The selection for the prefect equivalent of 2n2222 NPN transistor includes many aspects of the transistor such as electrical specifications, connection pinout details, and recommendation of application circuit based on the information.
The transistor equivalent had importance at switching and amplifier circuits, purpose especially pointed to circuit designing and repairing replacement of transistor.
In this 2n2222 equivalent post, we concentrate on combining the basic electrical specifications and connection details of the equivalent transistors for the 2n2222 transistor.
2n2222 transistor equivalent
NTE123a is a good equivalent for 2n2222 transistor, the pinout details, package (TO-18), max current (800mA) and noise figure (4db) are the same on NTE123A and 2n2222 transistor.
The collector to base voltage of 2n2222 is 60v and for NTE123A it is 75v, then the collector to emitter voltage at 2n2222 is 30v and on the NTE123A it is 40v and the emitter to base voltage of 2n2222 is 5v and for the NTE123A it is 6v.
The DC gain at 2n2222 is 30 to 300Fe and at NTE123A it is 100 to 300HFe and the power dissipation at 2n2222 is 400Mw and at NTE123A it is 500Mw.
The transition frequency of 2n2222 is 250MHz and for NTE123A it is 300MHz, and the junction temperature of 2n2222 is 200˚C and at NTE123A it is 150˚C.
The thermal resistance on the case of 2n2222 is 146k/w and for NTE123A it is not found.
The 2n2221A transistor is one of the best equivalent transistors for 2n2222, the pinout details, package (TO-18), max current (800mA), transition frequency (250MHz), and junction temperature (200˚C) specifications of both 2n2222 and 2n2221A are the same.
The collector to base voltage of the 2n2222 is 60v and for 2n2221A it is 75v and the collector to emitter voltage of 2n2222 is 30v and at 2n2221A it is 40v then the emitter to base voltage of 2n2222 is 5v and at 2n2221A it is 6v.
The power dissipation of 2n2222 is 400Mw and at 2n2221A it is 500mw, and the DC gain of 2n2222 is 30 to 300HFe and for 2n2221A it is 100 to 300HFe.
The thermal resistance of 2n2222 is 146k/w and at 2n2221A it is 325k/w and the noise figure of 2n2222 is 4db but at 2n2221A it is not found.
2n2222 SMD equivalent
The SMD equivalent for the 2n2222 transistor is the 2n2222 SMD version transition, that is MMBT2222A (SOT-23) package and also BCW65 (SOT-23) package.
Almost all the electrical specifications of 2n2222 and SMD version transistors are the same.