OP506B,PHOTOTRANSISTOR 3MM 935NM NPN
OP506C,PHOTOTRANS SILICON NPN SIDE LOOK
OP506D,PHOTOTRANSMITTER SILICON NPN T-1
OP506W,PHOTOTRANSMITTER SILICON NPN T-1
OP508FA,PHOTOTRANS SILICON NPN FLAT LENS
OP508FB,PHOTOTRANS SILICON NPN FLAT LENS
OP508FC,PHOTOTRANS SILICON NPN FLAT LENS
OP509A,PHOTOTRANS SILICON NPN SIDE LOOK