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Old 28th March 2013, 09:41 AM   #11
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The black plastic disc is the vent. Rubycon have a very good name and to go to the expense of purchasing thousands of fake cans and then printing Rubycon on the plastic sleeve, seems very far fetched to me as the retail price of capacitors like these is only a few pennies. What would the point be?
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Old 28th March 2013, 09:53 AM   #12
SY is offline SY  United States
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Printing fake plastic sleeves is between trivially cheap and zero. Especially when you look at it as marginal cost- they have to print a sleeve anyway, what does it cost to have it say "Rubycon" rather than "Excellent YangTze Capacitor"?
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Old 28th March 2013, 09:54 AM   #13
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I think he means, why do you care if it's "really" Brand X if it works properly?
Even if it works properly, I would keep wondering "for how long?". It's like hiring a helper with a fake ID, I would try not to have the person in my home even if the person can work well.
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Old 28th March 2013, 09:57 AM   #14
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Originally Posted by Harleyjon View Post
The black plastic disc is the vent. Rubycon have a very good name and to go to the expense of purchasing thousands of fake cans and then printing Rubycon on the plastic sleeve, seems very far fetched to me as the retail price of capacitors like these is only a few pennies. What would the point be?
I don't know if you can see it from the picture, there doesn't seem to be any venting mechanism on the can, just a plastic disc on top of the can.

I know it can seem hard to understand why would a person want to fake something that isn't exactly expensive. But if people can go through all that trouble to fake eggs, that sells just a few cents less than the real thing, printing a few fake labels is nothing.
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Old 28th March 2013, 10:14 AM   #15
SY is offline SY  United States
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It's nothing I'd buy- I only deal with reputable, large distributors like Mouser, Allied, Digikey, Newark... my assumption is always that if it's eBay or some private dealer from Asia, it's likely to be fake. The fakes may or may not work well, but it's not what I want in my equipment. I was just explaining what JMF was saying.
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Old 28th March 2013, 10:39 AM   #16
FoMoCo is offline FoMoCo  United States
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Who cares anyway?
Do they measure well or not?
As in capacitance/voltage/ESR/etc.
There was one brand of fake capacitor (Lelon?)that had something wrong with the electrolyte. It would measure just fine. At first it worked fine. But, it aged terribly fast. In a few years it would measure wrong, explode, leak, damage other components, etc. For that reason, it's hard to tell by measurements or inspection.
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Old 28th March 2013, 01:30 PM   #17
oshifis is offline oshifis  Hungary
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Is this a nested fake?
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File Type: jpg Fake_capacitor.jpg (61.3 KB, 242 views)
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Old 28th March 2013, 01:42 PM   #18
JMFahey is offline JMFahey  Argentina
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Originally Posted by SY View Post
I think he means, why do you care if it's "really" Brand X if it works properly?
Yes, that's the point.

After all, the thread did not comment a single word about *how* it worked, only whether "they" could find it in a catalog or not, so I want to put things in perspective.
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Old 28th March 2013, 02:08 PM   #19
SY is offline SY  United States
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Originally Posted by FoMoCo View Post
There was one brand of fake capacitor (Lelon?)that had something wrong with the electrolyte. It would measure just fine. At first it worked fine. But, it aged terribly fast.
As Dell found out the hard way, it doesn't even have to be fake for that problem to happen!

oshifis, may I assume that this cap did not come from England?
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Old 28th March 2013, 03:18 PM   #20
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Is this a nested fake?
I don't know, you may have to open that up.

But then we won't know how it measures.
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