2SA1220-Q Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 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 2SA1220-Q transistor can have a current gain of 100 to 200. The gain of the 2SA1220 will be in the range from 60 to 320, for the 2SA1220-P it will be in the range from 160 to 320, for the 2SA1220-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SA1220-Q might only be marked "A1220-Q".The complementary NPN transistor to the 2SA1220-Q is the 2SC2690-Q.The 2SA1201 (SOT-89), 2SB806 (SOT-89), 2SB806-KR (SOT-89), 2SD1007 (SOT-89), 2SD1007-HR (SOT-89) and KTA1661 (SOT-89) is the SMD version of the 2SA1220-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1220-Q with the 2SA1021, 2SA1021-O, 2SA1220A, 2SA1220A-Q, 2SA1249, 2SA1249-R, 2SA1408, 2SA1408-O, 2SA1507, 2SA1507-R, 2SB649, 2SB649-C, 2SB649A, 2SB649A-C, KSA1220, KSA1220-O, KSA1220A, KSA1220A-O, KTA1700, KTA1704 or KTA1704-Y.