Double layer PCB

The gateway to higher technology applications are the circuits that are called double sided PCBs. This printed circuit boards are also known as double sided or double side plated thru circuits. For closer routing traces, they allow the alternating top and bottom layer procedure using visa. In today’s time the double layer printed circuit boards are quite famous and most often used in almost all technology related industries.

As the double layer or double sided printed circuit boards have twice the area for the conductor pattern in comparison to the single layer printed circuit boards, they are far better suited for the complex electronic circuits. These PCBs have conductors on both sides of the board and thus having two different conductor’s pattern will need an electrical connection between both the layers.

Difference between double layer PCBs and other PCBs:

The double layer PCBs and single layer PCBs are almost similar in designing and manufacturing. The difference is that the single layer printed circuit board has a copper on only single side of the board, whereas the double sided has on both side. The single sided PCB will not have a copper plate in the drilled holes.

Any circuit board that has more than two layers is known multi-layer printed circuit boards.

The base of manufacturing PCBs is the rigid fiberglass lamination, which is the raw material used as the foundation of the PCB. There are many types of printed circuit board materials used while the manufacturing process is going on. In order to meet the electrical temperature and other properties while manufacturing the PCBs the designer chooses which material is suitable for the particular circuit board. The standard material used is the fiberglass, which is often referred as FR4.

The design of a double layer printed circuit board is shown below :-


Advantages of Double Sided PCBs are given below:

  • Higher flexibility for designers : As the double layer PCBs are easy to manufacture and the materials used as the base can be chose by the designers, it becomes very flexible for the manufacturers to design the PCB.
  • Higher circuit density :The density of the circuit is very high which helps to gives a much denser construction on a board by the capacity to mount smaller components in closer proximity; this will result in shorter paths between components.
  • Comparatively lower costs: The double layer PCBs have very less price.
  • Intermediate level of circuit complexity :They are far better suited for the complex electronic circuits.
  • Smaller board size: The board size is small with large number of components mounting capacity.

Applications of Double Sided PCBs

There are multiple applications for old and new designs of the double layer PCBs. The DSPT application requirements include fine line surface mount, ultra-high copper build, high and low temperature, solder coated, silver, and gold finishes, and many more.

The following are industries in which Double Sided PCBs are used:

  • Industrial controls
  • Power supplies
  • Converters
  • Control relays
  • Instrumentation
  • Regulators
  • UPS systems
  • Power conversion
  • HVAC
  • LED lighting