![]() The 2N2222 's maximum collector current is 800mA, while the bc547 's is 100mA. The collector to the base voltage at 2N2222 is 60v, while it is 50v at bc547, while the collector to emitter voltage at 2N2222 is 30v, while it is 45v at BC547. The emitter to base voltage at 2N2222 is 5v, while it is 6v at BC547. ![]() On the 2N2222, the pinout is emitter, base, and collector, whereas, on the BC547, it is collector, base, and emitter. The BC547 transistor had a to-92 package, but 2N2222 had to-92 packages as well, such as PN2222 and KN2222. The 2N transistors came in a to-18 package, which implies they were packaged in a metal container. ![]() The 2N2222 is a more powerful transistor than the BC547. ![]()
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