Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-126
Pinout of 2SB631-D
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SB631-D transistor can have a current gain of 60 to 120. The gain of the 2SB631 will be in the range from 60 to 320, for the 2SB631-E it will be in the range from 100 to 200, for the 2SB631-F it will be in the range from 160 to 320.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SB631-D might only be marked "B631-D".
Complementary NPN transistor
The complementary NPN transistor to the 2SB631-D is the 2SD600-D.
SMD Version of 2SB631-D transistor
The 2SA1368 (SOT-89) and 2SA1368-C (SOT-89) is the SMD version of the 2SB631-D transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SB631-D transistor