2N2218A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 75 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.8 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 40 to 120
• Transition Frequency, min: 250 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 PNP transistor to the 2N2218A is the 2N2904A.The PN2218A is the TO-92 version of the 2N2218A.You can replace the 2N2218A with the 2N3020, 2N3108, 2N3110, 2N4030, 2N4031, 2N4237, 2N4238, 2N4239, 2N5321, 2N5334, 2N5335, 2N5336, 2SC108A, 2SC109A, 2SC512, BC140, BC141, BC440 or BC441.