Method and apparatus for brazing surface components onto a print

Details Method and apparatus for brazing surface components onto a print Method and apparatus for brazing surface components onto a print

1988-11-23

1989-12-05

Godici, Nicholas P.

Metal fusion bonding

Process

Plural joints

228201, 228248, 228 20, B23K 100, B23K 3102, H05K 334

Patent

active

048847380

ABSTRACT:
The brazing process for surface components on a circuit board involves brazing at the end of which microballs of different sizes are formed and dispersed in a random fashion on the board. The process is characterized in that the board is treated to decontaminate the surfaces of the board and the microballs to eliminate microballs formed during brazing, thereby leaving only the forces of surface tension. A superfusing liquid is placed in contact with the board under the following conditions:

REFERENCES:
patent: 3500536 (1970-03-01), Goldschmied
patent: 4363434 (1982-12-01), Flury
patent: 4396140 (1983-08-01), Jaffe et al.
patent: 4515304 (1985-05-01), Berger

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