Here is an image showing the pin diagram of this transistor.
Classification of hFE
The KSB1151-Y transistor can have a current gain of 160 to 320. The gain of the KSB1151 will be in the range from 100 to 400, for the KSB1151-G it will be in the range from 200 to 400, for the KSB1151-O it will be in the range from 100 to 200.
Complementary NPN transistor
The complementary NPN transistor to the KSB1151-Y is the KSD1691-Y.
SMD Version of KSB1151-Y transistor
The 2STF2360 (SOT-89), 2STN2360 (SOT-223), BDP950 (SOT-223) and STN951 (SOT-223) is the SMD version of the KSB1151-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for KSB1151-Y transistor