John Luciani wrote: > I created a couple of footprints to be used to quickly add a > breadboard area to a design. > > The SMD only pattern consists of a SOT23-6 (0.95P) pattern on top of a > SOIC pattern (1.27P). The TH/SMD pattern adds a 300mil DIP pattern to > the SMD pattern. There are two grids of 60mil square donuts on 100mil > centers on either side of the ICs. > > The traces are done with overlapping pads. With a 50mil grid it is > easy to add a couple of these patterns to a PCB. > > Has anybody done anything similar? How well did it work? > > My patterns are at > > http://www.luciani.org/not-quite-ready/not-quite-ready-index.html
those are pretty neat. What I've done in the past is to put an array of 40x40 mil square pads on a 50 mil grid. Then put some with holes down to the ground plane around a bit. You can solder soic, sot-23, 1206, 0603, DIP on those fairly easily. A hot soldering iron can lift off pads you don't want (and some you do want if you're sloppy). As a general rule I only need this pattern on boards where I didn't put it in. -Dan _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
