Re: gEDA-user: Transistor pinout in gschem and pcb

[Xtian Xultz <xultz@xxxxxxxxxxxx>]

I understand your confusion.
IMHO, the footprints MUST follow the datasheet. If you take a look, every 
TO220 from any vendor has the same pinout. There are a lot of documents 
(Philips is a good start point) wich only shows the footprints and the pinout 
is allways the same.
Some people deffends that gschem must have "generic" pnp and npn transistors. 
In my opinion, these generic transistors only generate more confusion. If I 
cant buy a generic transistor, there must be no generic transistors in 
gschem.
I have symbols for every kind of transistors I used, like BC548, BC558, BC337, 
TIPs, 2N*, etc etc. Some are identical, like BC548 and BC337, but I am more 
secure to work so. Thats what I recomend to evferybody.
In PCB, I have only one TO220 (in fact I have three, one normal, one layered, 
and one with oblongue pads) and only one TO92 footprint.

Em Qui 02 Fev 2006 13:47, Klaus Rudolph escreveu:
> Hi all,
>
> I simply want to use pnp-3.sym and npn-3.sym in gschem and
> use TO92 and TO220STAND footprints for pcb.
>
> I found out that pins are wrong named to convert them to pcb.
> OK, I created a new symbol with different names and use a gafrc
> file and could use the new sym files. No problem in gschem
>
> But TO220STAND (maybe all other TO220 also) and TO92 using
> different pin numbers for BCE. My transistors are BC547/BC557
> and TIP132/TIP137.
>
> What is best to do now. Define also new symbols in pcb,
> which is to define new? Because pinnumbering for other
> devices are going away like 7805 or any triacs???
>
> I am totally confused, sorry!
>
> What I need is a to do list for:
> - which elements could be used out of the box (sym->m4/elemets)
> - which side must be redefined for using (sym or pcb side)
>
> My installation is from last iso download a few days ago.
>
>
> Thanks!
>    Klaus