Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-126
Pinout of 2SB549-Q
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SB549-Q transistor can have a current gain of 100 to 200. The gain of the 2SB549 will be in the range from 40 to 320, for the 2SB549-P it will be in the range from 160 to 320, for the 2SB549-R it will be in the range from 60 to 120, for the 2SB549-S it will be in the range from 40 to 80.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SB549-Q might only be marked "B549-Q".
Complementary NPN transistor
The complementary NPN transistor to the 2SB549-Q is the 2SD415-Q.
SMD Version of 2SB549-Q transistor
The 2SA1201 (SOT-89), 2SB806 (SOT-89), 2SB806-KR (SOT-89), 2SD1007 (SOT-89), 2SD1007-HR (SOT-89) and KTA1661 (SOT-89) is the SMD version of the 2SB549-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SB549-Q transistor