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Old 10th September 2011, 03:51 PM   #1
Stabby is offline Stabby  Belgium
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Default Best cheap capacitor brands?

I'm composing kits to build a small analog filter with the goal to offer them at the best price possible without making profit. Since I order 100+ units of each part (at Farnell) I get some nice discounts.

I have already made my decision on the 10uf cap which will be a Panasonic (which I can get for 8 cents a piece). I am unsure about the ceramic caps though. There are two 100nf and two 680pf caps for each filter. I prefer the cost to be as low as possible, yet still offer good quality.

For the 100nf caps, I can choose between Multicomp, Vishay, AVX and Kemet. Is one of these brands good enough for my purpose? The cost shouldn't be more than €0,1 or $0,14 a piece for 100pcs.

For the 680pf caps, I'm thinking of these Vishay caps at €0,05 a piece.
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Old 10th September 2011, 07:55 PM   #2
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from Cyril Bateman's articles:

(under the heading "The worst capacitor?":
"Such devices [ceramic disc] have no place in any audio system."
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Old 10th September 2011, 09:37 PM   #3
Stabby is offline Stabby  Belgium
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Will these Panasonic film caps do for the 100nf caps?

http://be.farnell.com/panasonic/ecqv...1uf/dp/1744837

Last edited by Stabby; 10th September 2011 at 09:39 PM.
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Old 11th September 2011, 02:41 AM   #4
pooge is offline pooge  United States
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Quote:
Originally Posted by Andersonix View Post
from Cyril Bateman's articles:

(under the heading "The worst capacitor?":
"Such devices [ceramic disc] have no place in any audio system."
Very misleading quote, as he indicated that NP0 ceramics were quite good, near the best. And they are cheap.
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Old 11th September 2011, 07:10 AM   #5
Elvee is online now Elvee  Belgium
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Quote:
Originally Posted by Stabby View Post
Will these Panasonic film caps do for the 100nf caps?

PANASONIC|ECQV1J104JM|CAPACITOR, FILM, 63V, 0.1UF | Farnell BelgiŽ
Depends on their function in your filter, and the quality level you want to achieve.

Can you post your schematic?

Quote:
Very misleading quote, as he indicated that NP0 ceramics were quite good, near the best. And they are cheap.
Not for 100nF
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Old 11th September 2011, 12:57 PM   #6
Stabby is offline Stabby  Belgium
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This is the schematic:

Click the image to open in full size.

It's an analog LP/HP filter. The design is the same as the filter of the Korg MS20. So far I have these caps in mind:

Panasonic 10uf elcap
Vishay 680p ceramic cap
Panasonic 100nf film cap
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Old 11th September 2011, 01:52 PM   #7
Stabby is offline Stabby  Belgium
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I'm also thinking that maybe using cheap ceramic caps is the best thing to do, regardless of price. After all these were used in the Korg MS20 as well and may be the best choice for a more authentic sound? The MS20 filter was harsh sounding and that's exactly the appeal of this filter. It would no longer be interesting if it sounds smooth.

Still not sure about the caps...

Last edited by Stabby; 11th September 2011 at 01:55 PM.
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Old 11th September 2011, 05:08 PM   #8
Elvee is online now Elvee  Belgium
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Quote:
Originally Posted by Stabby View Post
This is the schematic:

Click the image to open in full size.

It's an analog LP/HP filter. The design is the same as the filter of the Korg MS20. So far I have these caps in mind:

Panasonic 10uf elcap
Vishay 680p ceramic cap
Panasonic 100nf film cap
For this application, your caps should be perfectly OK
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