All You Need To Know About Printed Circuit Boards (PCB): Their Composition, Uses And Major Advantages!!

In the simplest form, a printed circuit board (PCB), can be defined as a tool that provides electronic and mechanical connections by routing power and signals through conductive pathways that are primarily etched onto circuit boards. PCBs are self-contained board with various interconnected electronic and electric components found in different devices from pagers to beepers, computer systems, radios, and radars. The circuits are produced by a layer of conducting material deposited on the outside of a substrate which is called an insulating board. The separate components, on the other hand, are located on the surface of the insulating board and are soldered to the connected circuits.

Printed Circuit Boards are mainly designed as:

  • Single sided boards with copper pads and traces on the sides of the board.
  • Double-sided boards with traces on the top and bottom as well as copper pads.
  • Multilayer design boards with copper pads and traces on the bottom and top of the board with different numbers of internal copper layers with various connections and traces.

The Composition of a PCB:

The major components on a PCB are generally electrically connected to the circuits by two methods including the “hole technology” and “surface mount”.

Whole Technology Method – Every component of the PCB consists of various thin leads, which are pressed through holes in the insulating board and then are soldered to connection boards in the circuits on the reverse side.

 Surface Mount Technology Method – L-shaped or J-shaped terminals on each and every component get in touch directly with the printed circuit board. A solder paste that is included consists of glue, flux, and solder and then is applied at the contact point to grip all the components in the right position until the solder is liquefied.

Important uses and applications of a PCB

Printed circuit boards assemblies have their application in almost every electronic device and appliance including:

  • Televisions
  • Computer systems and computer printers
  • Digital clocks
  • Cell phones
  • Home appliances such as microwave oven, refrigerators, and dishwashers.

Besides all these, PCBs are also used in many sectors and industries for a variety of applications such as:

Medical Applications –

For many medical applications, where there is a need to create the smallest package, printed circuit boards are the perfect solution. Examples of medical products that use PCBs assemblies include eye measurement product with receivers and transmitters, hospital inventory control products, scanning machines such as ultrasound machines and CT scanners and so on.

Industrial Applications –

PCBs are also used for high power industrial uses such as motor controllers, high current battery chargers and industrial load testers. Additionally, they are also used for field control technology for water treatment plants and process thickness measurement systems applications.

Aerospace Applications –

In the aerospace applications, PCBs act as the perfect choice for the use in aircraft. They also are used for tight spaces and are an extremely adaptable solution for various applications in the aerospace industries. Examples include transducer power supply applications, robotic cable assemblies, panel instrumentation and so on.

Printed circuit boards are one of the most essential centers of almost every electronic product. These electronic devices come in a wide range of configurations which allow them to offer a variety of facilities and functions.  As electronic devices expand across various fields and industries, the use of PCBs continues to grow into as many new industries and applications. Many people recognize PCB when they actually see them, but, these are mainly small green colored chips at the core of the device.

Some Major Advantages of PCB:

A printed circuit board offers different advantages which makes them the best choice for the manufacture of all types of electronic devices, equipment, and instruments. Here is a list of some of the major benefits to avail by the use of a PCB.

  1. It Provides the Convenience of Repair and Diagnostic –

In case of any electronic product damage, it’s very simple to check and replace the failed components as the electronic device’s polarities are clearly mentioned on the circuit board, making it easier to replace. This allows a great convenience at the time of the installation as well as repair processes.

  1. PCBs save Time –

The traditional method of circuit connections usually takes much time to connect the components, whereas the printed circuit board takes relatively less time in connecting the components as compared to other conventional methods.

There are many more benefits of PCB, however, considering its uses and benefits, it can rightly be said that PCBs are perfect for the workings of each and every electronic device. They are adaptable and flexible solutions for many applications across a wide range of industries. Nonetheless, no matter what type of PCB you need for your company, experienced and qualified PCB manufacturers can easily create an inexpensive and useful PCB solution for any application.

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