Alternatives to Samxon GF/Decon SH at 25V?

[goop]

I'm looking for cheap but good alternatives to Samxon GF and Decon SH for a monitor PSU. The originals are 25V, 10x20mm, 1000uF and 470uF. Maybe 12.5mm will fit. One capacitor was 16V, but I think I'll just go with all 25V.

So far I see Nichicon PW for cheaper at 12.5x20mm, and NCC KYA and KYB for 10x20mm. Can you suggest other candidates?

[coreAngel]

Re: Alternatives to Samxon GF/Decon SH at 25V?

I'm looking for cheap but good alternatives to Samxon GF and Decon SH for a monitor PSU. The originals are 25V, 10x20mm, 1000uF and 470uF. Maybe 12.5mm will fit. One capacitor was 16V, but I think I'll just go with all 25V.

So far I see Nichicon PW for cheaper at 12.5x20mm, and NCC KYA and KYB for 10x20mm. Can you suggest other candidates?

I have a preference for panny's caps so ill suggest this one LOW esr and my favorite FR series...

this is for 1000uf and 25v

http://www.mouser.com/ProductDetail/...HMz177co6pA%3d

and for 470uf and 25v

http://www.mouser.com/ProductDetail/...Do%252bpWxE%3d

[goop]

Re: Alternatives to Samxon GF/Decon SH at 25V?

Thanks. Don't know if it matters, but these are about half the impedance. But mainly, they're more expensive than the KYA, KYB, and PW.

[coreAngel]

Re: Alternatives to Samxon GF/Decon SH at 25V?

Thanks. Don't know if it matters, but these are about half the impedance. But mainly, they're more expensive than the KYA, KYB, and PW.

They are more expensive than the KY series (pun intended) and Nichicon's PW series.... both are pretty good, but i have a soft spot for panasonic and hitachi caps, they are low esr which is what i chose it for you

[goop]

Re: Alternatives to Samxon GF/Decon SH at 25V?

By the way, something strange I noticed. The Samxon GF 50V 33uF is rated at 0.3R impedance (6.3x11mm case). I can't find an alternative that's that low for this capacitance. A Nichicon PW with 0.43R might still do, but am I missing something? No equivalent low ESR from other manufacturers? There's no 33uF for 50V in many series, 33uF 35V goes for 5x11mm so higher impedance, etc.

[stj]

Re: Alternatives to Samxon GF/Decon SH at 25V?

if you can get away with 35v then this maybe!

[budm]

Re: Alternatives to Samxon GF/Decon SH at 25V?

You can use PANASONIC FM/FR series 56uF 50V with the same case size with only 0.140 Ohm Z.

[goop]

Re: Alternatives to Samxon GF/Decon SH at 25V?

stj, while I assume 35V would be fine too (can't say I'm an authority), polymer caps are far lower impedance, and much more expensive.

budm, 56uF is much higher than 33uF. Also 0.14R may be too far off from 0.3?

Nichicon PW looks like the best match so far.

[stj]

Re: Alternatives to Samxon GF/Decon SH at 25V?

panasonic FR series 33uf 35v .3r 280ma 5x11mm
panasonic FR series 22uf 50v .34r 250ma 5x11mm

[stj]

Re: Alternatives to Samxon GF/Decon SH at 25V?

rubycon YXG series 56uf 50v .3r 295ma 6.3x11mm

[goop]

Re: Alternatives to Samxon GF/Decon SH at 25V?

Thanks. The Panasonic FR is close, but I guess the ripple/impedance figures for the 35V version would be different at other voltages, so maybe it would be off with the actual voltage in use? But anyway, no stock.

The Nichicon HE is actually an exact match. Didn't see it at first both because of bad data in the store parameter fields, and because the 50V version not listed in any store. 35V and 63V are stocked, but not 50V for some reason.

Well, PW it is.

[budm]

Re: Alternatives to Samxon GF/Decon SH at 25V?

stj, while I assume 35V would be fine too (can't say I'm an authority), polymer caps are far lower impedance, and much more expensive.

budm, 56uF is much higher than 33uF. Also 0.14R may be too far off from 0.3?

Nichicon PW looks like the best match so far.

This is monitor power supply, not critical. Is this for the startup/running cap?

[coreAngel]

Re: Alternatives to Samxon GF/Decon SH at 25V?

This is monitor power supply, not critical. Is this for the startup/running cap?

I still think low eSR caps are the way to go as even if though its a power supply Ina monitor its still critical
To having it run correctly for a long time Japanese caps are the way to go

[stj]

Re: Alternatives to Samxon GF/Decon SH at 25V?

as long as the esr isnt so low that the psu thinks it's an overload, it wont be a problem.
this is obviously only going to effect output smoothing too.