Note: Some companies call 2N2222 transistor "2N2222A' now and manufactures 2N2222A only. Due to this reason, the current rating of 2N2222A is slightly lower than 2N2222.ĭue to different packaging, their pinout also differs, as shown below. The Collector to Base, Emitter to Base, and Collector to Emitter voltage ratings of 2N2222 and 2N2222A are 60V, 30V, 5V, and 75V, 40V, 6V respectively.Īlso, the 2N2222 comes in metal packaging whereas the 2N2222A is available in TO-92 plastic enclosure also. It’s important to note that both transistors have their updated versions with alphabet ‘A’ at the end i.e, 2N2222A and PN2222A What are 2N2222 and 2N2222A Transistors?īoth transistors are from the same family but the 2N2222A has higher Maximum absolute ratings than 2N2222. The other absolute maximum ratings are similar. PN2222 is the TO-92 plastic version of 2N2222, hence ‘P’ in PN2222.ĭue to the plastic enclosing, the collector power dissipation and storage temperature ratings of PN2222 is less than 2N2222.
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