| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor protection device that has improved withstand amount against overvoltage surge during power supplying. SOLUTION: An internal circuit 2 to be protected, which operates with power supply from a power supply pad 3 on a high potential side and a power supply pad 4 on a low potential side, is connected to a protection circuit 1 between the pad 3 and pad 4 which are integrated. The protection circuit 1 comprises a transistor 5 and a resistance 7, which are connected in series. The resistance 7 can alleviate the overvoltage, which flows when overvoltage surge is given between the power supply pads 3 and 4, and the transistor 5 breaks down, thus enabling the prevention of the protection circuit 1 itself from being broken down. COPYRIGHT: (C)2003,JPO
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