Teapo capacitor quality

[eawtan]

Re: Teapo capacitor quality

Bulge teapo :



From my old silverstone op650 psu.

[CapSwapper]

Re: Teapo capacitor quality

What brand of caps were these?

It was in chinese

[Agent24]

Re: Teapo capacitor quality

So because they fail in a home environment, they are bad?

Yes, a home environment is not very stressful. If they can't handle that, they're pretty bad.

[richdelft]

Re: Teapo capacitor quality

I'm guessing that certain person is me. I'll stop hating them when I stop seeing them failed in 2-3yr old PSUs which have only been used in a home environment. I'd rate them slightly above Fuhjyyu, but below CapXon.

So because they fail in a home environment, they are bad?. Don't you just have a oem psu, like most of the psu's are?.....It's an average ok cap and not cheap or something. And what is your knowledge about electronics in general? Build and refurbished a lot?
gr. richard

[mockingbird]

Re: Teapo capacitor quality

I always pull and toss them all. even if it's a 1uF. I don't trust any junk caps from china anymore. I once ordered some IC adapters from china and they sent me a bag of 10uF caps by mistake. the readings on every cap was zero capacitance and zero resistance. so basically they sent me a bag of jumpers disguised as caps

What brand of caps were these?

[Agent24]

Re: Teapo capacitor quality

At least the capacitors that came with the PSU were OK to begin with, rather than fakes, pieces of wire.

But I agree, I replace the lot too.

[CapSwapper]

Re: Teapo capacitor quality

I always pull and toss them all. even if it's a 1uF. I don't trust any junk caps from china anymore. I once ordered some IC adapters from china and they sent me a bag of 10uF caps by mistake. the readings on every cap was zero capacitance and zero resistance. so basically they sent me a bag of jumpers disguised as caps

[madscientist159]

Re: Teapo capacitor quality

Just wanted to chime in here and mention that I have run into a lot of dead 47uF/35V Teapo 6mm caps in a hot area of a specific model of ATX server power supply. I have also sporadically have run into dead 1000uF/16V Teapos in another hot area of revision 1 of that same supply model. In revision 2 the designers replaced them with polymer caps and Sanyo electrolytics but still missed the 6mm caps; spent a while debugging the extreme voltage sag under load on all rails before I figured out it was the active PFC control caps that were dead Never overlook those tiny caps as a possible culprit!

The larger Teapo caps were all OK; apparently the little 6mm and 10mm Teapos really hate heat.

[goodpsusearch]

Re: Teapo capacitor quality

In my opinion 3300uF is quite enough for 99% of psus. You should make sure that the esr is low enough and not too low for smps though.

[Pentium4]

Re: Teapo capacitor quality

Yeah that would be cool, and worth mentioning. You'd probably need at least 2,000 though to meet minimum quantity? Unfortunately there isn't as much of a need for 4700μF caps

[mockingbird]

Re: Teapo capacitor quality

We should add that to our custom order thread. I should also mention it to the sales rep I sent an inquiry to for possibly getting the custom manufacture done by Nichicon, if they ever get back to me. They would be a universal replacement in the sense that they'd be good for 2200uf/3300uf caps as well.

[Pentium4]

Re: Teapo capacitor quality

Yeah you're right, I've never seen quality 4700μF in 10mm either. 4700μF 6.3V is probably possible, that's all you need for the minor rails, not sure what else you'd need a low ESR 4700μF D10mm cap for

[mockingbird]

Re: Teapo capacitor quality

6.3v or 10v, either is good for PSU 3.3V or 5V rail... 10mm because there are no Japan-branded 10mm versions, and you can't always fit 12.5mm in place of 10mm caps. I wonder what the difference in rippleis at full load between the two values.

[Pentium4]

Re: Teapo capacitor quality

Appreciate the info. Did you ever find a defective 10mm SC that wasn't bulged?

I don't think I've found one defective if you mean failed, I've seen some possibly getting close though such as 0.11-0.15Ω ESR on 2200μF. Most of them bulge when horribly failed

Good 10mm 4700uF caps would be nice though, no?

4700μF 10V in what size? Because I have a few 4700μF 10V Chemi-Con KY 12.5mm x 35mm for when I rarely come across them

[mockingbird]

Re: Teapo capacitor quality

Appreciate the info. Did you ever find a defective 10mm SC that wasn't bulged?

Good 10mm 4700uF caps would be nice though, no?

[Pentium4]

Re: Teapo capacitor quality

I don't think 3300μF is a bad choice because with such low loads nowadays on the 5V and 3.3V, I can't see how 3300μF wouldn't be enough

Edit: I've also seen a failed Teapo SC 4700μF 10V before, fairly recently. It was on the 5V rail very close to two coils. It was bulging and read 990μF and 1.26Ω ESR

[mockingbird]

Re: Teapo capacitor quality

Wow, so they really ARE 4700uF... And there I replaced a 4700uF with 3300uF...

Anyone interested in a custom order of 10mm 4700uF caps ...

[Pentium4]

Re: Teapo capacitor quality

Can someone with an ESR meter test 6.3V 4700uF 10mm Teapo SC? I am curious if they are really 4700uF, because in the case of Fuhjyyu caps labeled the same, they were only 3300uF (3100uF IIRC) in that case.

I've measured these before and had it documented. Teapo SC 4700μF 6.3V, manufactured June, 2006. Measured 4576μF
And Teapo SC 4700μF 10V, manufactured February, 2007. Measured 4602μF

[mockingbird]

Re: Teapo capacitor quality

Can someone with an ESR meter test 6.3V 4700uF 10mm Teapo SC? I am curious if they are really 4700uF, because in the case of Fuhjyyu caps labeled the same, they were only 3300uF (3100uF IIRC) in that case.

[pc7fan]

Re: Teapo capacitor quality

^
Teapo is usually OK but like I said but I prefer Nichicon, Chemicon, Panasonic and Rubycon. If there's Teapo in equipment, I leave them in there, as long as the device works fine
I still check sometimes the caps. If they bulge, I will definately replace them.