Help identifying a SMT Aluminium Cap

[capacitor_bob]

Hi Guys,

I have searched google and the forum for help on identifying this cap off a MB from an Axis 2120 Network Camera but no success. Here is what I know:

It is an aluminium surface mount electrolytic cap, with a 'K' vent (it is blown!)

On the top it has a black edge indicating the polarity. However the only other markings are:

29
470
25 A

Can someone help me with those please? I can find a reference that I am confident in because most have a different combination.

Thanks for your help.

[PCBONEZ]

Re: Help identifying a SMT Aluminium Cap

Just guessing:
25 is the only number that is a standard voltage.
470 is no doubt the uF.

That and it's size is all you really need to know to replace it if you choose high grade (Low ESR) replacement.

High grades work okay where low grades were but not the other way around.

.

[trodas]

Re: Help identifying a SMT Aluminium Cap

High grades work okay where low grades were but not the other way around.

Well, not all the time and almost NEVER in PSUs...

As for the SMD cap, then there is a reasonably big shortage of really GOOD SMD caps. In Digi-key, for example, are the best SMD elyte cap I find so far Panny FK ones and their specs are more mediocre that I would like...

There are few Os-con SVP polymers I got from Big Pope, but not 25V ones. Only 16V ones. Sadly it is blown up, so measuring how much voltage are REALLY on the cap is not possible anymore...

So, what "high grade (Low ESR) replacement" precisely you got in mind, PCBONEZ...?

[PCBONEZ]

Re: Help identifying a SMT Aluminium Cap

By grade I mean ESR and ripple.
uF and volts has nothing to do with grades.

.

[kc8adu]

Re: Help identifying a SMT Aluminium Cap

its likely a gp lytic.
without seeing the circut its hard to tell.
wont hurt to use a panasonic fm or similar.
if space is not an issue a radial lead part may work.

[PCBONEZ]

Re: Help identifying a SMT Aluminium Cap

That's what I meant by:
> High grades work okay where low grades were but not the other way around. <
Fail up to a good grade and it should be fine.
Pany FM sounds ideal.

[trodas]

Re: Help identifying a SMT Aluminium Cap

By grade I mean ESR and ripple.

Me too. Best ESR and ripple values (for high frequency at least) are polymers, but they fail to reach the 25V voltages... So as you see, "uF and volts has" everything to do with the grade choice.

The rest of available (at least to me) SMD caps are more like mediocre specs.

You guys talking about Panny FM, but Panny FM is NOT made as SMD one, just check datasheet of Digi: "No records match your search criteria" ...

And the Panny FK is more like mediocre cap:

Panasonic FM 2200uF 16V - impedance 0.015 - ripple 3190 (7 000 h) 12.5x25
Panasonic FJ 1800uF 16V - impedance 0.012 - ripple 2800 (3 000 h) 10x25
Panasonic FK 3300uF 16V - impedance 0,035 - ripple 1800 (5 000 h) 16x16,5 SMD
Panasonic FK 1500uF 16V - impedance 0,060 - ripple 1100 (5 000 h) 12,5x13,5 SMD
Samxon GC 1800uF 16V - impedance 0.009 - ripple 3190 (2 000 h) 10x25
Samxon GA 1800uF 16V - impedance 0.0065 - ripple 4140 (2 000 h) 10x25
Samxon GD 1800uF 16V - impedance 0.012 - ripple 2800 (2 000 h) 10x25
Nichicon HZ 1800uF 16V - impedance 0.0065 - ripple 4140 (2 000 h) 10x25
Nichicon HN 2200uF 16V - impedance 0.009 - ripple 3190 (2 000 h) 12.5x20
Rubycon MCZ 1800uF 16V - impedance 0.009 - ripple 3230 (2 000 h) 10x25
Rubycon MBZ 1800uF 16V - impedance 0.013 - ripple 2800 (2 000 h) 10x23

if space is not an issue a radial lead part may work.

Yep, I recently did that in my Motorola SB5100 modem:
https://www.badcaps.net/forum/showthread.php?p=52940

[PCBONEZ]

Re: Help identifying a SMT Aluminium Cap

uF and volts has as much to do with grades (ESR and Ripple) as what color they are.

uF and volts sets requirements within which you must to find an adequate grade.

FM is good choice when you don't know the grade of the original.
I did forget the problem cap is SMD.

FK is better than HE or KY but less than ZL or KZE.

The cap in question is apparently a Sanyo CE-AX series.


Sanyo CE-AX 470uF 25V - impedance 0.090 - ripple 670

And a Pany FK will do just fine

Panasonic FK 470uF 25V - impedance 0.080 - ripple 850

.