. After I saw those Chinese ones, I wonder if I didn't buy a fake 
The real capacitors are 35V and it looks like the fakes are "rated" for 50V, that's mean.
