At 12:20 AM 05/10/2005, Jin-Wei Tioh wrote:
I probably shouldn't have made a blanket statement. For those caps,
replacing them with caps of non-equivalent value can be done,
so long as both the voltage and charge ratings are >= the original. In RF
paths though, you usually want to keep the same exact
capacitance value.
More reading on this:
This page: http://active-hardware.com/english/hardinfo/upmobo.htm says to
go with 16V or 25V capacitors because you need the headroom for 5V and 12V
lines, respectively.
This page: http://www.overclockers.com/tips469/ doesn't agree on
anything. The general consensus appears to be higher voltage is fine, as
is higher capacitance, but don't overdo it.
Here are my questions: If I put a 25V on everything, will I cause problems
on the 5V traces?
Is there any real advantage to upgrading any of these?
I found this comment:
"
Capacitors on motherboard, Rubycon ZA-series 1000uF 6.3V. This capacitor
has max ripple current at max operation temperature (105C,100kHz) of 1650mA
and impedance of 24mOhm (at 20C, 100kHz)
Some general purpose, cheap-ass-capacitor, Phillips 037-series 2200uF 16V.
This capacitor has max ripple current, at max operation temperature
(85C,100Hz) of 1150mA and impedance of 150mOhm (at 20C, 10kHz)"
This seems to suggest that I'd be better off using the same voltage and
capacitance, but getting better max ripple and impedence. If this is the
case, is there a way I can find out these rating from looking at a capacitor?
T
