Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-3P
Pinout of 2SD998-O
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SD998-O transistor can have a current gain of 80 to 160. The gain of the 2SD998 will be in the range from 55 to 160, for the 2SD998-R it will be in the range from 55 to 110.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SD998-O might only be marked "D998-O".
Complementary PNP transistor
The complementary PNP transistor to the 2SD998-O is the 2SB778-O.
Replacement and Equivalent for 2SD998-O transistor