Patent ID: 6624479
Filing Date: 2003-09-23
Classification: H01L

Abstract:
A semiconductor device comprising:a first source terminal, a second source terminal, an internal circuit including at least one functional MOS transistor having a specific function, a first source line connecting said first source terminal and said internal circuit, a second source line connecting said second source terminal and said internal circuit, and a protective circuit including a protective MOS transistor having a gate, a source, and a drain directly connected to said gate and said first source line, and a bipolar transistor having an emitter connected to said second source line, a collector connected to said first source line and a base directly connected to said source of said protective MOS transistor, said protective MOS transistor having a threshold voltage having an absolute magnitude which is higher than a voltage between said first source line and said second source line; wherein said source of said protective MOS transistor is connected to said second source line through a resistor element.