Mix Voltage capacitor value

[JorgeHernan]

I have to recap a sis730 462 motherboard it has 10 2200uf x 6.3 volt from origin. The problem is that i have 5 new 2200 x 6.3volt caps and 5 new 2200 x 10volt.Can i recap using these despite their difference in voltage value.It is safe?Thanks in advance

[PCBONEZ]

Re: Mix Voltage capacitor value

Voltages on a motherboard are 12v 5v and 3.3v.
-
6.3v and 10v caps are interchangeable so far as the voltage.

BUT. Volts and uF is only part of the story.
It is WAY WAY important to check the ripple and ESR ratings of replacement caps to those of the original caps.

What are the make/series of the old caps (and new).

.

.

[PCBONEZ]

Re: Mix Voltage capacitor value

The 6.3v -10v interchangeability only applies to motherboards.
-
An add-in card or a PSU may have (say) 9v in there for some odd reason.
In that case check the voltage the cap is on with a meter. (Both load and no-load.)

[JorgeHernan]

Re: Mix Voltage capacitor value

Voltages on a motherboard are 12v 5v and 3.3v.
-
6.3v and 10v caps are interchangeable so far as the voltage.

BUT. Volts and uF is only part of the story.
It is WAY WAY important to check the ripple and ESR ratings of replacement caps to those of the original caps.

What are the make/series of the old caps (and new).

.
.

Old/original caps are LUXON.The new ones are JACKON (i think they are not the best)but they are the only option i have.

[PCBONEZ]

Re: Mix Voltage capacitor value

Well,
If you have no choice but to use those then I guess specs aren't worth checking.

[davmax]

Re: Mix Voltage capacitor value

The problem is that if 6.3V and 10V caps are connected in parallel in the same circuit there will be unequal ripple current sharing. Typically 10V caps have lower ESR. So if the caps happen to be connected in two groups keep the 10V ones together, likewise the 6.3V. ie match parrallel caps.