2N3904 Pinout, Datasheet and Equivalent Transistor
Before discussing the 2N3904 pinout; let’s explore some background. It is a widely used bipolar junction transistor (BJT). That is commonly employed in a wide range of electronic circuits. It is a small signal NPN transistor with a maximum collector current of 200 mA.
A maximum collector-base voltage of 40V, and a maximum emitter-base voltage of 6V.
This transistor is known for its versatility, low cost, and wide availability. Making it a popular choice for hobbyists and professionals alike. With its small size and low power consumption, this transistor is often used in audio amplifiers.
In switch mode power supplies, and other applications that require a low power signal amplification. Overall, this transistor is a reliable and commonly used transistor in the electronics industry.
2N3904 Pinout
The 2N3904 pinout can be easily found. This transistor is a three-terminal device with a standard pin configuration. The pins are typically labeled as the emitter (E), base (B), and collector (C) and are arranged in a specific order.
Looking at the transistor with the flat side facing you and the pins pointing down. The pin on the left is the emitter (E), the pin in the middle is the base (B), and the pin on the right is the collector (C).
The pin configuration for the 2N3904 pinout is as follows:
- Emitter (E) – left pin
- Base (B) – middle pin
- Collector (C) – right pin
It’s important to note that the pin configuration may differ slightly depending on the manufacturer. Or specific package type, so it’s always best to consult the datasheet.
Features of 2N3904 Transistor
The 2N3904 transistor is a small signal NPN bipolar junction transistor (BJT). With a variety of features that make it a popular choice for many electronic circuits. Here are some features explained:
Low cost: This transistor is inexpensive. This makes it an excellent choice for hobbyists and professionals alike who are looking to keep their costs low.
High gain: The transistor has a high DC gain. Typically ranging from 100 to 300, making it an ideal choice for small-signal amplification.
Low noise: This transistor has a low noise figure. Which makes it an excellent choice for high-fidelity audio amplifiers and other applications where low noise is important.
Wide operating range: The transistor can operate over a wide range of temperatures. Typically between -55°C and 150°C, making it suitable for use in many different environments.
Small size: The 2N 3904 is a small transistor, making it ideal for use in compact electronic circuits.
Versatility: The transistor is versatile and can be used in a wide range of applications. Including audio amplifiers, switching circuits, and many other electronic circuits.
Overall, the 2N 3904 transistor is a popular choice for many electronic circuits. Due to its low cost, high gain, low noise, wide operating range, small size, and versatility.
Where to Buy 2N3904 Transistor
Product | Product Detail | Price | Buy Now |
  | Chanzon 20 Values 400pcs Transistor Kit TO-92 Including (2N2222A 2N2907A 2N3904 2N3906 2N5551 2N5401 S8050 S8550 A1015 C1815 A42 A92 A733 C945 S9014 BC327B BC337B BC547B BC557B 2N7000) Each 20pcs | ||
  | NTE Electronics 2N3904 Silicon NPN Transistor for General Purpose Amplifier and Switch, 200 mA, 40V (Pack of 5) | ||
  | Todiys New 50 Pairs for 50Pcs 2N3904 + 50Pcs 2N3906 TO-92 NPN Transistor 3904 3906 2N3904 2N-3906 | ||
  | 100PCS 2N3904 NPN General Purpose Transistor | ||
  | Transistor Assorted Kit (TO-92) 18kindsx10pcs=180pcs 2N2222 S9013 S9014 S9015 S9018 S8050 S8550 5551 5401 2N3904 2N3906 C1815 | ||
  | 18values x50pcs DIP NP/NPN Transistor kit Box A733 SS8050 SS8550 A1015 C945 C1815 S8050 S8550 S9012-15 S9018 2N2222 2N3904 |
The 2N3904 transistor is a widely available and commonly used component in the electronics industry. So it can be purchased from a variety of sources. Here are some options for where to buy the 2N3904 transistor:
Online retailers: Many online retailers sell electronic components, including the 2N3904 transistor. Some popular options include Amazon, Digi-Key, Mouser, and Newark.
Local electronics stores: Many local electronics stores carry electronic components, including transistors like the 2N3904. Check your local directory for stores in your area.
RadioShack: RadioShack is a popular electronics retailer that has stores in many locations. They carry a variety of electronic components, including the 2N3904 transistor.
Electronic component suppliers: Many suppliers specialize in electronic components. And may offer bulk pricing for the 2N3904 transistor. Some examples include Arrow Electronics, Future Electronics, and Avnet.
When purchasing the 2N3904 transistor, it’s important to ensure that you’re buying from a reputable source. And that the component meets your specific requirements. Make sure to check the specifications and datasheet for the transistor to ensure it will work for your application.
Overall, the 2N3904 transistor is a widely used and versatile component in the electronics industry. Its low cost, high gain, low noise, and wide operating range make it a popular choice for a wide range of electronic circuits. Including amplifiers, switching circuits, and more.
Additionally, several equivalent transistors can be used in place of the 2N3904, providing even more flexibility in circuit design. Whether you’re a hobbyist or a professional, the 2N3904 transistor is a component that is well worth considering for your electronic projects.
Equivalent to a 2N3904 Transistor
There are several equivalent transistors to the 2N3904 that can be used interchangeably in electronic circuits. Here are some of the most common equivalents:
BC547: The BC547 is an NPN transistor with similar characteristics to the 2N3904. Including a maximum collector current of 100mA and a maximum voltage of 45V.
2N2222: The 2N2222 is also an NPN transistor that is similar to the 2N3904. It has a maximum collector current of 600mA and a maximum voltage of 30V.
PN2222A: The PN2222A is a high-gain NPN transistor that can be used as a direct replacement for the 2N3904. It has a maximum collector current of 600mA and a maximum voltage of 40V.
2N3906: The 2N3906 is a complementary PNP transistor that can be used in place of the 2N3904 in certain circuits. It has a maximum collector current of 200mA and a maximum voltage of 40V.
BC549: The BC549 is another NPN transistor that is similar to the 2N3904. It has a maximum collector current of 100mA and a maximum voltage of 30V.
Overall, these equivalent transistors can be used as substitutes for the 2N3904 transistor in many electronic circuits. But it’s always best to consult the datasheet for the specific application. To ensure that the replacement transistor has the necessary characteristics and performance specifications.
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