Semiconductor device having post-mold nickel/palladium/gold plated leads

abA semiconductor device having a leadframe comprised of a base metal (, e.g., copper), a chip mount pad and a plurality of lead segments. Each of the segments has a first end near the mount pad and a second end remote from the mount pad. The device further has a semiconductor chip attached to the m...

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Main Authors Abbott, Donald C, Zuniga-Ortiz, Edgar R
Format Patent
LanguageEnglish
Published 11.09.2007
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Abstract abA semiconductor device having a leadframe comprised of a base metal (, e.g., copper), a chip mount pad and a plurality of lead segments. Each of the segments has a first end near the mount pad and a second end remote from the mount pad. The device further has a semiconductor chip attached to the mount pad and electrical interconnections between the chip and the first segment ends. Encapsulation material covers the chip, the bonding wires and the first segment ends, yet leaves the second segment ends exposed. At least portions of the second segment ends have the base metal covered by a layer of solderable metal (, e.g., nickel) and by an outermost layer of noble metal (, e.g., stack of palladium and gold).
AbstractList abA semiconductor device having a leadframe comprised of a base metal (, e.g., copper), a chip mount pad and a plurality of lead segments. Each of the segments has a first end near the mount pad and a second end remote from the mount pad. The device further has a semiconductor chip attached to the mount pad and electrical interconnections between the chip and the first segment ends. Encapsulation material covers the chip, the bonding wires and the first segment ends, yet leaves the second segment ends exposed. At least portions of the second segment ends have the base metal covered by a layer of solderable metal (, e.g., nickel) and by an outermost layer of noble metal (, e.g., stack of palladium and gold).
Author Zuniga-Ortiz, Edgar R
Abbott, Donald C
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Abbott (6828660) 20041200
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Abbott et al. (6838757) 20050100
Sugihara et al. (6392293) 20020500
Kinghorn (5635755) 19970600
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Park et al. (6518508) 20030200
Abbott (6376901) 20020400
Abbott et al. (6194777) 20010200
Huang et al. (5889317) 19990300
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Title Semiconductor device having post-mold nickel/palladium/gold plated leads
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