PN2222A Discrete Semiconductor Products

Series:	--
Packaging:	Bulk
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	800mA
Voltage - Collector Emitter Breakdown (Max):	40V
Vce Saturation (Max) @ Ib, Ic:	1V @ 50mA, 500mA
Current - Collector Cutoff (Max):	10nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 150mA, 10V
Power - Max:	625mW
Frequency - Transition:	300MHz
Operating Temperature:	-65°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92

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PN2222A is a small signal NPN transistor with an average current gain of 100 to 300, mainly used as an electrically operated switch or amplifier. It belongs to a commonly used component for general-purpose low-power amplifying and switching applications in the signal and power control sections of digital, interface and control circuit.PN2222A is a bipolar junction transistor with an NPN construction. It consists of three sections, the emitter, base, and collector. The emitter section is the negative terminal, where current flows in and out of the transistor. The base section is the positive terminal and controls the current flowing between the emitter and the collector sections. The collector section serves as the output, where the amplified signal is taken from.The working principle of PN2222A is based on the fact that the current flowing through it is directly proportional to the voltage applied across the base and emitter of the transistor. This is known as the "transistor action". When a small current is applied to the base, the transistor will allow a much larger current to flow from the emitter to the collector. Thus, providing amplification of the signal at the output.PN2222A is mainly used in circuits that require low-power amplifying and switching applications. It can be used in digital circuits, such as those used in digital audio amplifiers and audio power amplifiers. It is also often used as a linear switching element in voltage and current regulators, allowing the user to control the amount of current and voltage flowing through a given circuit. It is also common to use PN2222A in embedded systems as a series of switches for controlling the status of a given system.In addition to its real-world applications, PN2222A is also often used as a miniaturized device in experiments, due to its low cost and availability. It is excellent for university and scientific experimentation, as it can accurately measure and amplify a wide range of signals. This makes the PN2222A ideal for a variety of experiments, such as those requiring precise measurements, or those requiring switching or amplifying of small signals such as audio streams.To sum up, PN2222A is a low-power NPN transistor with average current gain of 100 to 300. It is commonly used in a variety of general-purpose low-power amplifying and switching applications. It is also often used as a linear switching element in voltage and current regulators, as well as in embedded systems. Furthermore, it is also excellent for university and scientific experimentation due to its low cost and availability.

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