Here is an image showing the pin diagram of this transistor.
Classification of hFE
The KTD718 transistor can have a current gain of 55 to 160. The gain of the KTD718-O will be in the range from 80 to 160, for the KTD718-R it will be in the range from 55 to 110.
Complementary PNP transistor
The complementary PNP transistor to the KTD718 is the KTB688.