The packaging of 2N2222 is metallic while 2N222 is a plastic case. Used in motor driver and switch circuits.It is part of projects that need less power to operate.Its uses in Inverters designs and projects.It is used in RF circuits since it has the ability to handle high-frequency values.It is the main part of the Darlington pair.It is used in differnt types of robotics projects and embedded systems.The main applications of PN2222 are explained here.Here are main differences between PN2222 and PN2222A are explained.The P2N2222 has a different order of pinouts than the metallic casing 2N2222, with its emitter and collector connections switched other plastic-case transistors also have different pinouts.These two are the same transistor but there is a high value of maximum absolute for PN2222A.Here are some points explained to find the difference between PN2222 and PN2222A. Its operation is like the other types of BJT transistors.
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