Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-126
Pinout of 2SB648A
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SB648A transistor can have a current gain of 60 to 200. The gain of the 2SB648A-B will be in the range from 60 to 120, for the 2SB648A-C it will be in the range from 100 to 200.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SB648A might only be marked "B648A".
Complementary NPN transistor
The complementary NPN transistor to the 2SB648A is the 2SD668A.