specification tolerance cells mono crystal parameter values unit 62.5mmx125mm square operating temperature 45 ℃ number of cells 36 (4x9) series connected hail diameter @ 80km/h up to 25 mm typical application 12v dc continuous wind pressure up to 24 m/s maximum voltage 600v dc connection terminals size mm 630(l) x540(w) x35(h) weight 4.5 kg connector type connector type with box02 front glass 3.2 mm thick electrical typical values (2) model rating power (pm) efficiency of cell efficiency of module tolerance rated current rated voltage (vm) short circuit current (isc) open circuit voltage (voc) (im) jjsm40d 40w ≥14.96% 11.76% ±5% 2.29a 17.5v 2.50a 21.5v 　 　 　 　 　 　 　 　 　 　 　 　 　 noct:48℃+2oc temperature coefficient voltage: 0.16v/℃ / -(160+10)mv/oc temperature coefficient of power: -(0.5+0.05)%/oc temperature coefficient current: 0.06%/℃ / (0.065+0.015)%/oc note: defined as standard deviation of thousands measurements. absolute power