I'm working on a footprint for an SMD LED (Optek OVS5MWWBCR4) for which the manufacturer recommends larger SMD pads for thermal reasons, with appropriately applied solder mask only to the actual electrical contact areas, presumably important to assist accurate placement of the LED.
It looks like I can in fact set different solder mask clearances for overlapping pads, but I have not been able to make a pad entirely covered with solder mask. Is this possible? I found that doing changeclearsize to 1 mil gave almost complete solder mask coverage, but some copper was exposed. See page 10 of the OVS5MxBCR4 data sheet PDF for the recommended PCB layout. <http://www.optekinc.com/datasheets/OVS5MWWBCR4.pdf> Does anyone have any recommendations or tips for me on creating a pcb footprint like the one on page 10 of the data sheet? Regards, Colin _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
