2SB740-B Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -70 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 0.9 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SB740-B transistor can have a current gain of 100 to 200. The gain of the 2SB740 will be in the range from 100 to 320, for the 2SB740-C it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SB740-B might only be marked "B740-B".The complementary NPN transistor to the 2SB740-B is the 2SD789-B.The BSP31 (SOT-223), BSR31 (SOT-89), FMMT591 (SOT-23), FMMT591Q (SOT-23), KTA1668 (SOT-89) and KTA1668Y (SOT-89) is the SMD version of the 2SB740-B transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB740-B with the 2SA1020, 2SA1283, 2SA1315, 2SA1534A, 2SA684, 2SB1229, 2SB1229-R, 2SB647, 2SB647A, 2SB647AC, 2SB647C, 2SB764, 2SB764-E, 2SB892, 2SB892-R, 2SB985, 2SB985R, KTA1281, KTA708, KTA708-Y, KTB764 or KTB764-Y.