| 1. A semiconductor device for protecting a circuit, formed on a semiconductor chip and having an outside terminal and a ground
terminal, from destruction caused by an electrostatic discharge, comprising:
a Zener diode circuit formed on the semiconductor chip to be disposed between the outside terminal and the ground terminal,
the Zener diode circuit including a plurality of Zener diodes; and
a resistor formed on the semiconductor chip to be connected to the Zener diode circuit in series to increase noise tolerance
of the Zener diode circuit, the resistor being formed by a wire pattern of an aluminum wire to extend along a periphery of
the semiconductor chip so as to provide a resistance of approximately 2 ohms or greater.
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