发明名称 |
Transistor protection circuit |
摘要 |
The transistor protection device provides a circuit capable of obtaining a sufficient discharge characteristic when an electrostatic discharge voltage is applied to a semiconductor integrated circuit composed of a bipolar transistor. The protection device is provided across an emitter-base (E-B) junction of the bipolar transistor. When an electrostatic discharge voltage for biasing the E-B junction in the reverse direction is applied, the protection device is turned on and the surge current flows through the protection device such that the current which flows into the E-B junction of the transistor is greatly reduced so as to prevent electrostatic breakdown.
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申请公布号 |
US5781389(A) |
申请公布日期 |
1998.07.14 |
申请号 |
US19970868475 |
申请日期 |
1997.06.03 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
FUKUZAKO, SHINNICHI;FUKUDA, YASUHIRO |
分类号 |
H01L29/73;H01L21/331;H01L27/02;H03F1/52;H03K17/0812;(IPC1-7):H02H9/00 |
主分类号 |
H01L29/73 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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