16v. caps in 15v. circuit

john dozier · 31st December 2010, 11:04 PM

I have some 16v 47uf BG caps I would like to use as ps bypass caps in a 15v circuit. Is this safe to do? They are FK BGs, their highest grade. Thanks

bob91343 · 31st December 2010, 11:10 PM

As long as the voltage never goes above 16V it's safe.

marce · 1st January 2011, 10:56 AM

Standard practice for reliability is to spec a elect at 2X the working voltage. 16V will work, but I'd still go for a higher voltage to be on the safe side.

analog_sa · 1st January 2011, 12:28 PM

If the 15v is regulated there will be no problems.

john dozier · 1st January 2011, 02:56 PM

It is a regulated supply for the output opamps in a DAC. I am concerned about voltage spikes. These are the de-coupling caps and I do not know enough about the circuit to know if spikes are possible. Thanks for any info.

Aucosticraft · 1st January 2011, 03:43 PM

Keeping in mind degradation of capacitor over the time, It wont be recommended. so at least go for 1.5x.

31st December 2010, 11:04 PM	#1
john dozier diyAudio Member Join Date: Dec 2010 Location: columbia sc	16v. caps in 15v. circuit I have some 16v 47uf BG caps I would like to use as ps bypass caps in a 15v circuit. Is this safe to do? They are FK BGs, their highest grade. Thanks

1st January 2011, 03:43 PM	#6
Aucosticraft diyAudio Member Join Date: Nov 2009 Location: Pune	Keeping in mind degradation of capacitor over the time, It wont be recommended. so at least go for 1.5x. __________________ There is always a first time....

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31st December 2010, 11:10 PM	#2
bob91343 diyAudio Member Join Date: Mar 2010	As long as the voltage never goes above 16V it's safe.

1st January 2011, 10:56 AM	#3
marce diyAudio Member Join Date: Jun 2007 Location: Blackburn, Lancs	Standard practice for reliability is to spec a elect at 2X the working voltage. 16V will work, but I'd still go for a higher voltage to be on the safe side.

1st January 2011, 12:28 PM	#4
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	If the 15v is regulated there will be no problems.

1st January 2011, 02:56 PM	#5
john dozier diyAudio Member Join Date: Dec 2010 Location: columbia sc	It is a regulated supply for the output opamps in a DAC. I am concerned about voltage spikes. These are the de-coupling caps and I do not know enough about the circuit to know if spikes are possible. Thanks for any info.

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