The Differences Between Single and Multi Layer PCBs

There’s no denying that circuit boards are important parts of many products. One study found that printed circuit boards represent, on average, about 31% of a product’s cost. Therefore, it’s important to learn which type of PCB you should be using. Before making this decision it’s a good idea to learn about single, double, and multi layer PCBs. Here is how to determine which type of PCB is right for your project.

  • Single Layer

    This type of PCB contains one layer. This layer involves a combination of substrate, a conductive layer, and a protective coating. In most cases, this conductive layer will be made from copper. Companies might prefer these types of PCBs for their low cost. This type of PCB also works well for companies needing large volumes of boards right away. Being that this type of board features one layer, it does have certain design limitations.
  • Double Layer

    Many companies create products featuring double layer printed circuit boards. Like single layer boards, double sided PCBs all feature a single substrate layer. That being said, double layer boards feature metal on both sides. These types of boards connect with items on the other layer through a few methods. These methods include through hole connections or surface mounts. Through holes are actual openings in the board. In turn, wires are placed through these holes before being soldering begins. Instead of being fed through openings, surface mounts involve soldering wires directly to boards. Double layer printed circuit boards allow companies to utilize more complex product designs.
  • Multi Layer

    When two layers aren’t enough, companies will need to utilize multi layer printed circuit boards. With this type of board, your design options are almost limitless. However, many companies find it easier to use between four to 12 layers for their designs. Also, experts recommend using even layers for your product’s printed circuit boards. This tends to result in fewer problems while these boards are in the manufacturing stage. However, these boards will tend to cost more than those with fewer layers.

In conclusion, it’s wise to learn about the difference that layers make in regards to PCB manufacturing. Before receiving these products, you’ll need to work with a PCB assembly company. This means you’ll need to choose a company that provides excellent PCB assembly services. Considering that, many companies partner with PCB assembly services that utilize machine placement. Research shows that certain PCB assembly services can maintain a 5 day turnaround time, 75% faster than the industry average. Also, a single automatic line can place and solder components faster and with more consistency than a group of hand solder operators. Therefore, you’ll want to find PCB assembly services assembling boards with the help of machines.