How to spot a counterfeit Capacitor

[Cartel]

Please tell me are these fakes?

http://www.aliexpress.com/item/20pcs-33uF-50V-Japan-ELNA-R2B-Series-8x11-5mm-50V33uF-RBP2-Bipolar-Audio-Capacitor/32549759943.html

http://www.aliexpress.com/item/20pcs-47uF-35V-Japan-ELNA-RJB-Series-6-3x11-5mm-35V47uF-Audio-capacitor/32548410090.html

http://www.aliexpress.com/item/20pcs-22uF-16V-ELNA-ARS-Series-6-3x11mm-16V22uF-SILMIC-FOR-AUDIO-Aluminum-Electrolytic-Capacitors-Free/32266684902.html

http://www.aliexpress.com/item/100pcs-25V100uF-NIPPON-KY-Series-6-3x11mm-High-Quality-Original-Electrolytic-Capacitors-FREE-SHIPPING/32257235632.html

http://www.aliexpress.com/item/20pcs-100uF-16V-ELNA-RA3-Series-5x11mm-FOR-AUDIO-16V100uF-Aluminum-Electrolytic-Capacitors-Free-Shipping/32265346431.html

http://www.aliexpress.com/item/20pcs-10uF-35V-ELNA-ARS-Series-6-3x11mm-10V35uF-SILMIC-AUDIO-Capacitor/32562983330.html

http://www.aliexpress.com/item/50pcs-47uF-25V-NIPPON-KY-Series-5x11mm-Low-ESR-25V47uF-Aluminum-Electrolytic-Capacitor/32561600894.html

http://www.aliexpress.com/item/5pcs-4700uF-25V-NICHICON-HE-Series-16x35mm-Extremely-Low-Impdance-25V4700uF-Aluminum-Electrolytic-Capacitors/32334817132.html

http://www.aliexpress.com/item/10pcs-1000uF-25V-ELNA-RE3-Series-10x16mm-High-Quality-25V1000uF-Aluminum-Electrolytic-Capacitor/32387284089.html

http://www.aliexpress.com/item/50pcs-0-1uF-50V-RUBYCON-YXA-Series-Original-50V0-1uF-Aluminum-Electrolytic-Capacitor/32562872037.html

http://www.aliexpress.com/item/20pcs-220uF-35V-Japan-NICHICON-HV-Series-8x11-5mm-High-Ripple-Low-Impedance-35V220uF-Aluminum-Electrolytic/32554280934.html

http://www.aliexpress.com/item/10pcs-470uF-25V-Japan-ELNA-RJ4-Series-10x12-5mm-25V470uF-Audio-capacitor/32554651600.html

http://www.aliexpress.com/item/10pcs-1uF-50V-NIPPON-NCC-KY-Series-5x11mm-Low-ESR-50V1uF-Aluminum-Electrolytic-Capacitor/32561894725.html

 

[Schmoburger]

speaking house on fire, and installing tantilums in the LC-III.

did you happen to remember that C22 has an error on the silk screen?

witch is probably ok with Stock Electrolytic… or even ceramics.  but Not tantilums… they can catch fire and burn.

https://www.thinkclassic.org/viewtopic.php?id=97

Holy crap on a cracker.... This makes me a little uncomfortable, and makes me far happier to just replace electrolytics every 10 years.

Also I am curious as to what this error is at C22 on certain LCIII's.

 

[Paralel]

Isn't the error that the polarity indication at c22 is reversed on the silk screen?

 

[Schmoburger]

Isn't the error that the polarity indication at c22 is reversed on the silk screen?

Oh dear...

 

[Paralel]

Yeah, you can see how that wouldn't go well with a tant

 

[uniserver]

Please tell me are these fakes?

http://www.aliexpress.com/item/20pcs-33uF-50V-Japan-ELNA-R2B-Series-8x11-5mm-50V33uF-RBP2-Bipolar-Audio-Capacitor/32549759943.html

http://www.aliexpress.com/item/20pcs-47uF-35V-Japan-ELNA-RJB-Series-6-3x11-5mm-35V47uF-Audio-capacitor/32548410090.html

http://www.aliexpress.com/item/20pcs-22uF-16V-ELNA-ARS-Series-6-3x11mm-16V22uF-SILMIC-FOR-AUDIO-Aluminum-Electrolytic-Capacitors-Free/32266684902.html

http://www.aliexpress.com/item/100pcs-25V100uF-NIPPON-KY-Series-6-3x11mm-High-Quality-Original-Electrolytic-Capacitors-FREE-SHIPPING/32257235632.html

http://www.aliexpress.com/item/20pcs-100uF-16V-ELNA-RA3-Series-5x11mm-FOR-AUDIO-16V100uF-Aluminum-Electrolytic-Capacitors-Free-Shipping/32265346431.html

http://www.aliexpress.com/item/20pcs-10uF-35V-ELNA-ARS-Series-6-3x11mm-10V35uF-SILMIC-AUDIO-Capacitor/32562983330.html

http://www.aliexpress.com/item/50pcs-47uF-25V-NIPPON-KY-Series-5x11mm-Low-ESR-25V47uF-Aluminum-Electrolytic-Capacitor/32561600894.html

http://www.aliexpress.com/item/5pcs-4700uF-25V-NICHICON-HE-Series-16x35mm-Extremely-Low-Impdance-25V4700uF-Aluminum-Electrolytic-Capacitors/32334817132.html

http://www.aliexpress.com/item/10pcs-1000uF-25V-ELNA-RE3-Series-10x16mm-High-Quality-25V1000uF-Aluminum-Electrolytic-Capacitor/32387284089.html

http://www.aliexpress.com/item/50pcs-0-1uF-50V-RUBYCON-YXA-Series-Original-50V0-1uF-Aluminum-Electrolytic-Capacitor/32562872037.html

http://www.aliexpress.com/item/20pcs-220uF-35V-Japan-NICHICON-HV-Series-8x11-5mm-High-Ripple-Low-Impedance-35V220uF-Aluminum-Electrolytic/32554280934.html

http://www.aliexpress.com/item/10pcs-470uF-25V-Japan-ELNA-RJ4-Series-10x12-5mm-25V470uF-Audio-capacitor/32554651600.html

http://www.aliexpress.com/item/10pcs-1uF-50V-NIPPON-NCC-KY-Series-5x11mm-Low-ESR-50V1uF-Aluminum-Electrolytic-Capacitor/32561894725.html

its hard to say for sure .. but most likely yes, at least some of them are fakes.

ELNA is a brand i have never been happy with... i just don't think they make a good cap.

Some may disagree with me... but i am a huge fan of panasonic caps. (when it comes to tin can lytics)

SMT / or Radial.

Cartel -- i am not sure where you are from... but if you are planning work on your own stuff, Digikey, is really a fantastic 

resource for caps. Even their least expensive cap will still be one you can trust.

 

[Cartel]

its hard to say for sure .. but most likely yes, at least some of them are fakes.

ELNA is a brand i have never been happy with... i just don't think they make a good cap.

Some may disagree with me... but i am a huge fan of panasonic caps. (when it comes to tin can lytics)

SMT / or Radial.

Cartel -- i am not sure where you are from... but if you are planning work on your own stuff, Digikey, is really a fantastic 

resource for caps. Even their least expensive cap will still be one you can trust.

OK thanks. I am recapping a CB radio. (Courier Centurion 40D and a Cobra 135XLR)

I googled and seen this forum...

I just cant afford $0.78-$1.70  for each cap, the prices are ridiculous, plus the exchange and shipping to Canada, forget it.

I got all the caps, plus 6-7 different values of tantalums from the same store.

I also bought this: http://www.aliexpress.com/item/LCR-T4-LCD-Backlight-ESR-Meter-Transistor-Tester-Diode-Triode-Capacitance-SCR-Inductance-Tester-New-Promotion/32455948350.html

to test every cap before I install them.

The tester is very accurate and reviewed here:

 

[uniserver]

oh haha... wow that is awesome that general cap questions are coming to the forum...  Yeah i just re-capped a Kenwood TS50s... it had all leaky tin cans too... ham radio is suffering just like lot of the other vintage electronics hobbies

There are some inexpensive brands you can buy at mouser too.

LEION is ok!!

http://www.mouser.com/ProductDetail/Lelon/RGA471M1CBK-1012G/?qs=sGAEpiMZZMvwFf0viD3Y3ZPeeWspSkPKoY6yy7OxhOk%3d

 

[uniserver]

also keep in mind ...  when testing the Counterfeit caps with an esr meter they almost always test good.

It seems like most of general uses for caps, counterfeits just might work anyways...  but use in a SMPS,  they last all of about 20 seconds before they explode.

 

[Cartel]

oh haha... wow that is awesome that general cap questions are coming to the forum...  Yeah i just re-capped a Kenwood TS50s... it had all leaky tin cans too... ham radio is suffering just like lot of the other vintage electronics hobbies

There are some inexpensive brands you can buy at mouser too.

LEION is ok!!

http://www.mouser.com/ProductDetail/Lelon/RGA471M1CBK-1012G/?qs=sGAEpiMZZMvwFf0viD3Y3ZPeeWspSkPKoY6yy7OxhOk%3d

Yikes...Kenwood got caught up in the badcap saga too.

 

[Johnnya101]

Wow never knew anyone would go through the trouble to do this...

 

[techknight]

Yes, kenwood did get caught up in the bad cap saga, I fixed a tri-band unit a couple years back, accidentally setting off the alert siren playing with the DTMF mic... Whoops. 

 

[MacintoshMan1999]

would like to try some of the Chinese branded caps, just to see, out of interest if they are up to standard.

That would be great! Will be interesting to see the results.

 

[techknight]

Yea.... That member isnt here anymore, so unless someone else picks up the ball, thatll never happen.