Similarly in the cut-off region, no current flows from emitter to collector then it acts as a turn off the switch.Therefore the user cannot connect the load whose current is greater than 800mA
#Tt2222 transistor full#
In saturation region full current flows from emitter to a collector that’s range is 110 to 800mA and in this condition, it acts as a turn on a switch. In switching application it works in two regions such as saturation and cut off region Therefore, it could be used in that application such as switching and amplifications where BC547 transistor has been using. But the only difference between them is the continuous collector current and total power dissipation of this transistor. This 2N2222 NPN transistor has almost the same technical specifications as BC547 NPN transistor. Maximum thermal resistance from junction to ambient is R0JA= 325C0/W. Maximum thermal resistance from junction to a case is R0JC= 150C0/W. Total device power dissipation is PT = 1W. Dc continuous collector current is IC = 800mA. Collector to base voltage is VCBO= 75 when the emitter is open. Emitter to base voltage is VEBO= 6V when the collector is open. Collector to emitter voltage is VCEO = 50V when the base is open. The collector pin is an output pin and it is used for providing transistor current to the output load.ĢN2222 NPN Transistor Electrical Features The base pin is a control pin and it is used for controlling emitter to base current. The emitter pin is used for draining out the whole transistor current. Its pin configuration diagram is shown here according to the datasheet: These pins are used in the circuit for turning on or off the transistor. Pin Configuration of 2N2222 NPN Transistor: This 2N2222 NPN transistor has three pins emitter, base, and collector. It is friendly to use and easily available online market in a TO-92 package. It works on high transition frequency value 250MHz with delay time 10ns, rise time 25ms, storage time 225ms and fall time 60ms. It means it has a high collector therefore it is mostly used in that circuits where low to medium current is required. 
Example of Interfacing DC motor as a switch using ArduinoĢN2222 provides continuous dc collector current is 800mA.2N2222 NPN Transistor Electrical Features.
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