The 2N3904 is an NPN bipolar junction transistor commonly used for low-power applications. It serves as a complementary pair with the 2N3906 and can also be paired with the 2N3905 for symmetrical circuits. This transistor is housed in a TO-92 package and operates within a temperature range of -55°C to +150°C, making it suitable for a variety of environmental conditions.
Key specifications include a collector-emitter voltage (VCEO) of up to 40V, a collector-base voltage (VCBO) of 60V, and an emitter-base voltage (VEBO) of 6V. The maximum continuous collector current (Ic) is 200mA, with a power dissipation of 625mW at 25°C, increasing by 5mW/°C for higher temperatures. The DC current gain (hFE) ranges from a minimum of 100 to a maximum of 300, providing flexibility in circuit design.
The 2N3904 has a minimum current gain-bandwidth product (Ft) of 250MHz, enhancing its performance in high-frequency applications. Its complementary counterpart, the 2N3903, offers a similar bandwidth but with a lower hFE range of 50-200. Meanwhile, the 2N3906, which pairs with the 2N3904, boasts an even higher current gain-bandwidth product of 300MHz and an hFE range of 100-400.
For those looking for more detailed visual information, refer to the attached image showing the pin diagram and additional parameters of the 2N3904. This transistor is ideal for use in amplifiers, switches, and other electronic circuits where reliable performance under moderate conditions is required. Whether you're working on a small-scale project or integrating it into a larger system, the 2N3904 remains a dependable choice for engineers and hobbyists alike.
In summary, the 2N3904 is a versatile and widely-used transistor that provides excellent value for its price point. Its robust features make it a go-to option for many electronics enthusiasts and professionals. If you're considering this component for your next build, keep in mind its operational limits and ensure compatibility with your specific application requirements.
In summary, the 2N3904 is a versatile and widely-used transistor that provides excellent value for its price point. Its robust features make it a go-to option for many electronics enthusiasts and professionals. If you're considering this component for your next build, keep in mind its operational limits and ensure compatibility with your specific application requirements.ATX Power Supply
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