Rubycon YXF.. how are these?

[Andypairo]

Hello,
I wanted to know your opinion about the YXF series from Rubycon.
These are electrolytic, 105°C. Low ESR types... can they be good for PS decoupling (I can get 100uF /50V at low price)?

Cheers

Andrea

[Nisbeth]

Datasheet: http://www.farnell.com/datasheets/6842.pdf


/U.

[peranders]

We used to use YXF in our industrial stuff. We were very pleased with them, high performance and long lifetime. We used them in a place where it was 60 deg C. Unfortunately we have to change them when delivery times went to the stars (also the price). Right now we use Lelon from Taiwan and they are surpisingly good!

[Andypairo]

So they are worth buying? Are they comparable to Panasonic FC?


Cheers

Andrea

[lucpes]

Recently I used some Rubycon YXF caps (470uf/16V) for local decoupling of the output stage of a DAC and compared to Panasonic FC 220uf/25V the sound was rather harsh and muddy. Rubycon YXG was the same story. Same experience but only much worse with Rubycon ZA. Rubycon ZL seems to have the same character but to a lesser degree.

IMO I cannot say that Rubycons are really bad for audio stuff, might have been some ringing going in there with the bypassing caps (tried both EPCOS/SIEMENS ceramic 0.1uf/X7R or WIMA MKS 02/0.01uf). Had the very same problems with the Rubycons when used for the input stage PS decoupling in an amplifier. The sound was nice, but it did not have that open&firm character that Panasonic FC gave me. I find Panasonic FC a much better choice for PS decoupling. Maybe the Rubycons have too low ESR for my particular applications? Don't know, that's my personal experience with those.