2SB1253 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -110 V
• Collector-Base Voltage, max: -130 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -6 A
• Collector Dissipation: 50 W
• DC Current Gain (h_fe): 5000 to 30000
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3PF

Here is an image showing the pin diagram of this transistor.The 2SB1253 transistor can have a current gain of 5000 to 30000. The gain of the 2SB1253-P will be in the range from 5000 to 15000, for the 2SB1253-Q it will be in the range from 8000 to 30000.Sometimes the "2S" prefix is not marked on the package - the 2SB1253 might only be marked "B1253".The complementary NPN transistor to the 2SB1253 is the 2SD1893.You can replace the 2SB1253 with the 2SB1254, 2SB1255 or 2SB1625.