Gold alloy wire for ball bonding
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United States of America Patent
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Apr 3, 2012
Issued Date -
N/A
app pub date -
Jun 23, 2008
filing date -
Oct 24, 2007
priority date (Note) -
Expired
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Abstract
There is provided a gold alloy wire for a ball bonding. The gold alloy consists of 10 to 50 ppm by mass of magnesium (Mg); 5 to 20 ppm by mass of europium (Eu); 2 to 9 ppm by mass of calcium (Ca); and a remaining portion being gold (Au) having a purity of a minimum of 99.998% by mass. In the gold alloy wire for a ball bonding, an addition amount of calcium (Ca) is a maximum of half that of europium (Eu).
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