2SA1275-O Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -160 V
• Collector-Base Voltage, max: -160 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: 50 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 2SA1275-O transistor can have a current gain of 100 to 200. The gain of the 2SA1275 will be in the range from 60 to 320, for the 2SA1275-R it will be in the range from 60 to 120, for the 2SA1275-Y it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA1275-O might only be marked "A1275-O".The complementary NPN transistor to the 2SA1275-O is the 2SC3228-O.The KST93 (SOT-23) is the SMD version of the 2SA1275-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The KTA1275O is the TO-92 version of the 2SA1275-O.You can replace the 2SA1275-O with the 2SA1013, 2SA1013O, KSA1013, KSA1013O, KTA1275 or KTA1275O.