Taicon HH replacement?

[PCBONEZ]

Re: Taicon HH replacement?

And so I understand you have them in KZH?
If so then use them. - Good caps.
.

[PCBONEZ]

Re: Taicon HH replacement?

I'm so sorry. I should have started a new thread.

With today's posts, I moved on to another cap value in this same power supply.

The 1000uF/16v part is finished.

Now I'm working on 2200uF/16v (w/10mm diameter, equivalent to NCC KZH or Taicon HH) - both have same specs.

I just noticed something about the four 2200uF/16v. They are all in parallel. Since space is tight, would two 4400uF/16v work?

Be careful.
If you look closely they are probably not all in parallel.
They are probably part of PI filters and have coils in between.
Coils have such low resistance it can get missed by an ohm meter and the caps appear to be in parallel when they actually aren't.
Trace the circuit by eye-ball/hand.
.

[mockingbird]

Re: Taicon HH replacement?

The only 2200uF 16V 10mm capacitor I know of is the Panasonic FK...

Newark P/N: 32R8994

Wow, it was 109 yesterday, someone bought like 50 of them overnight... Be quick, they go like hotcakes.

PCBONEZ also mentioned that you can use a Samxon RS 16V 3300uF 10mm in it's stead.

PCBONEZ: I thought PI filters are always two caps input and one cap output?

[PCBONEZ]

Re: Taicon HH replacement?

PCBONEZ: I thought PI filters are always two caps input and one cap output?

Nope, I've seen them done all three ways.
The first two are the most common by far.
The last one I'd have to call rare.
.
Technically they could flip the middle one [2 caps on output] and it's still a PI filter but I don't think I've ever seen that done.
It wouldn't make sense unless they needed really small caps on the OP end.
.
They are all better than the one coil one cap filters found in el'cheapo PSUs.
.

[japlytic]

Re: Taicon HH replacement?

I did a cross-reference of Taicon and Nichicon electrolytics, and Nichicon HV has better ratings than Taicon HH.

[PCBONEZ]

Re: Taicon HH replacement?

Are they 10mm?
I forget about that series. It's fairly new.
.

[slap_happy]

Re: Taicon HH replacement?

So, Nichicon HV comes in 10mm x 25mm for;

2200uF 10v

1800uF 16v

I wonder if 4x1800uF might be able to replace 4x2200uF. Aside from the uF, the ESR and ripple specs are a good match.

Or, if the 2200uF 10v might be able to handle 12v.

[PCBONEZ]

Re: Taicon HH replacement?

Or, if the 2200uF 10v might be able to handle 12v.

No, never do that.
The voltage rating on the cap should always be at or above the actual circuit voltage.

In some cases you can lower uF but I'd rather not guess because I don't really know what you are working on.
In general it's not a good idea.
- It will change the frequency response of the circuit which may or may not matter depending on what it is.
- The uF is the characteristic that makes caps act like back-up batteries during transients like load changes or power line fluctuations.
.

[slap_happy]

Re: Taicon HH replacement?

No, never do that.
The voltage rating on the cap should always be at or above the actual circuit voltage.

In some cases you can lower uF but I'd rather not guess because I don't really know what you are working on.
In general it's not a good idea.

.

It seems then I have but little choice except to use the original spec cap. The ones from that auction site (the worst place to get caps) came in the mail today. I'm really hoping they are unfake. If they are unfake, can anyone tell from the codes on these when they were manufactured. Thanks!

[mockingbird]

Re: Taicon HH replacement?

Push on the bunge... Does it give way easily and recede into the can or does it stand firm? They look real to me, though the font is slightly suspect...

[PCBONEZ]

Re: Taicon HH replacement?

They appear legit. The real deal.
Who did you get them from?
.

[slap_happy]

Re: Taicon HH replacement?

The bung is firm.

I got them from auction. I'm glad they are probably good because I also got KZH 3300uF 10v in 10mm, which is also hard to find in 10mm.

While I enjoyed rebuilding this power supply, I think I wouldn't mind if I didn't repair another one for quite a while. Sourcing these parts, and all the soldering on this multi-layer board... it was all brutal and a quite a time suck.

[mockingbird]

Re: Taicon HH replacement?

16V 2200uF and 10V 3300uF don't appear in the KZH datasheet at 10mm. Either they're a custom order part, or maybe not genuine...

Though if they really are a genuine custom order size, their ripple numbers look impressive, better than Samxon RS.

Expensive though, almost $2 a cap after shipping. Comparable Panasonic FK 16V 2200uF in 10mm is less than a dollar, though the stock doesn't last long.

[yyonline]

Re: Taicon HH replacement?

I've seen that size KZH in newer Antec EarthWatts PSUs. So, custom size. They certainly look like the real deal.