I'm noticing that some circuit boards I'm repairing have SM diodes marked
with the old General Semiconductor logo and the letters "SJ" or "S3".
These diodes have bodies about 4mm long.

I'm pretty sure "S3" is SS23, a 2A 30V DO-214AA (4mm) diode.

But according to Vishay (which bought out General Semiconductor),
marking code "SJ" means S3J, which is a 3A 600V DO-214AB (7mm) diode.
And yet the part on the board is 4mm, not 7mm. The Vishay data sheet
doesn't say anything about alternate packages.

So I wonder why the discrepancy? Did Vishay change General Semiconductor's
marking codes? Or did they just change the package of the S3J diode?
Anyone have any knowledge of this?

--
RH