Mounting pin holders using a laser welding process

A method, comprising:

• holding a copper pin holder in contact with a copper trace on a substrate, said copper pin holder having a hollow cylindrical member with a flange member, wherein the flange member contacts the copper trace;
• applying a laser beam to an upper surface of the flange member to form at least one direct copper-to-copper tack weld between the flange member of the pin holder and the copper trace;
• releasing hold on the copper pin holder which is attached to the copper trace by the at least one direct copper-to-copper tack weld;
• and
• applying the laser beam to the upper surface of the flange member at a starting position and moving the applied laser beam along a circumferential trace path about a perimeter of the hollow cylindrical member of the pin holder to form a direct copper-to-copper weld between the flange member of the pin holder and the copper trace.