Circuit board processing techniques using solder fusing

Details Circuit board processing techniques using solder fusing Circuit board processing techniques using solder fusing

2007-01-09

2007-01-09

Johnson, Jonathan (Department: 1725)

Metal fusion bonding

Process

Preplacing solid filler

Reexamination Certificate

active

10607400

ABSTRACT:
A circuit board processing system has a circuit board fabrication stage configured to fabricate a circuit board having a set of circuit board pads, and a solder fusing stage coupled to the circuit board fabrication stage. The solder fusing stage is configured to (i) apply flux and solder concurrently to the set of circuit board pads, and (ii) activate the flux and melt the solder to form a set of substantially flat solder coatings which is fused to the set of circuit board pads. The circuit board processing system further includes a washing stage coupled to the solder fusing stage. The washing stage is configured to remove contamination from a surface of the circuit board having the circuit board pads and from the set of substantially flat solder coatings which is fused to the set of circuit board pads. Such a system is well-suited for lead-free solder.

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