Hello Tom,
Motorola did a lot of Schottky and ultrafast recovery diodes in TO-220
packages. Those were diodes for currents higher than 5 A and to best of my
knowledge, none of them were JEDEC registered, so most likely single source.
I have seen some other manufacturers putting out diodes in TO-220, but very
few of them, not an industry wide practice. Some of those diodes were pairs,
and others had tab connected to one of end leads. What you have is either a
pair with one leg shorted or it is a bona fide single diode.
As Schottky diodes, TO-220 was used up to 30 A and for higher current they
used TO-218 (a bigger package). In ultrafast recovery the line was drawn at
16 A.
Hope, this helps somewhat.
Regards
Miroslav Pokorni
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----- Original Message -----
From: "Thomas P. Gootee" <tomg@...>
To: <hp_agilent_equipment@...>
Sent: Tuesday, September 16, 2003 11:41 AM
Subject: [hp_agilent_equipment] Need 3325A component ID
Hi, all.
I need help identifying a part on the power supply board of an HP
3325A.
It is CR10. But it resembles a TO-220 transistor.
There are three separate part numbers on it: 1) 84-0266 (top of front
of device), 2) 8515, preceded by what looks like the Motorola "M",
inside a circle (bottom of front of device), and 3) 136725, printed
on the top of the device.
Terminals 2 and 3 (left to right, from front) appear to be shorted.
And if anyone has schematics, or a service manual, that's already
scanned or photocopied, I would be very interested.
Thanks!
Tom Gootee
tomg(at)fullnet.com
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