McDermott Will & Emery LLP
Lead frame having outer leads coated with a four layer plating
A lead frame base is coated with a four-layer plating. The four-layer plating includes an underlayer plating (Ni), a palladium plating, a silver plating and a gold plating arranged in this order from bottom to top.
Panasonic Corporation Shinko Electric Industries Co., Ltd.
H H H H H H H H H H H H H H
H01L H01L H05K H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L H01L
inventional additional additional additional additional additional additional additional additional additional additional additional additional additional
Seishi Takahiro Yoshito Takashi Kazumitsu Harunobu Kouichi
Oida Nakano Miyahara Yoshie Seki Satou Kadosaki