Selective Solder Process

When a PCB cannot be passed through the wave solder process due to large cutouts on a PCB or if specific components require soldering while not soldering the rest of the board, a selective solder machine is used.  This machine is fully automated to allow precise soldering of programmable points on the PCB using a small fountain of molten solder.  The selective solder machine first applies flux to the specific solder point using a flux spray applicator.  The area is then pre-heated using a curtain of heated nitrogen before the solder fountain is moved onto the solder point.  The selective solder machine can be used for soldering components, wires, or leads attached to large copper areas of the PCB.