2SB744-R 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): 60 to 120
• 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-R transistor can have a current gain of 60 to 120. 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-Y it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB744-R might only be marked "B744-R".The complementary NPN transistor to the 2SB744-R is the 2SD794-R.You can replace the 2SB744-R with the 2N4919, 2N4919G, 2N4920, 2N4920G, 2SB744A, 2SB744A-R, BD132, BD176, BD178, BD180, BD180G, BD188, BD190, BD438, BD438G, BD440, BD440G, BD442, BD442G, BD786, BD788, BD788G, BD790, KSB744, KSB744-R, KSB744A, KSB744A-R, KSE171, KSE172, MJE171, MJE171G, MJE172, MJE172G, MJE233, MJE234, MJE235, MJE250, MJE251 or MJE252.