The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2001
Filed:
Aug. 06, 1998
Applicant:
Inventors:
Assignee:
Nortel Networks Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/16 ;
U.S. Cl.
CPC ...
H05K 1/16 ;
Abstract
A method of assembling a substrate and an electrical or electronic component, the component having electrically conductive leads with surfaces of an alloy from the list consisting of tin, nickel, tin copper, tin silver, nickel palladium, gold palladium, and silver palladium, and the leads being soldered to copper-based terminals of the substrate by a solder alloy, the solder alloy comprising, by weight, 99.3% tin and 0.7% copper. The soldering takes place in a chamber having a nitrogen inert atmosphere. Lead solder is thus avoided.