Real or fake?

[csh]

Friend brought some caps to test on my new chinese T3/T4 :-)
Since he got it from ebay I'd like to hear your opinion.
I never used caps from ebay out of fear they would be fakes, these look really good to me, but I'm no expert.

NCC KY 47uF/25V 5x11mm - are they supposed to have these stamps on top of can?
There isn't eny info about it in the datasheet.
Measures 49uF with ESR 0.36 ohm.

Rubycon YXG 4700/16V 16x31mm- There is "K" vent, font and sleeving looks good, bungs also.
Measuring 4980uF and ESR 0.00
Probably out of range for the meter?

[Jooo]

Re: Real or fake?

Those are probably genuine. The Rubycons are almost 10 years old though.

[SteveNielsen]

Re: Real or fake?

The ESR reading on that tester is not the same as the manufacturer specs because it does the test at a much lower frequency. The docs address that.

[TechGeek]

Re: Real or fake?

2 things.
1) On the Nippon Chemi-Cons, where the logo is, there is no text.
2) Also, you have bulging bungs.

[csh]

Re: Real or fake?

Those are probably genuine. The Rubycons are almost 10 years old though.

You mean that line "S0624" should be something like 2006, week 24?
Probably not a good idea to use them even if they are genuine

[Sparkey55]

Re: Real or fake?

Who is the Ebay seller if you do not mind saying?

[momaka]

Re: Real or fake?

Since he got it from ebay I'd like to hear your opinion.

Do you know which seller he got it from?
There are *some* reputable sellers on eBay (like egekecu, and I think AudJade, among a few others). Just about anyone else in China / HK sells junk, though.

That said, I agree with Jooo - your capacitors look genuine indeed.

NCC KY 47uF/25V 5x11mm - are they supposed to have these stamps on top of can?

Well, I don't know about your KYs, but I have some KMGs, 10V 100 uF, in 5x11 size, and they have the same type of stamps on them above, so I think this is normal, if not even a better indicator of them being genuine. Copycats are rarely bothered with small details like that.

1) On the Nippon Chemi-Cons, where the logo is, there is no text.

That's because it's a tiny 47 uF cap. No way you can fit text there. Only the big can UCC caps have the text. The rest don't.

2) Also, you have bulging bungs.

That, I won't dispute.
But I think that, again, because these are just small 5x11 mm caps. That said, my 10V 100 uF KMGs I mentioned above don't appear to have the bung sticking out like that. Perhaps the KY and KMG can differ a bit in looks, though.

[SteveNielsen]

Re: Real or fake?

I've used older low voltage caps than that without incident. Higher voltage rated caps may benefit from being reformed if they've been unused for a long time. One example source for reforming:

http://www.vcomp.co.uk/tech_tips/reform_caps.htm

[Wester547]

Re: Real or fake?

Do you know which seller he got it from?
There are *some* reputable sellers on eBay (like egekecu, and I think AudJade, among a few others). Just about anyone else in China / HK sells junk, though.

egekecu does sell fakes amid the "genuines":

http://www.ebay.com/itm/12-Pcs-Nichi...item439b7f07ef

Those capacitors look good, but it isn't difficult to take bona fide Chemi-con and Rubycon sleeves and resleeve different capacitors with them...

[csh]

Re: Real or fake?

He brought the rubycons in a envelope that says "PC MotherBoard Capacitor Store" and also http://www.capselling.com, arrived a couple of days ago from ebay. Has a neat logo on it, well, that' a luxury package for ebay seller, i always get the goods in a plain bag. As for The NCC, i would have to check with him, i got it in a plain plastic bag, friend says they are some time older, he would have to check which seller he got them from. But it was also some store that deals primarily in electronics/caps etc.
I just searched for that PC MotherBoard store in Ebay, it says owner name is "egekecu" and he has 100% positive feedback
That site capselling resolves to some store, first time I see that chinese ebay seller has some independent store.
The rubycons are probably genuine, but where do these guys find 10y old caps?
Can someone confirm that datecode is ok?
Perhaps he can get some of his money refunded for a caps that old.

[Cartel]

Re: Real or fake?

I have some ky series 47uf caps with the code stamped on top too.
OP's kinda look crushed on the sides

[michael dranfield]

Re: Real or fake?

This is how you can tell if a cap is fake .

[stj]

Re: Real or fake?

lol that's only the big ones.
and dont wear out that photo!

[kaboom]

Re: Real or fake?

and dont wear out that photo!

better quality here:


Instead of a blue smurf inside a mushroom, you can have a blue rubycon inside a tin can! Either way, you'll be conned!

[michael dranfield]

Re: Real or fake?

lol that's only the big ones.
and dont wear out that photo!

Quite correct , the small ones only last 3 days , I bought some once and fitted 2 to a DVD player , the guy brought it back 3 days later complaining of the same fault and the caps had gassed up, they were only on the 5 volt rail !
incidentally there were green ones labeled Nichicon

If you can put empty cooking oil drums in supporting pillars instead of concrete you can put a small cap in a big can !!!!!

[chowder]

Re: Real or fake?

Aren't Sanyo caps branded Suncon nowadays? Unless these are old or lower capacitance are still Sanyo branded?

https://www.ebay.com/itm/10-Pcs-Sany...ETFFMzGGVIZKfw

From egekecu's account.

[goodpsusearch]

Re: Real or fake?

he mainly sells old stock