Gold alloy wire for bonding wire having high bonding reliability, high roundness of compression ball, high straightness and high resin flowability resistance

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United States of America Patent

PATENT NO 7678999
APP PUB NO 20090120665A1
SERIAL NO

11917241

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Abstract

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A gold alloy wire for a bonding wire contains one kind or two kinds of Pt and Pd of 5000 ppm to 2% by mass in total, Ir: 1 to 200 ppm, Ca: 20 to 200 ppm, Eu: 10 to 200 ppm, Be: 0.1 to 30 ppm, if necessary, and La: 10 to 200 ppm, if necessary. At least two kinds of Ca, Eu, Be, and La are in a range of 50 to 250 ppm in total.

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Patent Owner(s)

Patent OwnerAddress
TANAKA DENSHI KOGYO K K2303-15 YOSHIDA YOSHINOGARI-CHO KANZAKI-GUN SAGA 842-0031

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maki, Kazunari Naka-gun, JP 74 205
Nakata, Yuji Sanda, JP 18 232

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