Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-3P
Pinout of 2SA1803O
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SA1803O transistor can have a current gain of 80 to 160. The gain of the 2SA1803 will be in the range from 55 to 160, for the 2SA1803R it will be in the range from 55 to 110.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SA1803O might only be marked "A1803O".
Complementary NPN transistor
The complementary NPN transistor to the 2SA1803O is the 2SC4688O.
SMD Version of 2SA1803O transistor
The BDP952 (SOT-223) is the SMD version of the 2SA1803O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SA1803O transistor