Process for reflow soldering

Metal fusion bonding – Process – With protecting of work or filler or applying flux

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Details

228220, 228223, 228248, 148 24, B23K 1005, B23K 3102, B23K 35363, B23K 3538

Patent

active

050764870

ABSTRACT:
A method of joining components to a substrate by reflow soldering with non-rosin-based flux containing solder is disclosed comprising heating the solder in the presence of the components in a low oxidizing atmosphere.

REFERENCES:
patent: 4531986 (1985-07-01), Barajas
patent: 4610391 (1986-09-01), Nowotarski
patent: 4701224 (1987-10-01), Zado
IBM Technical Disclosure Bulletin, "Joining Chip to Substrate in Oxygen-Containing Atmosphere", vol. 20, No. 6, p. 2318, 11-1977.
Multicore brochure-X32 Solder-Section 7/Apr. 1987.
Gessner G. Gawley, The Condensed Chemical Dictionary at 765 (8th Ed. 1966).
R. J. Klein Wassink, Soldering in Electronics at 261 (2nd Edition 1989).
Morris, J. R. & Bandyopadhyay, N., "No-Clean Solder Paste Reflow Processes", Printed Circuit Assembly, pp. 26-31, Feb. 1990.
IPC Standard IPC-SF-818--General Requirements for Electronic Standard Fluxes--Feb. 1988.
Federal Specification QQ-S-571E (May 5, 1972) for Solder; Tin Alloy, Tin-Lead Alloy, and Lead Alloy.

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