Those information you don’t know about PCB Substrate Thickness

The thickness of the PCB refers to the thickness of the board after it is completed. It should be based on the function of the printed circuit board and the weight of the mounted devices, the external dimensions and the mechanical loads to be Mechanical loads borne, and the specifications of the printed socket.

In general, the PCB board thickness is commonly 1.6mm, this size can meet the needs of most applications but also has good stability and reliability.

PCB board thickness can vary according to specific applications and design needs, in general, the common PCB board thickness is 0.8mm, 1.0mm, 1.2mm, 1.6mm, and 2.0mm. These sizes are the most commonly used standard thickness options and are suitable for most electronic devices and application scenarios.

However, other non-standard thickness options are available for specific applications, such as 0.4mm, 0.6mm, 2.4mm, etc. These non-standard thicknesses are usually used for applications with special requirements, such as ultra-thin devices, high-density integrated circuits, flexible circuit boards, and so on. Therefore, the selection of PCB thickness needs to take into account factors such as design requirements, circuit complexity, mechanical support needs, and manufacturing processes to ensure that the desired functionality and performance requirements are met.

1.5 mm thick printed circuit boards are widely used in various types of electronic instruments and equipment. Because this thickness of the printed board is sufficient to support integrated circuits, medium, low power transistors, and general resistive components. Even if the printed board area is as large as 500 × 500 mm, there is no problem, a large number of sockets are A large number of sockets are used with boards of this thickness. pcb substrate thickness

Power supply with the thickness of the printed circuit board to be thicker, because it has to support the heavier transformers, high-power devices, generally available 2.0-3.0 mm thick. The thickness is generally 2.0-3.0 millimeters. As for some small electronic products, such as electronic watches, calculators, etc. There is no need to choose such a thick plate, 0.5 millimeters or some thinner is enough. The thickness of the multilayer printed circuit board and its layers, 8 layers or 8 layers of multilayer boards can be limited to the thickness of about 1.5 millimeters.

The thickness of more than 8 layers should exceed 1.5 mm. The thickness of the multilayer board between each circuit layer is often also determined by the electrical design.
A standard thickness of 1.6 mm (0.063 inches) is available on the market. Sometimes, the thickness of the board’s core layers and the alignment impedance of the solder mask coating must be considered. When calculating impedance, the consequences of conformal coating must be considered because the board is usually covered in a solder mask layer. In general, the solder mask reduces impedance on thin traces. As the trace thickness increases, the effect of the solder mask is much less.

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