Randy or Sherry Guttery wrote:
Chuck Harris wrote:

My RCA books have the 1N5GT well documented, as you say, but nothing
on the
1SA6. They must not have thought it worth stealing. What do you
suppose is the 6th element in the 1SA6?

There's no "sixth" element - it is a pentode. I have no idea why it's a
"6"...

Often, the extra element is a shield. So I suppose that could be the
answer.

-Chuck