Fake KZE 680uf 16v?

**jayjr1105** · 10-19-2020, 06:47 AM

I bit on a lot of 25 of these. Judging by the sellers excellent feedback (99.9) I just assume these are just old inventory. Thoughts? What type of vent/bung should I see on an authentic one?

https://www.ebay.com/itm/680uF-16V-N...5/401011429492

**dmill89** · 10-19-2020, 09:13 AM

Hmm..., the one picture in the listing isn't much to go by, but the text seems a little "off".

Here's a pic of the same cap I bought from a known reputable source (Digikey) for comparison:

**jayjr1105** · 10-19-2020, 09:20 AM

Quote:

Originally Posted by dmill89

Hmm..., the one picture in the listing isn't much to go by, but the text seems a little "off".

Here's a pic of the same cap I bought from a known reputable source (Digikey) for comparison:

Thanks for the pics, I'll compare once I receive them. Yeah the text is a little light compared to yours. The bung looks correct and they don't have vent pics. Hopefully the vent is mercedes style and not an X. I got some fake Sanyo's with an X and not a K vent. I pretty much knew those were going to be fake.

**RJARRRPCGP** · 10-19-2020, 01:07 PM

Suspect that a jagged print is just as bad!
When it looks like a game with aliasing!

**momaka** · 10-19-2020, 04:12 PM

Let us know what you find.

The seller is based off of Potomac, MD, which isn't that far from me.
Would be a good deal if they are genuine.

I don't think the text can be used too much to tell if they are genuine or not. It does look a bit "faded", or at least not as precise as on known genuine KZE's I've gotten before. But then again, I've also seen the text vary slightly between different cap batches made in different years on a lot of the Japanese caps.

And at least from the picture the seller provided, the bungs look genuine. If they were flat and not going beyond the can, I'd definitely flag them as counterfeit. But on these, the bung appears extruded like it should be on good KZE caps.

*EDIT*
I looked through the seller's entire e-cap inventory, and I saw a lot of old/retired/discontinued cap series like KME and SME (from UCC), along with PF and PL (Nichicon).

Here are a few other listings of interest:
https://www.ebay.com/itm/2200uF-16V-.../161859188724?
https://www.ebay.com/itm/1000uF-16V-.../161859345192?
https://www.ebay.com/itm/6800uF-6-3V.../161859157688?

Particularly, have a look at the second image in those listings.
A lot of these look like old stock. For example, the Nichicon PL caps in the last link appear to have a date code of year 2000. So those are already 20 year old caps, more or less.

And with that said, I think there is actually a good chance those KZEs you bought may actually turn out to be genuine, but may be slightly older stock. In any case, that's still not a bad deal. For the very old caps, though, I imagine they would need reforming after all of those years in storage. Probably still OK to use, but I'd just be a little more careful with them at this age.

**jayjr1105** · 10-22-2020, 09:58 AM

Seem legit to me, sorry for the crap photo's, I used my tablet instead of my phone because it was all I had at the time.

This said 665uf - vloss 1.6%

**ChaosLegionnaire** · 10-22-2020, 01:56 PM

close up pics of the bung please! usually thats a dead giveaway.

**jayjr1105** · 10-22-2020, 02:08 PM

Quote:

Originally Posted by ChaosLegionnaire

close up pics of the bung please! usually thats a dead giveaway.

I'll get some nice clear shots later tonight. I went home for lunch and they were in the mailbox but I left my phone in the car so I had to take pics with my horrible tablet. The Bungs looked pretty much like the genuine ones linked above. I'll still post pics later on

PICS!

**jayjr1105** · 10-22-2020, 04:51 PM

Link to pics listed on previous post. Won't let me edit it anymore to move it here. Link is to imgur album

**linuxguru** · 10-23-2020, 08:11 AM

It looks legit to me - there are several different plants as well as contract production from Korea Chemicon and other affiliates. Japanese production tends to have thin vents and a shiny aluminium finish, while contract production tends to have wider vents and a slightly matt aluminium finish. If it measures within spec on capacitance and ESR, it's likely to be legit.

**Per Hansson** · 10-23-2020, 08:25 AM

Also notice in the eBay AD there is a date on the pictured shipping box: 27/11/2005
This matches the "5 N F (3)" UCC date code of the capacitor well (translates to: 2005 - November - 6 - (Plant 3).
So in other words I would reform these caps before use to be on the safe side.

**jayjr1105** · 10-23-2020, 08:37 AM

Quote:

Originally Posted by Per Hansson

Also notice in the eBay AD there is a date on the pictured shipping box: 27/11/2005
This matches the "5 N F (3)" UCC date code of the capacitor well (translates to: 2005 - November - 6 - (Plant 3).
So in other words I would reform these caps before use to be on the safe side.

How would one "reform" these?

**Per Hansson** · 10-23-2020, 08:51 AM

Follow the link (in the word reform) in my previous post.

**jayjr1105** · 10-23-2020, 09:22 AM

Quote:

Originally Posted by Per Hansson

Follow the link (in the word reform) in my previous post.

Sweet, so basically if I have a bench supply I should be good? How many can I do at a time with a single 1K 1/4 watt resistor?

Is this acceptable? Found a beefy 1.5K resistor

**momaka** · 10-23-2020, 06:42 PM

Quote:

Originally Posted by jayjr1105

How many can I do at a time with a single 1K 1/4 watt resistor?

As many as you like - at least for low voltage caps like these anyways. Now, if dealing with caps where the reform voltage has to be so high as to cause significant dissipation over the series resistor, then you have to take that into account too.

But since that's not the case here, you can do even all 25 caps at once, if you like. The only downside of using a single 1 KOhm (or 1.5 KOhm resistor in your case) is that the reforming will take longer before the caps reach full voltage. For this reason, I prefer to put no more than a few caps per resistor (or ideally one cap per resistor.) But in any case, the reforming will work.

I'd say leave them connected like that for a few hours, and they should be good to use again.

Quote:

Originally Posted by jayjr1105

Is this acceptable? Found a beefy 1.5K resistor
https://i.imgur.com/81fU7Ku.png

That will do.

Quote:

Originally Posted by Per Hansson

Also notice in the eBay AD there is a date on the pictured shipping box: 27/11/2005
This matches the "5 N F (3)" UCC date code of the capacitor well (translates to: 2005 - November - 6 - (Plant 3).
So in other words I would reform these caps before use to be on the safe side.

Yup.
Looks like the seller is selling leftover production or overstock NOS capacitors.
For $7 total for 25 slightly older/NOS caps, that's not a bad deal (comes out to about 28 cents per cap.)

10-19-2020, 06:47 AM	#1
jayjr1105 Badcaps Veteran Join Date: Jan 2018 City & State: Central PA My Country: United States Line Voltage: 120VAC 60Hz I'm a: Hardcore Geek Posts: 248	Fake KZE 680uf 16v? I bit on a lot of 25 of these. Judging by the sellers excellent feedback (99.9) I just assume these are just old inventory. Thoughts? What type of vent/bung should I see on an authentic one? https://www.ebay.com/itm/680uF-16V-N...5/401011429492 __________________ -------------------------------------------------------------- Ryzen 3600x 16GB Patriot 3600MHz MSI B450 Gaming Plus MSI Air Boost Vega 56 Acer 32" 1440P Freesync Rosewill Capstone 750W -------------------------------------------------------------- Hakko FX-888D Station FX-8802 Iron MG Chem .8mm 63/37 RA 2.2% Last edited by jayjr1105; 10-19-2020 at 08:07 AM..

10-19-2020, 01:07 PM	#4
RJARRRPCGP Badcaps Veteran Join Date: Jul 2004 City & State: North Springfield, Vermont My Country: USA Line Voltage: 118-127V 59-63.5 Hz-> actualizo: pérdido de voltaje I'm a: Knowledge Seeker Posts: 6,040	Re: Fake KZE 680uf 16v? Suspect that a jagged print is just as bad! When it looks like a game with aliasing! __________________ ASRock B550 PG Velocita Ryzen 5 "Vermeer" 5600X 32 GB G.Skill Trident Z Neo F4-3600C18D-32GTZN Sapphire Nitro+ Radeon RX 6600 XT eVGA Supernova G3 750W Western Digital Black SN850 1TB NVMe SSD "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr"!" -mí mismo "There's nothing more unattractive than a chick smoking a cigarette" -Topcat "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

10-19-2020, 04:12 PM	#5
momaka master hoarder Join Date: May 2008 City & State: VA (NoVA) My Country: U.S.A. Line Voltage: 120 VAC, 60 Hz I'm a: Hobbyist Tech Posts: 10,862	Re: Fake KZE 680uf 16v? Let us know what you find. The seller is based off of Potomac, MD, which isn't that far from me. Would be a good deal if they are genuine. I don't think the text can be used too much to tell if they are genuine or not. It does look a bit "faded", or at least not as precise as on known genuine KZE's I've gotten before. But then again, I've also seen the text vary slightly between different cap batches made in different years on a lot of the Japanese caps. And at least from the picture the seller provided, the bungs look genuine. If they were flat and not going beyond the can, I'd definitely flag them as counterfeit. But on these, the bung appears extruded like it should be on good KZE caps. EDIT I looked through the seller's entire e-cap inventory, and I saw a lot of old/retired/discontinued cap series like KME and SME (from UCC), along with PF and PL (Nichicon). Here are a few other listings of interest: https://www.ebay.com/itm/2200uF-16V-.../161859188724? https://www.ebay.com/itm/1000uF-16V-.../161859345192? https://www.ebay.com/itm/6800uF-6-3V.../161859157688? Particularly, have a look at the second image in those listings. A lot of these look like old stock. For example, the Nichicon PL caps in the last link appear to have a date code of year 2000. So those are already 20 year old caps, more or less. And with that said, I think there is actually a good chance those KZEs you bought may actually turn out to be genuine, but may be slightly older stock. In any case, that's still not a bad deal. For the very old caps, though, I imagine they would need reforming after all of those years in storage. Probably still OK to use, but I'd just be a little more careful with them at this age. Last edited by momaka; 10-19-2020 at 04:41 PM..

10-22-2020, 09:58 AM	#6
jayjr1105 Badcaps Veteran Join Date: Jan 2018 City & State: Central PA My Country: United States Line Voltage: 120VAC 60Hz I'm a: Hardcore Geek Posts: 248	Re: Fake KZE 680uf 16v? Seem legit to me, sorry for the crap photo's, I used my tablet instead of my phone because it was all I had at the time. This said 665uf - vloss 1.6% Last edited by jayjr1105; 10-22-2020 at 10:30 AM..

10-22-2020, 01:56 PM	#7
ChaosLegionnaire HC Overclocker Join Date: Jul 2012 City & State: Singapore My Country: Singapore Line Voltage: 240VAC 50Hz I'm a: Hobbyist Tech Posts: 2,925	Re: Fake KZE 680uf 16v? close up pics of the bung please! usually thats a dead giveaway.

10-22-2020, 04:51 PM	#9
jayjr1105 Badcaps Veteran Join Date: Jan 2018 City & State: Central PA My Country: United States Line Voltage: 120VAC 60Hz I'm a: Hardcore Geek Posts: 248	Re: Fake KZE 680uf 16v? Link to pics listed on previous post. Won't let me edit it anymore to move it here. Link is to imgur album

10-23-2020, 08:11 AM	#10
linuxguru Badcaps Veteran Join Date: Apr 2005 Posts: 1,560	Re: Fake KZE 680uf 16v? It looks legit to me - there are several different plants as well as contract production from Korea Chemicon and other affiliates. Japanese production tends to have thin vents and a shiny aluminium finish, while contract production tends to have wider vents and a slightly matt aluminium finish. If it measures within spec on capacitance and ESR, it's likely to be legit.

10-23-2020, 08:25 AM	#11
Per Hansson Super Moderator Join Date: Jul 2005 City & State: ---- My Country: Sweden Line Voltage: 230v 50Hz I'm a: Knowledge Seeker Posts: 5,138	Re: Fake KZE 680uf 16v? Also notice in the eBay AD there is a date on the pictured shipping box: 27/11/2005 This matches the "5 N F (3)" UCC date code of the capacitor well (translates to: 2005 - November - 6 - (Plant 3). So in other words I would reform these caps before use to be on the safe side. __________________ "The one who says it cannot be done should never interrupt the one who is doing it." Last edited by Per Hansson; 10-23-2020 at 08:27 AM..

10-23-2020, 08:51 AM	#13
Per Hansson Super Moderator Join Date: Jul 2005 City & State: ---- My Country: Sweden Line Voltage: 230v 50Hz I'm a: Knowledge Seeker Posts: 5,138	Re: Fake KZE 680uf 16v? Follow the link (in the word reform) in my previous post.

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