2N2222 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.8 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 100 to 300
• Transition Frequency, min: 250 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-18

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the 2N2222 is the 2N2907.The BCW65 (SOT-23), FMMT2222 (SOT-23), FMMT2222R (SOT-23), KN2222S (SOT-23), KTN2222S (SOT-23), KTN2222U (SOT-323), MMBT2222 (SOT-23), PMBT2222 (SOT-23) and PMST2222 (SOT-23) is the SMD version of the 2N2222 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The KN2222, KTN2222, MPS2222, PN2222 is the TO-92 version of the 2N2222.You can replace the 2N2222 with the 2N2221A, 2N2222A or NTE123A.