Printed circuit board and method for attaching movable switch th

Details Printed circuit board and method for attaching movable switch th Printed circuit board and method for attaching movable switch th

1992-11-06

1994-05-24

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361736, 361772, 361777, 174261, 439 55, H05K 116

Patent

active

053154843

ABSTRACT:
A printed circuit board is provided with two soldering land portions on respective lead lines. Each of the soldering land portions has two sub-soldering land portions and a narrow connecting portion for connecting the sub-soldering portions, so that the land portions are substantially H-shaped. When the printed circuit board is dip soldered after being coated with a solder-proof layer exposing the soldering land portions, solder sticks to the soldering land portions in such a way that it is thicker on the sub-soldering land portions but thinner on the narrow connecting portions. Thereafter, the synchro contacts of a camera flash unit are positioned on the respective narrow connecting portions and soldered to the lead lines by a soldering iron or hot air.

REFERENCES:
patent: 3015718 (1958-12-01), Petri
patent: 4771303 (1988-09-01), Matsumoto et al.
patent: 4990724 (1991-02-01), Suppelsa et al.

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