2SA594-R 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: 5 W
• DC Current Gain (h_fe): 40 to 80
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -65 to +175 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The 2SA594-R transistor can have a current gain of 40 to 80. The gain of the 2SA594 will be in the range from 40 to 240, for the 2SA594-O it will be in the range from 70 to 140, for the 2SA594-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SA594-R might only be marked "A594-R".The complementary NPN transistor to the 2SA594-R is the 2SC594-R.The 2SA1483 (SOT-89), 2SA1483-R (SOT-89), FJX733 (SOT-323) and FJX733R (SOT-323) is the SMD version of the 2SA594-R transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA594-R with the 2N2102, 2N2102A, 2N2904A, 2N4036, 2N4235, 2N4236, 2N4404, 2N4406, 2N5151, 2N5323, 2N5333, 2N6190, 2SA503, 2SA503-R, 2SA512, 2SA512-R, BC161, BC161-6, BC303, BC303-4, BC304, BC304-4 or BC461.