2SA817A-Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.4 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 100 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 2SA817A-Y transistor can have a current gain of 120 to 240. The gain of the 2SA817A will be in the range from 70 to 240, for the 2SA817A-O it will be in the range from 70 to 140.Sometimes the "2S" prefix is not marked on the package - the 2SA817A-Y might only be marked "A817A-Y".The complementary NPN transistor to the 2SA817A-Y is the 2SC1627A-Y.The 2SA1202 (SOT-89), 2SA1202-Y (SOT-89), 2SA1620 (SOT-23), 2SA1620-Y (SOT-23), KTA1662 (SOT-89) and KTA1662Y (SOT-89) is the SMD version of the 2SA817A-Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA817A-Y with the 2N5401C, 2SA1275, 2SA1284, 2SA1315, 2SA1315-Y, 2SA1319, 2SA1450, 2SA935, 2SA935-Q, 2SA965, 2SA965-Y, 2SA984K, 2SB560, 2SB647, KSA1013, KSA709C, KSA709CY, KSA916, KSA916Y, KSP8599C, KTA1023, KTA1023-O, KTA1023-Y, KTA1274, KTA1274Y or KTA1275.