Hi Jeremy, We'll be running the board at Sunstone, so on a four layer board, that's a design rule of 6 mil trace/6 mil space and a minimum drill size of 8 mils.
Of course, you should avoid the 6 mil rule as much as possible, and make things bigger and farther apart, but it's just fine to use the smallest drill size for vias. As for test points, a 30 gauge mod wire is about 10 mils thick. So I'd go for a > 8 mil drill, say, 16 mils? But now that I say this, I'm dang sure my 30 AWG mod wire actually fits in the supposedly 8 mil vias from Sunstone... so huh. Unless someone chimes in earlier (Tim?), I'll do some measurements on Monday morning and let you know for sure. Until then, 16 mils is fine. Andrew On 09/18/2010 03:14 PM, Jeremy Booth wrote: > It came up that we should have vias instead of the tiny pads as > connection points for board backends off the GFE. There was some talk > about drill size and wire gauge, but I don't know that we came to a > specific drill size, and I don't recall the gauge of the wire that was > discussed... anyone have any suggestions? > > > > _______________________________________________ > psas-avionics mailing list > psas-avionics@lists.psas.pdx.edu > http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics -- ------------------------------------------------------- Andrew Greenberg Portland State Aerospace Society (http://psas.pdx.edu/) and...@psas.pdx.edu P: 503.788.1343 C: 503.708.7711 ------------------------------------------------------- _______________________________________________ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
