2SA1220A-Q Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -160 V
• Collector-Base Voltage, max: -160 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1.2 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 100 to 200
• Transition Frequency, min: 175 MHz
• 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 2SA1220A-Q transistor can have a current gain of 100 to 200. The gain of the 2SA1220A will be in the range from 60 to 320, for the 2SA1220A-P it will be in the range from 160 to 320, for the 2SA1220A-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SA1220A-Q might only be marked "A1220A-Q".The complementary NPN transistor to the 2SA1220A-Q is the 2SC2690A-Q.You can replace the 2SA1220A-Q with the 2SA1249, 2SA1249-R, 2SA1507, 2SA1507-R, 2SB649A, 2SB649A-C, KSA1220A, KSA1220A-O or KTA1700.