2SB1115-YM Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 2 W
• DC Current Gain (h_fe): 135 to 270
• Transition Frequency, min: 120 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The 2SB1115-YM transistor can have a current gain of 135 to 270. The gain of the 2SB1115 will be in the range from 135 to 600, for the 2SB1115-YK it will be in the range from 300 to 600, for the 2SB1115-YL it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SB1115-YM might only be marked "B1115-YM".The complementary NPN transistor to the 2SB1115-YM is the 2SD1615-GM.You can replace the 2SB1115-YM with the 2SA1364, 2SB1115A, 2SB1115A-YQ, 2SB1122, 2SB1123, 2SB1124, 2SB766A, 2STF2550, BSR31 or BSR33.