Fake electrolytics?

bsgd · 27th July 2008, 09:14 PM

Hi all!

I just got some EPCOS 470uF/450V electrolytics.
I tried searching EPCOS website but it looks like this series number B43503 does not exist!
So, what do you guys think, fake or not?

astouffer · 27th July 2008, 09:33 PM

See if the specs for your cap match the physical size from EPCOS or another manufacturer. A while ago someone posted pics of some fake caps and they were physically small compared to a real one. In fact inside the small case was an even smaller cap!

bsgd · 27th July 2008, 10:35 PM

Quote:

Originally posted by astouffer
See if the specs for your cap match the physical size from EPCOS or another manufacturer. A while ago someone posted pics of some fake caps and they were physically small compared to a real one. In fact inside the small case was an even smaller cap!

Hehehe I dont plan on opening mine, but I really hope there isnt a 100uF 200V cap inside it!
I'll compare the size with similar epcos caps....

bsgd · 27th July 2008, 10:39 PM

Apparently size is the same as a genuine 470uF/450V cap: 35mmx50mm.
The thing is these caps were pretty cheap, and to make things worse there is no mention to them anywhere on the web.

Juergen Knoop · 27th July 2008, 11:06 PM

usually only retail products are published.
For customs products you wouldn't find any data.
Anyway the S&M (now EPCOS) B43503 datasheet ends with 330u/450V.
Maybe your local EPCOS bureau can tell you, if this could be a custom part.
regards

russo · 27th July 2008, 11:12 PM

Why you don't measure them?

bsgd · 27th July 2008, 11:23 PM

Quote:

Originally posted by Juergen Knoop
usually only retail products are published.
For customs products you wouldn't find any data.
Anyway the S&M (now EPCOS) B43503 datasheet ends with 330u/450V.
Maybe your local EPCOS bureau can tell you, if this could be a custom part.
regards

Where did you find the B43503 datasheet? I couldnt locate it anywhere...
I got these caps from a guy that has no idea where they came from. He got a box full of them and is selling them out cheap...

bsgd · 27th July 2008, 11:24 PM

Quote:

Originally posted by russo
Why you don't measure them?

I can only measure for capacitance. They do measure around 430uF, but that doesnt really mean they are real EPCOS caps.

Ty_Bower · 27th July 2008, 11:31 PM

How many did you buy? Can you spare one to cut open?

Juergen Knoop · 27th July 2008, 11:42 PM

types table:

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27th July 2008, 09:33 PM	#2
astouffer diyAudio Member Join Date: Jun 2004 Location: Pittsburgh, crumbling wasteland	See if the specs for your cap match the physical size from EPCOS or another manufacturer. A while ago someone posted pics of some fake caps and they were physically small compared to a real one. In fact inside the small case was an even smaller cap!

27th July 2008, 10:39 PM	#4
bsgd diyAudio Member Join Date: Jan 2008	Apparently size is the same as a genuine 470uF/450V cap: 35mmx50mm. The thing is these caps were pretty cheap, and to make things worse there is no mention to them anywhere on the web.

27th July 2008, 11:06 PM	#5
Juergen Knoop diyAudio Member Join Date: Jan 2007 Blog Entries: 3	usually only retail products are published. For customs products you wouldn't find any data. Anyway the S&M (now EPCOS) B43503 datasheet ends with 330u/450V. Maybe your local EPCOS bureau can tell you, if this could be a custom part. regards

27th July 2008, 11:12 PM	#6
russo diyAudio Member Join Date: Jan 2008	Why you don't measure them?

27th July 2008, 11:31 PM	#9
Ty_Bower diyAudio Member Join Date: Mar 2007 Location: Newark, DE	How many did you buy? Can you spare one to cut open?

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