I am restoring an old PC that has an SFX PSU in it that is from the 90s
I have removed all the electrolytic caps, there are 2 green caps still on the board.
I am having trouble finding the datasheets for 2 lots of capacitors which would be long discontinued by now.
One is an Rubycon MH 10uF 50v, I can find Rubycon MH5 and MH7 but these caps don't fit into what the datasheet states.
The MH5s are 5mm tall, MH7 are 7mm tall.
The caps I have are 12mm tall and the datasheet also doesn't list the voltage and capacitance.
The other capacitors are 1200uF 16 Panasonic HFA.
While there caps don't say "Panasonic" on them they have an M symbol that have curved legs and this seems to match up with what I have seen on google for panasonic capacitor logo.
When getting replacement caps, I know the capacitance value has to be the same as some of these older PSUs used capacitance to regulate voltage, the temp can be equal or better but most I am finding are 105°C
How much will the ripple current effect things?
I cant find the exact ripple current values some some being less than 25mA out, but the 2 input filter capacitors are 2x higher.
The ESR is also a bit tricky to get exactly right as well.
I have attached the proposed replacement capacitors for each removed capacitor.
Thanks