16 Apr
2004
16 Apr
'04
3:36 p.m.
Joe,
At 11:21 PM 4/16/04, you wrote:
They're about 1
1/4" square and about 7/16" thick and are marked "TIB 0203S, 23May80 -1,
MSK=627573, 8B, 958-S-40, 24-164-11".
23 May 80 is the date of final test.
62, 75, and 73 are the hexadecimal addresses of defective minor loops.
Does anyone know if these are bubble memories?
Yep, they are. Just last weekend I picked up a TI publication regarding
the TIB0203. I transcribed some of it to
www.decodesystems.com/tib0203.html
From that same manual: "The TIB0203 is mounted on a 14-pin dual-in-line
lead frame and encapsulated in an electrically nonconductive plastic compound.
Included in the package are the two coils that provide the rotating magnetic
field and a permanent magnet. The package is surrounded by a magnet shield
to protect it from external magnetic fields. The package is intended for
insertion
in mounting hole rows on 1.200-inch (30.48-mm) centers. Tin-plated leads
require no additional cleaning or processing when used in soldered assembly.
The package weighs approximately 25 grams."
Cheers,
Dan
www.decodesystems.com/wanted.html