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BC337 Transistor: Pinout, Equivalents, and Applications

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Do you have an electronic circuit project that requires switching loads applications? Then you need the BC337 transistor. So what are the key features of this NPN transistor? Join us as we explore this device at length and its key application in electronic components. 

 

BC337 Transistor Description

 

Illustrating Transistor Parts.

Illustrating Transistor Parts.

 

As mentioned, this is an NPN type of transistor that you'll commonly find in low-power amplifier circuits. It's suitable for a wide range of general-purpose switching circuits, and you can control it via digital circuits such as a microcontroller circuit. 

Also, you can use the 2N2222 transistor instead of a BC337 transistor. 

 

BC337 Transistor Pinout

 

Transistors in a circuit.

Transistors in a circuit.

This NPN amplifier transistor has three pins, like all other transistors. Its pin configuration is as follows. 

  1. Pin 1 is the collector pin via which the collector current enters the transistor. 
  2. Pin 2 acts as the base. It is important in the biasing of the transistor. 
  3. Finally, the transistor kit's  Pin 3 acts as the emitter. Current will leave the transistor via this pin. 

 

BC337 Transistor Equivalent & Complementary

 

A transistor.

A transistor.

 

The complimentary for this load switch transistor is the BC327. In addition, the following transistors belong to the same family of transistors as the BC337. 

  • 2N3904
  • 2N2222
  • BC487
  • 2N7051
  • 2N4404
  • BC338

 

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BC337 Features

 

Transistors. 

Transistors. 

 

  1. It is an NPN transistor with the TO-92 package type
  2. Also, it features a relatively high collector current reaching up to 800mA. 
  3. Thirdly, it has a DC Current Gain of between 100 to 630. 
  4. Its Collector-Emitter Voltage, Emitter-Base Voltage, and Collector-Base Voltage are 45V, 5V, and 50V, respectively. 
  5. Moreover, its Collector Dissipation is 625 W, and has a 100 MHz transition frequency. 
  6. Lastly, the transistor's ideal storage and max operating temperatures are between 55 to +150 Centigrade. 

 

BC337 Advantages

 

A Transistor.

A Transistor.

The upsides of using this package transistor are as follows. 

  1. It features advanced process technology, and its switching speed is also top-notch. 
  2. Also, it guarantees a full-voltage operation, and it's also synonymous with low error voltage.
  3. Lastly, it can perform efficiently even under high power and current. 

 

Where and How to Use BC337

 

An Audio amplifier. 

An Audio amplifier. 

 

One of the outstanding features of this transistor is its suitability for use in a wide range of applications. 

  1. First, it has impressive maximum gain characteristics, making it ideal for low-power audio amplifiers and amplification stages. 
  2. Also, the high gain is suitable for audio preamplifier stages. 
  3. In addition, the transistor is imperative in electronic circuits for switching small loads. 

 

BC337 Applications

 

The transistor is useful in a home-theater amplifier. 

The transistor is useful in a home-theater amplifier. 

 

  1. It is a general-purpose NPN transistor suitable for Audio frequency driver stages.
  2. Secondly, it is essential for general-purpose switching applications and with an output stage amplifier. 
  3. Again, you can use the transistor to amplify low-gain signals to high-gain. 
  4. Lastly, it is also suitable for low-power audio amplifiers. 

 

Summary

 

In a nutshell, this transistor has some remarkable features, such as a max gain, and it's suitable for almost any type of load. You can also use it in power supply applications, and it'll still perform optimally. That's all on this product's details, and hopefully, we've covered all you've been looking for on the NPN amplifier transistor. 

 

 

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Hommer Zhao

Hommer Zhao, based in Shenzhen, China, founded OurPCB in 2005, a PCB Manufacturing company.

As a regular contributor to Circuit World and the Journal of Manufacturing Systems, Hommer shares expertise on advanced PCB fabrication processes. His research on manufacturing optimization appears in the International Journal of Production Research and Journal of Industrial Information Integration.

Serving on the Indian Printed Circuit Association (IPCA) advisory board, Hommer Zhao frequently presents at technical seminars and industry exhibitions. He maintains strong partnerships with leading institutions including UCL's Electronic Engineering Department and their PCB prototyping facilities. Under his leadership, OurPCB has pioneered enhanced PCB manufacturing machining capabilities for high-precision PCB manufacturing, particularly serving telecommunications, automotive, and medical device sectors.

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