Electrical Characteristics Model Number BSM425M-72HPH BSM430M-72HPH BSM435M-72HPH BSM440M-72HPH BSM445M-72HPH BSM450M-72HPH BSM455M-72HPH Testing Condition STC Maximum Power (Pmax/W) 425 430 435 440 445 450 455 Open Circuit Voltage (Voc/V) 48.3 48.5 48.7 48.9 49.1 49.3 49.5 Short Circuit Current (Isc/A) 11.23 11.31 11.39 11.46 11.53 11.60 11.66 Voltage at Maximum Power (Vmp/V) 40.5 40.7 40.9 41.1 41.3 41.5 41.7 Current at Maximum Power (Imp/A) 10.50 10.57 10.64 10.71 10.78 10.85 10.92 Module Efficiency(%) 19.6 19.8 20 20.2 20.5 20.7 20.9 STC (Standard Testing Conditions): Irradiance 1000W/m², Cell Temperature 25 ℃, Spectra at AM1.5