This pin allows the current to come out of the transistor.Īs mentioned earlier, in the 2N2222A transistor, the dopped layer is embedded between two n-dopped layers. This pin controls the biasing of the transistor. This pin allows the current to enter the transistor form here.

2N2222A Transistor Pin Configuration, Pin diagram, Pinout Pin No. The pin configuration/pin diagram and functionality of the 2N2222A Transistor are shown below. It consists of three terminals namely, collector, base, and emitter. It is commonly used in very high-frequency amplifiers.ĢN2222A Transistor Pin Configuration/Pin diagram/Pinout Hence, we can say that it is ideal for applications that require low to medium current.

Therefore, when the 2N2222A transistor is fully biased, then it allows a maximum of 800 mA current to flow across the collector emitter. It also offers a constant DC collector current like 800 mA. It is accessible in the package of To-92. It is a current controlled transistor, specially outlined to have fairly high speed even in low power, low to medium current, and medium voltage. Since it’s an NPN transistor so the collector and emitter are reverse biased and the base is forward biased. It is a common NPN Bipolar Junction Transistor i.e., one P-doped layer stands between the two N-doped layers. Like every other amplifier, even a 2N2222A transistor is also used for amplification and switching.

Working Principle of 2N2222A Transistor.

If some data source only has data for the active region, this is probably good enough. In other words, all of the non-linearities are important, and the behaviour in regions outside of as well as including the active region are also important. I am interested in writing some simulations involving BJTs which requires more information than can be obtained from the typical transistor equations. Some might become dependent on each other if a complete circuit is drawn including an impedance on the base and collector (or emitter) nodes.Īre there any example devices which have (presumably large) tables of data available for download for measurements of these parameters? I don't know if these are all independent - I believe they all are.

Transistor temperature, which other variables such as the Collector-Emitter current, might have a second order effect from.

Transistor HFE (beta) which is a function of temperature.

To explain further, for a simple BJT circuit we have the following variables. Is there anywhere I can download some current-voltage data for a bipolar junction transistor? (It doesn't matter that much which one.)

Download free 2n2222