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Old 03-14-2020, 07:27 PM   #1
kazzek
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Default Rubycon BXA genuine or not?

I've been looking around for capacitors to replace in a power supply circuits in an audio equipment. These came from China. These are axial and Rubycon.com doesn't have any info about axial BXA type.
http://www.rubycon.co.jp/en/catalog/...inum/e_bxa.pdf
Genuine or fake?
Thx!
Attached Images
File Type: jpg BXA_1.jpg (441.9 KB, 31 views)
File Type: jpg BXA_2.jpg (399.1 KB, 32 views)
File Type: jpg BXA_3.jpg (505.3 KB, 26 views)
File Type: jpg BXA_4.jpg (462.4 KB, 30 views)
File Type: jpg BXA_5.jpg (408.3 KB, 25 views)

Last edited by kazzek; 03-14-2020 at 07:30 PM..
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Old 03-14-2020, 07:46 PM   #2
eccerr0r
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Default Re: Are these for real??

wow... probably fake... they should be radial and high voltage. But if the capacitance checks out and doesn't blow up at 25V, at line frequencies it's probably not a big deal.
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Old 03-14-2020, 07:56 PM   #3
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Default Re: Rubycon BXA genuine or not?

I don't see any 25v caps in that series, the BXA seem to be 160v~450v, but let me guess... they were cheap.
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Old 03-14-2020, 10:39 PM   #4
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Default Re: Rubycon BXA genuine or not?

Thanks, so you are saying these are counterfeit capacitors, right? attached is the photo of the one that needs to be replaced.
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File Type: jpg Rubycon.jpg (133.9 KB, 25 views)

Last edited by kazzek; 03-14-2020 at 11:16 PM..
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Old 03-15-2020, 12:12 AM   #5
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Default Re: Rubycon BXA genuine or not?

show the other side of the original please.
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Old 03-15-2020, 12:09 PM   #6
R_J
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Default Re: Rubycon BXA genuine or not?

Digikey carries Illinois Capacitor, 10,000µf/25v and 35v Axial lead. I doubt its a smps so these should work ok.
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Old 03-15-2020, 12:35 PM   #7
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Default Re: Rubycon BXA genuine or not?

Thanks for getting back to me. Have exactly the same dimensions and look the same with an exception of a small hole which can be seen in the third photo. The original ones do not have series info printed on the side and I think they were rated 85C.
Attached Images
File Type: jpg Rubycon1.jpg (32.9 KB, 23 views)
File Type: jpg Rubycon2.jpg (24.7 KB, 23 views)
File Type: png Rubycon3.png (124.4 KB, 35 views)

Last edited by kazzek; 03-15-2020 at 01:11 PM..
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Old 03-15-2020, 02:18 PM   #8
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Default Re: Rubycon BXA genuine or not?

Bung looks highly suspicious!
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Old 03-16-2020, 04:05 PM   #9
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Default Re: Rubycon BXA genuine or not?

Rubycon BXA are for LED and inverters and they are radial, not axial. They are made for circuits with high frequencies and starts at 160V like written by R_J.

I suspect that the ones bought from you were not genuine ones.
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Old 03-16-2020, 06:01 PM   #10
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Default Re: Rubycon BXA genuine or not?

if you open it up, you might find a whole 'nother capacitor inside (I said might)
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Old 03-16-2020, 07:32 PM   #11
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Default Re: Rubycon BXA genuine or not?

I don't know if I would call them fake, more likely old stock, I have similar caps from the 1990's
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Old 03-16-2020, 11:12 PM   #12
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Default Re: Rubycon BXA genuine or not?

Thanks again for all your feedback. Cartainly I can have them installed. I'm positive that the gear is going to work just fine. What I don't want to have is the situation that after 4 weeks or so caps will fail.

Last edited by kazzek; 03-16-2020 at 11:31 PM..
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Old 03-20-2020, 05:44 PM   #13
kazzek
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Default Re: Rubycon BXA genuine or not?

Here is another one also BXA series. Radial but low voltage.

https://www.ebay.com/itm/5PCS-Electr...oAAOSwU8hY6IKw
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File Type: jpg Other_BXA.jpg (39.6 KB, 12 views)
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Old 03-22-2020, 08:53 AM   #14
Hitto
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Default Re: Rubycon BXA genuine or not?

That one is not genuine for sure.
Rubycon capacitors do not have concentric lines on the bottom:



They measure decent though I would not use them in demanding application.

Genuine Rubycon capacitors should be this way:


I advise looking for a genuine component.

Last edited by Hitto; 03-22-2020 at 09:10 AM..
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