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:
Feb. 27, 2001
Filed:
Jul. 30, 1998
Applicant:
Inventors:
Donald C. Abbott, Norton, MA (US);
Paul R. Moehle, Seekonk, MA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/3495 ; H01L 2/348 ; H01L 2/352 ; H01L 2/940 ;
U.S. Cl.
CPC ...
H01L 2/3495 ; H01L 2/348 ; H01L 2/352 ; H01L 2/940 ;
Abstract
A leadframe having the desirable features of palladium plated leadframes, such as compatibility with both wire bonding and solder reflow, as well as good adhesion to molding compounds is provided by plating the interior lead frame portions with one microinch of palladium and the external leads which contact solder with three microinches of palladium. A low cost method for fabricating the leadframe based on a unique combination of proven processes is provided.