Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-251
Pinout of 2SD1803-T
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SD1803-T transistor can have a current gain of 200 to 400. The gain of the 2SD1803 will be in the range from 70 to 400, for the 2SD1803-Q it will be in the range from 70 to 120, for the 2SD1803-R it will be in the range from 100 to 200, for the 2SD1803-S it will be in the range from 140 to 280.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SD1803-T might only be marked "D1803-T".
Complementary PNP transistor
The complementary PNP transistor to the 2SD1803-T is the 2SB1203-T.
SMD Version of 2SD1803-T transistor
The 2SD1624 (SOT-89), 2SD1624-T (SOT-89) and BDP949 (SOT-223) is the SMD version of the 2SD1803-T transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SD1803-T transistor