Hi guys Going trough the data sheet for the LTV-4N35 i can't find any information about pin 6. I have not used photocouplers before so i kind of only knows the basics on them. From the diagram on the data sheet, i can see that the output side looks like a transistor with pin 6 being the base terminal ???, and of cource the transistor kicks also in when it sees the light from the LED inside. So the question is why is there no beta rating for pin 6 ?.