Abstract: Based  on the analysis of characteristics in single electron tunneling junction and  single-electron transistor,using the equivalent circuit method,macro-model was proposed based on the voltage-controlled unit.Simulation was executed subsequently to get characteristic curves.Comparison between curves was obtained by simulator,and ideal curves was done to indicate the same trend.Numerical calculations verify that the model is reasonable.

Key words: equivalent circuit, macro-model, nanometer tunneling junction, single-electron transistor