Average lifespan of a polymer capacitor?
Hi, I was just curious if the brand of solid capacitors mattered as much as it did for electrolytic capacitors and if solid caps last a long time in general if they're used in things like motherboards and graphics cards.
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Re: Average lifespan of a polymer capacitor?
Depends which...
There are different kinds of polymers... If your thinking about Ultra-Low ESR polymers, there are two varieties, both of which should last well over several thousand hours, one more significantly longer than the other."We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."
-Leonid Brezhnev (On the Yom Kippur War) -
Re: Average lifespan of a polymer capacitor?
That's not very comforting. There's 8765 hours in a year so it sounds like if you leave it running, you should expect it to fail in about six months. I'd really expect 50,000 hour minimum for a consumer product. Maybe even 100,000 hours.should last well over several thousand hoursComment
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Re: Average lifespan of a polymer capacitor?
remember that the rating is at max rated ripple and temp.
and they dont just die at the end they just go out of spec.
only way a pc runs at 105c is if its on fire.or the room its in is.
and something else will give up before the polys.Comment
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Re: Average lifespan of a polymer capacitor?
the brand of any cap always matters!I was just curious if the brand of solid capacitors mattered
In solid caps, stick with Rubycon, Panasonic, Nippon Chemi-Con, Fujitsu, and Nichicon__________________
the BIG 4
~~~ the top tier of low-ESR electrolytic capacitors ~~~
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Re: Average lifespan of a polymer capacitor?
The (reliable and proven specs) for a cap matter more than anything. Just going with a brand can leave you paying more and getting less if you don't know what you are buying. Solid Polymers tend to last longer than electrolytic due to design and being the next generation per say.
Any cap misused or abused will fail, but for a general standard (used correctly in the circuit) Polys will last longer than Electrolytic only because they are designed to do so.Last edited by brethin; 09-30-2013, 08:06 PM.Comment
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Re: Average lifespan of a polymer capacitor?
Sorry pardner, but that's as silly as saying what brand of car you buy has no effect on reliability!
but in reality, the brand of car and capacitor you buy has everything to do with reliability and durability!
There are Lexus's, Hondas, Subarus, Acuras, Toyotas and Infinitis at one extreme if you like to never see your mechanic, and Dodge, Ford, Land Rover, Jaguar and Chrysler's for you folks who like to have your car fixed on a regular basis.
In the capacitor world, pretty much the same story, just a different set of Japanese names at the top! - and as far "paying more"? - I don't think that 10 cents for the finest low-ESR 10uF 50V cap made is gonna break me, ya see, I've got that kinda cash!
Last edited by theOracle; 10-01-2013, 12:01 AM.__________________
the BIG 4
~~~ the top tier of low-ESR electrolytic capacitors ~~~
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Re: Average lifespan of a polymer capacitor?
i think this is half on topic lol, how long will a motherboard with Taiwanese polys probably last me?Sorry pardner, but that's as silly as saying what brand of car you buy has no effect on reliability!
but in reality, the brand of car and capacitor you buy has everything to do with reliability and durability!
There are Lexus's, Hondas, Subarus, Acuras, Toyotas and Infinitis at one extreme if you like to never see your mechanic, and Dodge, Ford, Land Rover, Jaguar and Chrysler's for you folks who like to have your car fixed on a regular basis.
In the capacitor world, pretty much the same story, just a different set of Japanese names at the top! - and as far "paying more"? - I don't think that 10 cents for the finest low-ESR 10uF 50V cap made is gonna break me, ya see, I've got that kinda cash!Comment
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__________________
the BIG 4
~~~ the top tier of low-ESR electrolytic capacitors ~~~
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Re: Average lifespan of a polymer capacitor?
Lelon?
( by marketing and sales volume only, not necessarily quality)Comment
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Re: Average lifespan of a polymer capacitor?
I'd say Samxon minus their GF series.
EDIT: That is if we're talking Chinese capacitors, and if not them then Aishi. Taiwan would be Taicon, probably.Last edited by Wester547; 10-02-2013, 09:48 PM.Comment
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Re: Average lifespan of a polymer capacitor?
I thought Samxon was based in china? I guess I would say TaiconComment
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Re: Average lifespan of a polymer capacitor?
I only use Japanese and Korean capacitors.
favorite Korean brand is Samyoung
some other great Japanese electrolytic brands not mentioned in my previous posts are Toshin Kogyo, ELNA, and HitachiLast edited by theOracle; 10-03-2013, 02:18 AM.__________________
the BIG 4
~~~ the top tier of low-ESR electrolytic capacitors ~~~
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Re: Average lifespan of a polymer capacitor?
I wouldn't consider TK great. Seen a lot of them fail, especially on motherboardsComment
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a few days ago I finally purchased mser-100 v2 and I tested its abillity of measuring ESR value.
I found that It shows pretty accurate ESR value for electrolytic capacitor,But When I measure polymer capacitor of dreamcast game console,I found that one third of polymer capacitor's ESR value is more than twice the value of ESR meter table.(for example, I measured one polymer capacitor of 6.3v 100uf, It showed ESR value of 7.68)
Although my dreamcast now turns 20 years old but it still works. I occasionally have played game with it.
Is this ESR value of polymer capacitor correct?... -
Anyone had a solid polymer capacitor fail for whatever reason?
How do they fail? Do they explode, go open, short out, ?
How about for different reasons: forcing excessive ripple current, overheating, voltage too high, reverse voltage?
Just wondering about the causes for a potential shorted solid polymer capacitor... trying to debug a board that has a ~4Ω "short" on a track... it may or may not be a capacitor but was wondering what if it were... -
Hi people, I hope this is the correct spot to post this, I'm new to the forum.
I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.
I hope these photos make it clear which component I am referring to:
(yes, the soldering is a bit botched from removing the blown one, I know)
I have found the board schematic (attached), but there does not seem to be a boardview available. I have never... -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,... -
When I tried to repair LG 29 inch CRT TV, I found that the ESR value of samyoung SMS capacitor(160v 2.2uf), which is very close to D1879 transistor, is 6 ohm.
Judging from above ESR Meter Table,I think It is necessary to replace this sms capacitor.So I visited local electronics shop,and I purchased 160v 2.2uf rubycon YK capacitor.
But when I browse through rubycon YK datasheet,I found that there is no ripple current rating for 160v 2.2uf specification. But On the contrary, I found 39 mA ripple current rating for 160v 2.2uf SMS capacitor.
Rubycon YK DataSheet (b...
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