2N4258A Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -12 V
• Collector-Base Voltage, max: -12 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 0.31 W
• DC Current Gain (h_fe): 30 to 120
• Transition Frequency, min: 700 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-106

Here is an image showing the pin diagram of this transistor.The PN4258A is the TO-92 version of the 2N4258A.You can replace the 2N4258A with the 2N3646 or 2N4258.