MA TLAB/SIMULINK is a universal software used in different fields. The 'SIMPOWER', 'SIMSCAPE' and 'SIMULINK' libraries are dedicated to electrical engineering domain. The power electronic devices models of these libraries do not reflect their effective functioning. In this work we are interested in the discrete power electronic device, the power PIN diode, we present the implementation of their behavioral electric model in MATLAB/SIMULINK. The integrated SIMULlNK PIN diode model is based on electric elements of SIMSCAPE library. Simulation results have been achieved and compared to manufacturer data to verify the validity of the model in the switching phase closure.