2n2222

Schematic .pdf 71.2 KB Shared

A 71.2 KB PDF with data for the 2N2222, filed with schematics in this index. The 2N2222 is a staple NPN small-signal transistor used for switching relays, LEDs and logic loads as well as for small amplification stages. The sheet gives absolute maximum ratings, gain groupings, saturation voltages and the lead arrangement needed for diode-mode checks with a multimeter. Note that the plain 2N2222 has somewhat lower voltage ratings than the A version, so check which one the circuit actually requires.

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