gEDA-user: sot-23 pin numbers

joe tarantino joeft at earthlink.net
Wed Feb 6 12:05:46 EST 2008


My recollection is that pins (1) an (2) are on the same side of the
package.  Number CCW when viewed from top.  As DJ said, this seems to be
consistent for BJT and FET parts.  Diodes are another matter - when the part
contains a pair all arrangements are possible :).

Joe T

On Feb 6, 2008 8:21 AM, DJ Delorie <dj at delorie.com> wrote:

>
> Based on my limited experience, I've found that the control (base,
> gate), power (emitter, source) and output (collector, drain) are
> always on the same pins on sot-shaped devices, regardless of fet/bjt
> or p/n.  The spec sheets always seem to number those pins the same
> too, but that doesn't mean that gschem/pcb does.
>
>
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