Is it ok to use a capacitor with a much higher ripple?

Ady2017 · 10-30-2021, 10:46 AM

Hi all

I am trying to source some new caps for the power board on my LG TV. The one I am currently struggling to find a replacement for has the specs:
Sam Young KMG 680uf 50V with a rated ripple current of 973. According to the catalogue these seem to be a general purpose capacitor and it is not clear why LG have used them on the power board.

I like to use Panasonic capacitors but most of these have got a ripple voltage of 2-3 times the figure of the original capacitor. My preferred FR capacitors are 3160 while the FC ones are 2215. Would going from 973 to 3160 be way too over-kill and cause other problems? Are the FC series ok to use for a power supply board?

Thanks

**petehall347** · 10-30-2021, 03:43 PM

higher ripple current is fine in my book .

**PeteS in CA** · 11-01-2021, 11:04 AM

Replacing a GP cap with a low impedance, high ripple current rating cap is usually OK. Unless it was a GP cap in a circuit needing low impedance, etc., the original part would not have been a misuse.

10-30-2021, 10:46 AM	#1
Ady2017 Member Join Date: Dec 2017 City & State: London My Country: UK I'm a: Knowledge Seeker Posts: 39	Is it ok to use a capacitor with a much higher ripple? Hi all I am trying to source some new caps for the power board on my LG TV. The one I am currently struggling to find a replacement for has the specs: Sam Young KMG 680uf 50V with a rated ripple current of 973. According to the catalogue these seem to be a general purpose capacitor and it is not clear why LG have used them on the power board. I like to use Panasonic capacitors but most of these have got a ripple voltage of 2-3 times the figure of the original capacitor. My preferred FR capacitors are 3160 while the FC ones are 2215. Would going from 973 to 3160 be way too over-kill and cause other problems? Are the FC series ok to use for a power supply board? Thanks

10-30-2021, 03:43 PM	#2
petehall347 Badcaps Veteran Join Date: Jan 2015 City & State: worcester My Country: United Kingdom I'm a: Knowledge Seeker Posts: 3,213	Re: Is it ok to use a capacitor with a much higher ripple? higher ripple current is fine in my book .

11-01-2021, 11:04 AM	#3
PeteS in CA Badcaps Veteran Join Date: Aug 2005 City & State: San Jose, CA My Country: USA, Unsure of Planet Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz I'm a: Professional Tech Posts: 3,370	Re: Is it ok to use a capacitor with a much higher ripple? Replacing a GP cap with a low impedance, high ripple current rating cap is usually OK. Unless it was a GP cap in a circuit needing low impedance, etc., the original part would not have been a misuse. __________________ PeteS in CA Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells. ************************** All that is gold does not glitter, Not all those who wander are lost; - J.R.R. Tolkien, The Fellowship of the Ring ************************ To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it. ************************** Laughable prediction, https://principia-scientific.com/doc...l-most-people/ ; Fully Vaxxed May 2021; Viva CallSJ "5K" (actually 3.26 miles), 9/19/21, 51:19; ZombieRunner Halloween 10K, 10/31/21, 1:49:30; ZombieRunner Quarry Lakes half marathon, 4:19:07, 12/12/21

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