Hi Javier, I'm afraid it is not free, but I supposse that COMSOL could do the job or maybe the pde toolbox of Matlab. Both work with FEM analisis and let you control a wide range of variables. Regards --- Den tors 2009-05-07 skrev Javier Crespo: Från: Javier Crespo Ämne: [mems-talk] Silicon diode simulation... Till: mems-talk@memsnet.org Datum: torsdag 7 maj 2009 16.32 Dear all, Does anyone know any free tool that simulates the electrical characteristics of a silicon diode given its diffusion parameters and silicon resistivity?