Soldering paste for light beam-heating soldering

Details Soldering paste for light beam-heating soldering Soldering paste for light beam-heating soldering

1992-02-11

1993-08-10

Rosenberg, Peter D.

Metal treatment

Compositions

Fluxing

148 23, 148 25, B23K 3534

Patent

active

052345084

ABSTRACT:
A soldering paste for light beam-heating soldering containing a flux which contains 2 to 8 % by weight of a thixotropic agent having a melting point of 140.degree. to 150.degree. C., 1.8 to 3.0 % by weight of an activator containing cyclohexylamine hydrobromide, 40 to 50 % by weight of a rosin component and 40 to 50 % by weight of a solvent; and spherical solder particles having a particle size of 250 to 400 mesh and an oxygen content of not larger than 200 ppm, in which a content of the flux in the soldering paste is from 9 to 13 % by weight and the soldering paste has a thixotropy index of 7 to 8.

REFERENCES:
patent: 3684533 (1972-08-01), Conwicke
patent: 4568395 (1986-02-01), Nabhani
patent: 4759490 (1988-07-01), Ochiai

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