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BP capacitor substitution?

ricohman

ricohman

Adventure Rider
When I ordered a bunch of caps for a project I didn't notice that two were bp caps. These caps are 10uf 35v.
I have this value in a polarized cap. Can it be used in place of a bipolar cap?
These are electrolytic caps. Can I use a film cap as electrolytic seems hard to find?
This is an Accuphase C200 preamp that I am recapping.
 
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ricohman said:
I have this value in a polarized cap. Can it be used in place of a bipolar cap?
These are electrolytic caps. This is an Accuphase C200 preamp that I am recapping.
Click to expand...

Nope..Ya gotta know where to look.
http://au.mouser.com/Passive-Compon...d/_/N-75hqw?P=1z0wrkrZ1z0yoh9Z1z0z7l5Z1z0x3xj
http://www.digikey.com/scripts/dkse...=0&newproducts=0&ptm=0&fid=0&quantity=0&PV5=9

If these are in the signal path I would go with Nichicon Muse "ES"..
http://au.mouser.com/ProductDetail/...=sGAEpiMZZMtZ1n0r9vR22RkXiisTdIAVnlIrinIWb3U=
http://www.digikey.com/product-detail/en/UES1V100MEM/UES1V100MEM-ND/2428136

Can I use a film cap ?
Click to expand...
Yes. But they would be huge and expensive.
 
Last edited:
avionic said:
Nope..Ya gotta know where to look.
http://au.mouser.com/Passive-Compon...d/_/N-75hqw?P=1z0wrkrZ1z0yoh9Z1z0z7l5Z1z0x3xj
http://www.digikey.com/scripts/dkse...=0&newproducts=0&ptm=0&fid=0&quantity=0&PV5=9

If these are in the signal path I would go with Nichicon Muse "ES"..
http://au.mouser.com/ProductDetail/...=sGAEpiMZZMtZ1n0r9vR22RkXiisTdIAVnlIrinIWb3U=
http://www.digikey.com/product-detail/en/UES1V100MEM/UES1V100MEM-ND/2428136


Yes. But they would be huge and expensive.
Click to expand...

I guess I should have mentioned that these are axial caps.
I found some Mundorf 10uf / 35VAC-100VDC at Parts Connexion so I guess I need to wait.
 
film is no problem. They are bipolar.

Generally you don't want to use a polarized part to sub for a non-polarized part. The NP caps are more expensive, and usually if a manufacturer specifies them there is some good reason for it.

On the other hand, you can use a non-polar part to sub for a polarized. An equivalent NP cap will generally be larger and more expensive than the polarized so it may not always be feasible.
 
The Mondorf caps I ordered are 10mmx20mm so they should fit fine.
Another topic about caps.
I ordered aluminum electrolytic caps from Mouser and the Vishay caps I received look like film caps. But they are listed as aluminum electrolytic. They are the small grey caps with the black band pictured here.
Are they changing the way electrolytic caps are being made? I assume the black band is the - side.
http://www.mouser.com/ds/2/427/138aml-110067.pdf
 
No, they have not changed anything nor are they.
They have always made both Radial & Axial Aluminium electrolytic cap types.
Radial have both leads out the bottom. Axial caps have one lead at each end
 
datafone said:
No, they have not changed anything nor are they.
They have always made both Radial & Axial Aluminium electrolytic cap types.
Radial have both leads out the bottom. Axial caps have one lead at each end
Click to expand...

Yes, I ordered axial types.
The question is the material they are made of. Aluminum electrolytic are usually crimped on the ends with one end having rubber. And they are plastic covered. These seem to be made like a film cap. No rubber on the end, no crimps, no plastic coating.
 
ricohman said:
When I ordered a bunch of caps for a project I didn't notice that two were bp caps. These caps are 10uf 35v.
I have this value in a polarized cap. Can it be used in place of a bipolar cap?
These are electrolytic caps. Can I use a film cap as electrolytic seems hard to find?
This is an Accuphase C200 preamp that I am recapping.
Click to expand...

ricohman said:
Wow. I had no idea that a tiny cap could cost $71!
Click to expand...

$56.00 at PE...Anyways, you can use Metalized PP Caps, they are about $1.25 each (Dayton). They are as big as Film and Foil, so make sure you have space for them. I recently fixed the XO of a pair of PSB Alpha B, and replaced the Electrolytic 4.7 uF 100V caps (BP) with Dayton Metalized PP 4.7uF 200V Caps. There was just about the right space for the Metalized PP.
 
ricohman said:
Yes, I ordered axial types.
The question is the material they are made of. Aluminum electrolytic are usually crimped on the ends with one end having rubber. And they are plastic covered. These seem to be made like a film cap. No rubber on the end, no crimps, no plastic coating.
Click to expand...
Yeah, It's confusing at first, but they are just another variation of aluminium electrolytic cap, just packaged differently.
 
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