"ETEMP -55 DEG C TO + 75 DEG C CELL POWER 175 MW-DERATE 3MW DEG ABOVE 25DEG C INPUT SIGNAL-CURRENT 40 MA-DERATE 1MA DEG ABOVE 35 DEG C FORWARD VOLTAGE AT 40 MA 2 V MAX REVERSE VOLTAGE3.0 V ISOLATION VOLTAGE 1500 V MIN CELL SHUNT CAPACITANCE 5 PF COUPLING CACITANCE 0.5 PF OUTPUT RESISTANCE WITH INPUT CURRENT 10 MA DARK ADAPTED 125OHMS,LIGT ADAPTED 200 OHMS CELL VOLTAGE MAX 50V 4 WIRE LEADS 0.400 IN. LG 0.380 IN. W 0.320 IN. THK PLASTIC CASE"