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:
Apr. 23, 2013
Filed:
Aug. 27, 2010
Roman Hamerski, Overland Park, KS (US);
Roman Hamerski, Overland Park, KS (US);
Diodes FabTech, Inc., Lee's Summit, MO (US);
Abstract
A titanium-nickel-palladium solderable metal system for silicon power semiconductor devices (), which may be used for one or both of the anode () or cathode (). The metal system includes an outer layer of palladium (), an intermediate layer of nickel (), and an inner layer of titanium (). For certain applications, the nickel may be alloyed with vanadium. The metal system may be deposited on bare silicon () or on one or more additional layers of metal () which may include aluminum, aluminum having approximately 1% silicon, or metal silicide. The use of palladium, rather than gold or silver, reduces cost, corrosion, and scratching.