elenth If=20mA λd620625630 nm 515520525 463468472 Forward voltage If=20mA Vf1.82.12.5 V 2.83.03.6 2.83.03.6 Luminous intensity If=20mA Iv200300--- mcd 600800--- 200300--- Viewing ang le at 50% IV If=20mA2θ1/2 --- 120 --- Deg Reverse current If=20mA Ir --- 10 ---