2SA539Y Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.2 A
• Collector Dissipation: 0.4 W
• DC Current Gain (h_fe): 120 to 240
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SA539Y is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads.
Here is an image showing the pin diagram of this transistor.The 2SA539Y transistor can have a current gain of 120 to 240. The gain of the 2SA539 will be in the range from 40 to 240, for the 2SA539O it will be in the range from 70 to 140, for the 2SA539R it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SA539Y might only be marked "A539Y".The complementary NPN transistor to the 2SA539Y is the 2SC815Y.The 2SA1037 (SOT-23), 2SA1037-Q (SOT-23), 2SA1483 (SOT-89), 2SA1483-Y (SOT-89), 2SA812 (SOT-23), FJX733 (SOT-323), FJX733Y (SOT-323) and KSA812 (SOT-23) is the SMD version of the 2SA539Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The KSA539Y, KTA539-Y is the TO-92 version of the 2SA539Y.You can replace the 2SA539Y with the 2SA697, 2SA708, 2SA708Y, BC527, BC527-16, BC528, BC528-16, BCX79, KN2907A, KSA539, KSA539Y, KSA708, KSA708Y, KSP2907A, KSP55, KSP56, KSP8598, KSP8599, KTA539, KTA539-O, KTA539-Y, KTN2907A, MPS2907A, MPS2907AG, MPS4354, MPS4355, MPS4356, MPS751, MPS751G, MPS8598, MPS8598G, MPS8599, MPS8599G, MPSA55, MPSA55G, MPSA56, MPSA56G, MPSW55, MPSW55G, MPSW56, MPSW56G, NTE159, P2N2907A, P2N2907AG, PN200, PN2905A, PN2907A, PN4354, PN4355, PN4356, ZTX550 or ZTX951.