PCB News - what is the standard pcb thickness？

what is the standard pcb thickness?As the conductor of PCB, copper foil is easy to adhere to the insulating layer and form a circuit pattern after corrosion. Today, the editor of PCB factory will introduce some knowledge of PCB like copper thickness.

What is the general thickness of PCB copper?

The thickness of the copper foil is expressed in oz (ounces), 1oz=1.4mil, and the average thickness of the copper foil is expressed in weight per unit area. The formula is: 1oz=28.35g/ FT2 (FT2 is square feet, 1 square foot=0.09290304㎡ ).

The common thicknesses of international PCB copper foil are: 17.5um, 35um, 50um, 70um. Generally, customers do not have special remarks when making PCB. The copper thickness of single-sided and double-sided is generally 35um, that is, 1A copper. Of course, some of the more special circuit boards will use 3OZ, 4OZ, 5OZ...8OZ, etc, and choose the appropriate copper thickness according to the product requirements.

Generally, the copper thickness of single and double-sided PCB boards is about 35um, and the other copper thickness is 50um and 70um. The copper thickness of the surface layer of the multilayer board is generally 35um, and the copper thickness of the inner layer is 17.5um. The use of PCB copper thickness mainly depends on the use of the PCB and the size of the signal voltage and current. 70% of the circuit boards use a copper foil thickness of 3535um. Of course, for circuit boards with excessive current, the copper thickness will also be 70um, 105um, 140um (rarely), etc.

For different purposes, the thickness of the copper skin is also different, the ordinary 0.5oz, 1oz, 2oz, mostly used in consumer and communication products. Thick copper products above 3oz are mostly used for high currents,such as high voltage products, and power boards!

PCB boards are used for different purposes, and the copper thickness used is also different. For general consumer and communication products, 0.5oz, 1oz, and 2oz copper thickness are used; for most high-current products, such as high-voltage products, power boards and other products, thick copper products above 3oz are generally used.

The above is the relevant knowledge of PCB copper thickness, I hope it will be helpful to you.

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