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dsavitsk 6th February 2006 04:57 AM

Small, Inexpensive High Quality Film and Foil Caps
 
I am looking for the impossible. I am trying to find, as the subject says, small (narrow anyway) inexpensive high quailty film and foil caps (0.1uF). The Wima FKP2's are just slightly too wide as are the Dayton/Solens.

These are to be used for decoupling on a TDA1541, so I need 14 (hence inexpensive) and small so they can get close to the pins. I am happy to put every other one under the PCB but that still leaves a maximum width of about 4mm. Any suggestions?

analog_sa 6th February 2006 10:26 AM

Have you considered Siemens stacked film? BG NX is another interesting option.

dsavitsk 6th February 2006 10:06 PM

Quote:

Originally posted by analog_sa
Have you considered Siemens stacked film?
Do you have a source for these? I am unable to find them anywhere.

Quote:

Originally posted by analog_sa
BG NX is another interesting option.
Interesting. Do you have experience that these would work well?

HiFiNutNut 7th February 2006 12:36 AM

I think the Vishay / BC component low voltage stack film type may be slightly slimmer (but deeper) than the Wima FKP2 but am not 100% sure. I have them at home but not at work (now).

wrenchone 7th February 2006 12:48 AM

Panasonic makes some small low voltage stacked film capacitors, if you don't mind polyester. They are readily available from Digi-Key.

pmkap 7th February 2006 01:25 AM

Epcos/Seimens stacked polypropolene film caps might be appropriate from Digikey, these are very low inductance metalized (not foil)caps, appropriate for bypassing -
http://www.digikey.com/
and search on 'B3262'
apply a filter to specify value and/or voltage, or simply hit 'viewpage'
click on one of the Digikey part #s, then the catalog/technical info, and you can pull the pdf.

If you need voltages and/or values beyond what is available in stacked polypropolene, Epcos also makes stacked polyethelene caps. Simply search at Digikey for 'B3252'. Note - above certain voltages/values these are mixed stacked/wound or wound caps with higher inductance. You need to download the pdf to see which is which.


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