Can you ID these?

[Darky8]

Hi Folks!

Can anyone ID these surface mount caps. It's hard to tell if they are any good when they are only marked with the voltage and capacitance! Nothing on the underneath of the component either.

These are in a high quality separate audio DAC built in the 90's. So I'm looking to upgrade them for some nice new audio related ones

There are only two values.. 47uf 10v, and 6.8uf 35v.

The 47's have an ESR of around 0.20ohms, and the 6.8 between 0.80 and 1.20 which seems quite low. So perhaps there not bad, but they are obviously old.

There are 3 x 1000uf PSU caps which are marked SME, so perhaps the same manufacturer?

This unit went back for repair, however there is some rather questionable soldering. So if it's not worth upgrading them, they'll get soldered back in properly.

Any thoughts welcomed.

R

[stj]

Re: Can you ID these?

those are solid tantalum, they will kick the arse of any electrolytic can regardless of the make/series.

one oher thing, those chips are LM317 voltage regulators - those caps arent doing audio filtering.

[Darky8]

Re: Can you ID these?

Thank you stj,

I suspected they were good.

The audio ones are all the same, just 47uf 10v. There are no other caps other than 3 psu cans.

Nice one.