----- Original Message -----
From: "Thomas C. Sefranek" <tcs@CMCORP.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, June 02, 2002 6:24 AM
Subject: Re: [EE]:Transistor Help!!!!!!!!


> On 2 Jun 2002 at 3:08, Ed Heath wrote:
>
> > I have a TO220 transistor marked "69-526" it has a Motorola
> > stamp.
>
> THis is an in-house number (inventory control).
> The whole intention is to hide the identity of the device being used.
> It reads 1969- lot# 526 design.
> The parameters will not be revealed by Motorola without written
> consent of the origional contractor.

But if the statement that it is from a 1969 design is correct it does limit
the specifications to what could be done back then... probably pretty
limited by todays standards.

Bob Ammerman
RAm Systems

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