Ultra Librarian provides the PN2222A, and many transistors that are functionally similar, enabling designers to choose reliable transistors for their projects. Current tolerances can vary significantly between companies, even though the component itself is specialized for higher current loads. Designers should make sure, when referencing a datasheet, to use the most recently available sheet that corresponds to the company that made their specific PN2222A. Many different companies have created variants of the PN2222A, resulting in many datasheets detailing components with slightly different properties. This is especially important when combining the PN2222A with another transistor to create a Darlington pair, which amplifies current through one transistor, then another, creating potentially greater current levels than one transistor could handle alone. When choosing between the PN2222A and similar transistors, designers should be careful to choose one that can handle the current load their project requires. The BC547 is similar to the PN2222A, but cannot handle the same high current loads. Different datasheets say that this current load could be significantly smaller, but compared to other transistors, the PN2222A always handles high current loads. The PN2222A can switch between high current loads up to 800 mA, which distinguishes it from similar transistors. It is also important that designers not stress the PN2222A to its maximum ratings for an extended period of time. The PN2222A is not suited for applications that require extremely high operating temperatures or voltages, although it can handle high current loads. This last use is of particular interest, since it allows amateur electronics engineers to conceptualize IoT projects and democratize electronics development. Complex projects for the Internet of Things (IoT) can also make use of the PN2222A. It has been commonly used in Arduino projects for more than a decade and can be paired with more robust transistors like MOSFETs. The PN222A is suitable for televisions, consumer electronics, home appliances, and robotics. These structures are more compact than a usual transistor and can save space in electronics projects. Another structure places the base, collector, and emitter prongs all on one side of the large rectangular base with a fourth, larger collector prong on the opposing side. One structure can place the base and emitter prongs on one side of a large rectangular base with the collector prong on the other. Alternative structures have dramatically shorter prongs than normal transistors. The PN2222A can be structured differently from the traditional transistor “jellyfish” shape, where three prongs extend downward from a solid base. Taking into account NPN variations, PNP complementary types, and transistors that function similarly, this overview can be applied to more than a dozen transistors. Its PNP complementary type, which can function similarly, is PN2907A. The PN2222A is commonly called a small signal transistor due to its low energy applications. It has an extremely low switching delay time of 10 nanoseconds, potentially as low as 5 nanoseconds, which has likely contributed to its continued popularity. The component can dissipate 625 mW of power, giving it good thermal control for not being a MOSFET, which is designed for thermal dissipation. It is an NPN type transistor with an operating temperature range of -55 to 150 degrees Celsius. Like most transistors, the PN2222A can function as a transistor, switch, or amplifier. There are many transistors with different names that are almost functionally identical to the PN2222A. ![]() The PN2222A is equivalent to the 2N2222A, and the names are often used interchangeably among the electronics community. ![]() Depending on the datasheet, it is characterized as a transistor or an amplifier, but it can perform both of those functions. The PN2222A, also known as the PN2222, is a general-purpose transistor best suited to applications that don’t require high stress on the component. Variants of the PN2222A in the Ultra Librarian search engine.
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