How to choose pcb material

How to choose PCB Material

As a PCB engineer, you know there are many ways to get your designs onto a printed circuit board (PCB). You have to consider the size of your design, where it will be used, and what it will be used for. When choosing the right PCB material for your project, there are many factors to consider.

1. Do you need a flexible PCB or rigid PCB?

If you are designing a prototype board for your next IoT device, and need a flexible PCB, then you should know that there are two main types of flexibility: soft and hard. Hard flex boards have been around for decades and can withstand high temperatures or repeated bending. Soft flex is the latest thing to hit the market in this sector. It’s made with an organic material called PEN (Polyethylene Naphthalate), which makes it more flexible than its predecessors but also less durable. If you don’t have any special requirements, we recommend using hard flex boards if possible because they tend to last longer than soft ones.

2. What surface finish do you need?

  • What surface finish do you need?

The surface finish of a printed circuit board (PCB) plays a major role in its performance. If a PCB’s surface is rough, it will not be able to react well with other components or be soldered easily. On the other hand, if the PCB’s surface is smooth and shiny, it may suffer from poor thermal resistance or become more susceptible to electrostatic discharge (ESD). To determine what type of PCB material is right for your project, it’s important that you first understand how each material behaves differently before choosing one over another.

3. Special materials for special applications

As mentioned earlier, PCB material is a key factor in the success of your product. The PCB material you choose will play an important role in how well your circuit board performs and how long it lasts.

A wide range of applications rely on PCBs for their function. For example, they can be used in medical devices such as pacemakers or insulin pumps to transmit electrical signals from the body to monitoring units outside the body; they are also used in consumer electronics like DVD players or computer monitors; industrial gauges measure pressure on oil pipelines; avionics systems control aircraft navigation instruments; and many more. Because there are so many different uses for PCBs—and because these uses differ from industry to industry—their properties must also vary significantly depending on what needs must be met by each application.

4. What processing window do you require?

The processing window is the range of tolerances that can be expected when your board is processed. For example, if you’re using FR-4 material and want to make boards with a thickness of 0.8 mm and a height of 100 mm, then the maximum thickness would be 1.2 mm for your best results; this means that the minimum thickness could be as low as 0.5 mm.

Other factors that determine the processing window include:

  • Material type (FR-4 or other)
  • Board size (maximum width and length)

5. Does your design require special coatings such as solder resist, conformal coating and other surface treatments?

Does your design require special coatings such as solder resist, conformal coating and other surface treatments?

PCB thickness can be selected to affect the board’s thermal performance, electrical performance, mechanical performance and electromagnetic compatibility. The PCB thickness is limited by the minimum acceptable thermal expansion of the material used in manufacturing the printed circuit boards (choose pcb material). The minimum acceptable thermal expansion range depends on several factors including: type of conductor; base material properties; method of electrical connection between conductors; process temperature range during fabrication/assembly etc., which are all related with one another but not necessarily equal in magnitude or importance.

The minimum acceptable thermal expansion for copper-clad FR4 boards is approximately 10-15%. This means that if you choose an FR4 based PCB with a metalized backside contact layer then you will need at least 500 microns more space between layers than if using bare metal without any additional insulation between them!

No matter how big or small your company, you can find the right pcb material for your next project.

PCB, or printed circuit board material, is what you use to create the electrical pathways that allow devices to function. PCBs are a crucial part of electronics and are used in every industry from consumer electronics to automobiles and heavy machinery.

There are many types of PCB materials available on the market today, which can make it difficult for businesses looking for new products or companies that want to update their existing infrastructure with better materials. However, no matter how big or small your company is, there’s no reason why you can’t find the right type of pcb material for your next project.


PCB manufacturers will be able to help you find the right material for your next project. They can also provide more information on the different types of pcb materials and finishes available.

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