On Sunday, May 21, 2023 at 3:09:37 AM UTC-7, Cursitor Doom wrote:
> Hi all,
>
> Anyone seen one of these before? The IC itself has four bjts on a
> single die according to the schematic, but - again according to the
> schematic - there's no connection for whatever this thing mounted on
> top is, which resembles a very thin button cell. The board it comes
> from is dated 1970, so unless you're an old geezer, you won't
> recognize it anyway.
RCA made transistor arrays in DIP packages; the white ceramic dates it
from the early days, but plastic DIPs might still be in production.
>
>
https://disk.yandex.com/i/N1dGB_EIUYbf6A
the schematic section (pin numbers) is consistent with CA3046 and CA3045.
The CA3045 was the ceramic-package variant, but specifications are very similar
(CA3045F was the brown-ceramic frit seal package, you've got the CA3045 with white ceramic).
The IC has five, not just four, transistors.