I am considering Black Gate PK series caps for certain limited applications. However, even Rubycon and Jelmax don't seem to have any real data sheets. I need to know ESR (at 400 and 100kHz), loss tangent, etc. I refuse to design in a cap, just because it has the right value, and everyone says, "Use them. They're good." For simple audio coupling, OK, reputation is enough. However, I may need to use them in the signal path where signals centering on 38kHz are passing (to replace Pioneer CSSA series, or Sanyo M series caps were used).
I know Black Gate is scheduled to go out of production, but I believe Jelmax will find someone else (other than Rubycon who just opted out) to make their Black Gates, cash cow that they appear to be.
Further help would be if someone had data sheets for the old ('73 vintage) Sanyo M series caps, so I know what I'm replacing.
Can anybody help?
Rich P
I know Black Gate is scheduled to go out of production, but I believe Jelmax will find someone else (other than Rubycon who just opted out) to make their Black Gates, cash cow that they appear to be.
Further help would be if someone had data sheets for the old ('73 vintage) Sanyo M series caps, so I know what I'm replacing.
Can anybody help?
Rich P