2SB744-Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -70 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -3 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 160 to 320
• Transition Frequency, min: 45 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SB744-Y transistor can have a current gain of 160 to 320. The gain of the 2SB744 will be in the range from 60 to 320, for the 2SB744-O it will be in the range from 100 to 200, for the 2SB744-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SB744-Y might only be marked "B744-Y".The complementary NPN transistor to the 2SB744-Y is the 2SD794-Y.You can replace the 2SB744-Y with the 2SB1143, 2SB1165, 2SB1166, 2SB744A, 2SB744A-Y, 2SB986, BD132, BD188, BD190, KSB744, KSB744-Y, KSB744A, KSB744A-Y, MJE235 or MJE252.