2N2904 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -40 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.6 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 40 to 120
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the 2N2904 is the 2N2218.The PN2904 is the TO-92 version of the 2N2904.You can replace the 2N2904 with the 2N2102, 2N2102A, 2N2904A, 2N4036, 2N4234, 2N4235, 2N4236, 2N4404, 2N4406, 2N5323, 2N5333, 2N6190, 2SA503, 2SA512, BC160, BC161, BC460 or BC461.