The KSA708O is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads. The KSA708CO transistor (with suffix "C") is the center collector version of the KSA708O. Here is an image showing the pin diagram of this transistor.
Classification of hFE
The KSA708O transistor can have a current gain of 70 to 140. The gain of the KSA708 will be in the range from 40 to 400, for the KSA708R it will be in the range from 40 to 80, for the KSA708Y it will be in the range from 120 to 240.
Complementary NPN transistor
The complementary NPN transistor to the KSA708O is the KSC1008O.