Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-220F
Pinout of 2SD1890
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SD1890 transistor can have a current gain of 5000 to 30000. The gain of the 2SD1890-P will be in the range from 5000 to 15000, for the 2SD1890-Q it will be in the range from 8000 to 30000.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SD1890 might only be marked "D1890".
Complementary PNP transistor
The complementary PNP transistor to the 2SD1890 is the 2SB1250.