Capacitors for the SMPS enviornment?

[alexanna]

Are all the series capacitors listed in the,
“What capacitors should I use”, thread acceptable for the SMPS, or a switching environment?
Or are there any you should not use?
Al.

[Agent24]

Re: Capacitors for the SMPS enviornment?

Depends what part of the SMPS you are referring to.

[TheLaw]

Re: Capacitors for the SMPS enviornment?

Smoothing part of the SMPS should be low ESR, high capacitance.

Primary side/PFC circuit's big cap should be high voltage, have the proper ripple current, and have as much capacitance as possible.

[Agent24]

Re: Capacitors for the SMPS enviornment?

I would also add it depends on the original capacitors too.

If you are replacing capacitors in a PSU then usually it's sensible to get ones which match the originals, but with a better quality brand.

As a general rule, the replacements should have the same ESR or lower and Same Riple current rating or higher. If you change ESR too much you may cause problems in the circuit.

For that you need to look at the datasheets of the original capacitors and the new ones.

[alexanna]

Re: Capacitors for the SMPS enviornment?

Are all the series capacitors listed in the,
“What capacitors should I use”, thread acceptable for the SMPS, or a switching environment?
Or are there any you should not use?
Al.

I don't think I asked the question correctly .This is the thread I was talking about https://www.badcaps.net/forum/showthread.php?t=2280
Nichcion PW is of lower quality than HZ. Say for example could the PW series be used for a start up cap without causing problems down the road?
Or some of the other brands series that are on the left side of the list, Left being poorer quality and the better quality being towards the right?
Al.