Lesson-2: Introduction to Types of PCB

Types of PCBs

There are three types of PCBs

1. Single-sided PCB

2. Double-sided PCB

3. Multilayer PCB

Let us discuss one by one.

1. Single-sided PCB:

A single-sided PCB is the most basic type of printed circuit board. It consists of only one conductive copper layer above the substrate. The electrical components are soldered or mounted onto one side of the board and the entire etched circuit can be seen on the other side of the board.

Key Features of Single-Sided PCB

• It is cost-effective and suitable for a high volume of orders

• Suitable for Low-Density Designs

• Easy to manufacturer

• Easy to design

• Easy to repair in case something goes wrong

Single-sided PCBs are used for simple and low-cost electrical/electronic devices like:

• Calculators

• Power supplies

• LED Lighting boards

• FM Radios

• Timing Circuits etc.

2. Double-sided PCB

It is also known as a two-layer PCB they have two-sided traces with a top and bottom layer. These boards can mount conductive copper and components on both sides of the circuit board, which allows the traces to cross over each other through the small hole-like structure called via.

3. Multilayer PCB

It is a circuit board that has more than two layers. All multilayer PCBs must have at least three layers of conductive material which are buried in the center of the material.

• Higher assembly density

• Smaller size (considerable savings on space)

• Increased flexibility

• reduces overall weight

4. Applications of Multilayer PCBs

• GPS(Global Positioning System) technology.

• Industrial controls

• Satellite systems

• X-ray equipment

• Heart monitors

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