Ian,

No the various Pinouts of the SOT-23 are unfortunately not obsolete. I wish
they were. Sure they are all 3 pin devices, but they keep playing musical
chairs. Always check the data sheets.

Joe
----- Original Message ----- 
From: "Ian Wilson" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Thursday, July 15, 2004 10:32 PM
Subject: Re: [PEDA] SOT-23 pinout


> On 12:03 PM 16/07/2004, Mira said:
> >Dennis,
> >
> >The pin numbering can only be 1 2 3.
>
> Mira,
> In Protel, pin numbers do not have to be numbers, they can be letters.  So
> you can use E,B,C for numbers if you want. If you have very commonly used
> parts making a matching set of Sch and footprints with matching pin
numbers
> (using letters for both if that is better for you) makes good sense. One
> less thing to check.  The only downside to this is that you then have
> multiple footprints to manage if you ever decided to change you SOT-23
layout.
>
>   The pin names
> >might be 1 2 3 or E B C.
> >I haven't seen transistors with different pinout but
>
> There sure are/were transistors, in SOT23, with different pinouts.  I have
> not seen them recently but you used to be able to buy reversed pinout
> versions of common transistors from Philips.  May well be obsolete now.
>
> Ian
>
>
>




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