No, I do know they both have 3 leads.  I have a circuit board that is
asking for a TO-220AA, with 3 leads.  But I can only find a matching
Transistor in the TO-220AB package.  I Just don't know if it will work.

At 06:06 PM 2/1/2003, you wrote:
>In a message dated 02/01/2003 19:05:39 Eastern Standard Time,
>gordon@GNIESSEN.COM writes:
>
>
> > What is the difference between a TO-220AA and TO-220AB package?  I can't
> > find a reference.
> >
>
>I think one has 3 leads and one has 5 leads.
>
>
>Sid Weaver
>W4EKQ
>Port Richey, FL
>
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