Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-220F
Pinout of 2SD1265A-O
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SD1265A-O transistor can have a current gain of 80 to 160. The gain of the 2SD1265A will be in the range from 30 to 160, for the 2SD1265A-P it will be in the range from 50 to 100, for the 2SD1265A-Q it will be in the range from 30 to 60.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SD1265A-O might only be marked "D1265A-O".
SMD Version of 2SD1265A-O transistor
The BDP951 (SOT-223) is the SMD version of the 2SD1265A-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SD1265A-O transistor