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Old 22nd June 2012, 03:10 PM   #1
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Default Panasonic 22.000 uF fake caps?

Can anyone help explain what happens to an electrolytic cap "Panasonic" 22,000 uF x 63 volts, thus exploding. It was bought at a bargain store Analog Metric (Panasonic 22000uf 63V AUDIO Electrolytic Capacitor_Panasonic_Capacitor_Analog Metric - DIY Audio Kit)

thank you
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Old 22nd June 2012, 03:18 PM   #2
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They don't look original to me. If the are not used with the wrong polarity you might conclude they are fakes. I would count out that is is an exemplary faulty unit when it is an original Panasonic cap.

I paid less for original Kendeil caps....
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Old 22nd June 2012, 05:57 PM   #3
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These only seem to be available from HK sellers. I can't find a similar Panasonic capacitor from any reputable distributor. The closest match I can find is 40mm in diameter, not 35mm.

It makes the situation even more suspicious that the seller you linked to also sells a nearly identical "Hitachi" cap....

Hitachi HCG FA 22000uf 63V Electrolytic Capacitor_others_Capacitor_Analog Metric - DIY Audio Kit
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Old 22nd June 2012, 09:11 PM   #4
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That seller should be on a blacklist.
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Old 22nd June 2012, 09:25 PM   #5
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Hey I bought some capacitors no too long ago and they blown like pop corn. I tried 2 with the same resulted. At the beginning they started to get sponged, hotter and then they blown up. I trashed all 12. They looked same as your after they blow up. Save those for the 4 of July.
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Old 22nd June 2012, 09:53 PM   #6
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It goes to show that E*ay brought the hobby good things but quite questionable stuff as well. Not the fault of E*ay of course but it is not the same as an official distributor of brand stuff. I would buy large can caps from a normal distributor just to be sure.
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Old 22nd June 2012, 10:14 PM   #7
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I never buy parts on ebay, this is one of the good reasons.
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Old 22nd June 2012, 10:23 PM   #8
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The OP bought the parts from a dedicated webshop, not ebay. Yes ebay is an easy outlet for sellers of fake parts, but to say that one should never buy any parts on ebay because they're all fakes is a little extreme.

Most of the time it's pretty easy to get an idea if the parts you are buying have a high chance of being fakes or not, you just have to pay attention and maybe do a little research.
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Old 22nd June 2012, 10:31 PM   #9
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I bought a good number of vacuum tubes on Ebay, and haven't had much problem - there was one tube that looked used that was described as NOS, but the seller was only asking about 5 bucks, so I didn't complain.

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Old 22nd June 2012, 10:33 PM   #10
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They look very dubious to me. There is a reason that the cheapest decent caps are about £10 each for 63v 22kuF! I suspect I've had fake LM3886's and a short lived CS8412 all in kits from china and my green dac from Analogue metric has some very dubious looking nichicon fine gold smoothers!!!

Never buy caps direct from china, its just far too easy to print heatshrink and sell ant thing on as "For Audio" etc. I suspect that the heatsrhink is on the wrong way round and you've connected that cap in reverse. You should remove the other caps and check the markings on the solder tags to see if the wrapper was the right way round.
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