Patent ID: 6402531
Filing Date: 2002-06-11
Classification: H01R,H05K,Y02P

Abstract:
Capillary action enhanced surface mount pin mounting system comprising afirst substantially flat substrate provided with a predetermined array of plated-through holes having substantially parallel axes and each having an internal surface defining a first substantially uniform cross section; a plurality of pins each defining a longitudinal axis and having one end extending through an associated plated-through hole and another end extending to one side of said first substrate, each said pin having at least the portion thereof received within an associate plated-through hole and having an external surface defining a second substantially uniform cross section, said first and second cross sections being dissimilar and configured to provide spaced lines of contact and elongate channels substantially parallel to said axes, between said internal and external surfaces and adjacent lines of contact, dimensioned to promote capillary action for molten solder at a channel opening on one side of said first substrate to cause the solder to be drawn through said channel towards the opposite side of said first substrate; and a second substantially flat substrate for positioning solder at points substantially aligned with said plated-through holes in said predetermined array substantially in connection at least one channel in at least one plated-through hole prior to melting of solder, said pins extending through said first substrate to a point adjacent to but without penetrating said second substrate, melting of the solder causing the solder on said second substrate to flow into said at least one channel in said at least one plated-through hole in said first substrate and urge said first substrate to be drawn towards said second substrate and to provide a secure surface mount solder joint with said pin and plated-through hole.