发明名称 |
Electrostatic discharge protection device and method therefore |
摘要 |
Methods and apparatus are provided an electrostatic discharge (ESD) protection device having a first terminal and a second terminal. The ESD protection device comprises a vertical transistor having a collector coupled to the first terminal, a base, and an emitter coupled to the second terminal. A zener diode has a first terminal coupled to the first terminal of the ESD protection device and a second terminal coupled to the base of the vertical transistor. Subsurface current paths are provided to redistribute current from a surface of the vertical transistor in an ESD event. The method comprises generating an ionization current when a zener diode breaks down during an ESD event. The ionization current density from a surface zener diode region is reduced. The ionization current enables a transistor to dissipate the ESD event.
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申请公布号 |
US2005207077(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20040805119 |
申请日期 |
2004.03.19 |
申请人 |
XU HONGZHONG;BAUMERT BETH A;IDA RICHARD T |
发明人 |
XU HONGZHONG;BAUMERT BETH A.;IDA RICHARD T. |
分类号 |
H02H9/00;(IPC1-7):H02H9/00 |
主分类号 |
H02H9/00 |
代理机构 |
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地址 |
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