I've found those on various 286 systems. I made a key fob out of mine!
>
> The 286 chip in the T3100 series was smaller than the regular 286 chip
> (IIRC). The "fun" part about it was that it just dropped into the socked
> (loosely), and was held in place by the heatsink that snapped on top [one
> of Toshiba's *many* bad designs). If the computer would get bumped