Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device – With housing or external electrode
Reexamination Certificate
2005-12-27
2005-12-27
Nelms, David (Department: 2818)
Active solid-state devices (e.g., transistors, solid-state diode
Regenerative type switching device
With housing or external electrode
C257S179000, C257S712000, C257S718000
Reexamination Certificate
active
06979843
ABSTRACT:
A power semiconductor device that uses a lead frame for making connection to a semiconductor device and has a structure less subject to fatigue failure at the connection part of the lead frame. A mold resin of a casing (14) is used for integrally covering the lead frame (6, 7, 13), semiconductor device (1), and metal block (15) serving as a substrate mounting the semiconductor device (1). The mold resin surrounding the lead frame (6) and semiconductor device (1) strengthens the joint therebetween, resulting in the power semiconductor device less subject to fatigue failure at the connection part of the lead frame (6).
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Chuma Hideaki
Kashiba Yoshihiro
Nakajima Dai
Mitsubishi Denki & Kabushiki Kaisha
Nelms David
Nguyen Dao H.
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