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Does PCB thickness matter?
When I heard the word "standard", I thought of the benchmark that should be used to judge all other similar things. For example, Cadillac has long been regarded as the gold standard in automobiles. For many people, it still is. Now, standard can also refer to standard size. For example, the standard width of a sofa that can accommodate three people is 84 inches or 8 feet. When referring to product size, the standard may be very important because it may have attributes or functions that must be met.
For circuit boards, thickness is a very important criterion. Therefore, even if there is no single "official" standard, there are some common and preferred sizes. In some cases, your contract manufacturer (CM) may recommend that you comply with one of the following standards in order to tailor the functionality of your design equipment, custom pcb cost fabrication and/or Quick Turn PCB. Let us first look at the standard PCB thickness, and then discuss the issues that should be considered before choosing a non-standard or custom PCB thickness.
What is the standard PCB thickness?
Many contract manufacturers may say that the standard PCB thickness is 1.57 mm, or about 0.062 inches. This is correct to a certain extent. Obviously, this is the size of the bakelite board manufactured in the early stage of circuit board manufacturing, and the size has been fixed. Therefore, we can call it the historical standard PCB thickness. Today, the size of circuit boards is larger or smaller than this standard, but this standard may still be the most common thickness in design.
Nowadays, it is more accurate to say that there are a series of common or standard PCB thicknesses. These include 0.031 inches (0.78 mm), 0.062 inches (1.57 mm) and 0.093 inches (2.36 mm). Depending on your PCB manufacturing options and assembly services, you may be able to manufacture circuit boards with other thicknesses. When determining PCB thickness, many of the following design and manufacturing factors need to be considered.
Design factors affecting PCB thickness
Copper thickness (heavy copper pcb)
Sheet
Quantity PCB layer
Signal type (Microwave radio frequency board)
Through-Hole Assembly (Through-Hole Assembly)
Operating environment
Manufacturing factors affecting PCB thickness
Drilling equipment
Copper thickness
Number of layers (0-18Layer FR4 board)
De-panelization method