PCB 101: Different Types of Printed Circuit Boards

Posted on Sept. 18, 2018

Printed Circuit Board (PCB) construction can be carried out in three fundamental ways: multi-layered, double sided, and single side techniques. The following are some of the different types of PCBs:

Single Sided Printed Circuit Boards

Single sided PCBs contain a single base substrate or material layer. The substrate is on one side and is covered with a metal layer made of copper, usually thin. Copper is used mainly because of its excellent electrical conductivity. The PCB contains different electric elements and circuits on the one flank; such a module is useful for simple electronics. Also, beginners usually start by first fabricating and shaping these single-sided PCBs. These boards are much cheaper when massively produced.

Double-sided Printed Circuit Boards

These PCBs are more common than the single sided ones. Both sides of the board are made with metal layers on substrate. Equally, the elements are attached to the two edges. Double-sided PCBs use surface mount and through-hole technology to join the circuits. The latter utilizes feeding wires that are small enough to solder all ends to the appropriate elements. However, the PCBs that exploit the surface mount technique are utterly distinctive from the through-hole boards, as they do not use wires. Instead, they use several small leads to solder straight through the board.

Multilayer Printed Circuit Boards

This kind of PCB expands the complexity and density of the various designs of circuit boards by accumulating additional coatings outside of the bottom and top covers observed in double-sided configurations. Power planes are the main supplementary coatings that are utilized for this PCB's design. The power planes lower electromagnetic interference levels from the emissions of the model, and they supply power to the circuits.

Rigid Printed Circuit Boards

This PCB contains various sides and multiple numbers of coats. They can also exist in shifting rigidities. Most users of this board prefer it in situations when they duplicate a circuit board. Equally, rigid PCBs utilize the materials containing rigid substrates, such as fiberglass residues from the twisting of the board. A common example of a rigid PCB is a computer's motherboard.

Flexible Printed Circuit Boards

Flex PCBs contain flexible plastic substrates that allow the board to mount and bend into various arrangements. They also enable easy shifting without destroying the circuits during use of the PCB. Additionally, flexible printed circuit boards can restore bulky or heavy cabling in more exceptional gears, such as satellites, that are impacted by space and weight.

Rigid-Flex Printed Circuit Boards

These PCBs combine technologies from both rigid and flexible circuit boards. Usually, they contain rigid circuit boards that then join flex circuit boards. If there are requests by the customer, then these boards can be more involved.

Copyright © 2019 Royal Flex Circuits