2SB1149-M Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -100 V
• Collector-Base Voltage, max: -100 V
• Emitter-Base Voltage, max: -8 V
• Collector Current − Continuous, max: -3 A
• Collector Dissipation: 15 W
• DC Current Gain (h_fe): 2000 to 5000
• 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 2SB1149-M transistor can have a current gain of 2000 to 5000. The gain of the 2SB1149 will be in the range from 2000 to 15000, for the 2SB1149-K it will be in the range from 5000 to 15000, for the 2SB1149-L it will be in the range from 3000 to 7000.Sometimes the "2S" prefix is not marked on the package - the 2SB1149-M might only be marked "B1149-M".You can replace the 2SB1149-M with the BD682, BD682G, KSB1149, KSB1149-O or MJE254.