Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-220
Pinout of 2SB511-D
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SB511-D transistor can have a current gain of 60 to 120. The gain of the 2SB511 will be in the range from 40 to 320, for the 2SB511-C it will be in the range from 40 to 80, for the 2SB511-E it will be in the range from 100 to 200, for the 2SB511-F it will be in the range from 160 to 320.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SB511-D might only be marked "B511-D".
Complementary NPN transistor
The complementary NPN transistor to the 2SB511-D is the 2SD325-D.
Replacement and Equivalent for 2SB511-D transistor