Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-126
Pinout of 2SD439-E
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SD439-E transistor can have a current gain of 100 to 200. The gain of the 2SD439 will be in the range from 60 to 320, for the 2SD439-D it will be in the range from 60 to 120, for the 2SD439-F it will be in the range from 160 to 320.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SD439-E might only be marked "D439-E".
Complementary PNP transistor
The complementary PNP transistor to the 2SD439-E is the 2SB559-E.
SMD Version of 2SD439-E transistor
The BCX68 (SOT-89) and BCX68-16 (SOT-89) is the SMD version of the 2SD439-E transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SD439-E transistor