2SB1115A-YQ Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -80 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 2SB1115A-YQ transistor can have a current gain of 135 to 270. The gain of the 2SB1115A will be in the range from 135 to 400, for the 2SB1115A-YP it will be in the range from 200 to 400.Sometimes the "2S" prefix is not marked on the package - the 2SB1115A-YQ might only be marked "B1115A-YQ".You can replace the 2SB1115A-YQ with the 2SA1364, BSR31 or BSR33.