![]() Motors, for example, typically require in the range of about 75mA to power on. These all normally require much less than 200mA toīe powered on. Typical components that may require a transistor in order toīe driven are motors, buzzers, solenoids, and high-power LEDs. Will suffice to power most electronic components. 200mA is still a great amount of current that However, itĭoesn't necessarily mean it's the transistor that you should use. ![]() So in this way, the 2N2222 does have superiority in that it can handle greater current. A 2N2222 can handle up to 5 times that amount, since it can handle up to 1A (ampere) ofĬurrent flow from the emitter to collector to power on a load. A 2N3904 can handle up to 200mA (milliamperes) of current flow from the emitter Is the amplified current that flows from the emitter terminal to the collector terminal to power on a load that How they differ is that the 2N2222 can handle greater operating collector current. There's no difference in regard to this aspect. Since the 2N3904 and the 2N2222 have the same maximum V CEO voltage, This wouldn'tīe acceptable, since it exceeds the maximum V CEO. Transistor and the load will consume 20V, this means that the remainder of the voltage will fall across the transistor, which will be 70V-20V=50V. For example, say, we applied 70V to the collector of the That the transistor can tolerate minus the voltage drop across the load connected to the collector. ![]() In simplicity, this really means that 40V is the maximum amount of voltage They are also identical in the amount of voltage they can handleĪross the collector-to-emitter terminals- both can handle up to 40V. In these ways, the 2N3904 and the 2N2222 are both identical. Must receive positive voltage to the base and collector terminals in order to operate. This means that in a circuit, voltage and current are biased to them the same exact way- they both They are both controlled by current applied to the base and provide current amplification at the collector-emitterĪs they are both NPN-type BJTs, they are composed of 2 layers of N material sandwiching a layer of As described, the 2N3904 and the 2N2222 are both bipolar junction transistors (BJTs).
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