Tin lead plating solution

Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

427437, 4274431, 427 97, 427 98, 106 105, 205 85, C23C 1854, C23C 1848, C23C 1816

Patent

active

051435446

ABSTRACT:
An acid solution for displacement plating of a reflowable tin lead alloy having a melting point not exceeding 500.degree. F. over a cupreous surface. The displacement plating solution contains stannous ions in an amount of from 0.05 to 0.50 moles per liter, plumbous ions in an amount of from 0.01 to 0.15 moles per liter, a total content of stannous ions and plumbous ions in an amount of from 0.05 to 0.60 moles per liter and a ratio of stannous ions to plumbous ions varying from about 1.0:3.0 to 50.0:1.0. The solution is characterized by an ability to plate the tin lead alloy at a plating rate of at least 100 microinches per 15 minutes. The deposit obtained is capable of reflow and is useful in the manufacture of printed circuit boards.

REFERENCES:
patent: Re30434 (1980-11-01), Davis
patent: 3050410 (1962-08-01), Greene
patent: 3582415 (1971-06-01), Gulla
patent: 4027055 (1977-05-01), Schneble, Jr.
patent: 4093466 (1978-06-01), Davis
patent: 4194913 (1980-03-01), Davis
patent: 4234631 (1980-11-01), Davis
patent: 4715894 (1987-12-01), Holtzman et al.
patent: 4816070 (1989-03-01), Holtzman et al.
patent: 4822202 (1989-11-01), Holtzman et al.
Clark, "Handbook of Printed Circuit Manufacturing", Appendix F, 1985, Van Nostrand Rheinhold Co.
Trans. Inst. Met. Fin., vol. 58, pp. 9-14, 1980.
Surface Tech., vol. 16, pp. 265-275, 1982.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Tin lead plating solution does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tin lead plating solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tin lead plating solution will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-765103

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.