Electrostatic discharge voltage resistive current modeling method of electrostatic discharge protection device

Provided is a method for modeling an ESD breakdown current. According to one variation, a first proportional constant is based on a circumference of the ESD protection device and a second proportional constant based on an area of the ESD protection device. A dual first order equation is derived by sampling circumferences and areas of two ESD protection devices. According to another variation, an equation is defined in which a third value (an ESD breakdown current) is a sum of a first value and a second value, the first value being obtained by multiplying a circumference of an ESD protection device by a first proportional constant, the second value being obtained by multiplying an area of the ESD protection device by a second proportional constant. Then, circumferences and areas of first and second ESD protection samples are calculated. Next, first and second equations are derived by reflecting the first and second circumferences and areas to the equation.