On Sat, 2010-07-17 at 20:29 +0200, kai-martin knaak wrote: > Stefan Salewski wrote: > > If I order resistors, size 0805, they better fit a 0805 footprint ;-) > Seriously, can you give an example for parts with arbitrary footprint? > > ---<)kaimartin(>---
Of course. Many ICs of my DSO board are available in different shapes. I.E most OpAmps are available in SO8 or SOT23-5 shape. In datasheet they often use fancy names for footprints, so you have to be very carefully when ordering. Very dangerous is the SO16 which is used by MAX232. There are small, medium and width variants of SO16. For my first gEDA board with AT90USB1287 I used a wrong SO16 variant. And for my current DSO board: I was very carefully when selecting footprints, but I am sure there will be some surprises when I put the devices on the printed paper. (OK, not really the 0805 parts). So it is clear that I have to order the devices and check shape before I can order the PCB board. _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
