Part Number : 2SD1944
Function :High-current gain Power Transistor
Manufacturer : ROHM Semiconductor
Pinout : 
Description
2SB1639 ( -60V, -3A)
2SD2318, 2SD1944 (60V, 3A)
High DC current gain.
Datasheet PDF Download
Other datasheets in the file : 2SB1639, 2SD1944, 2SD2318, B1639, D1944