About thick copper PCB thickness

About PCB copper foil thickness
 Copper foil thickness refers to the thickness of the copper foil that covers the plate.
 1.PCB board national standard copper skin thickness is mainly 35um; 50um; 70UM thick copper PCB
 2., copper thickness of 150um for the PCB plate, manufacturers are basically using plating treatment, the process is difficult, the general manufacturers are reluctant to make, and the cost of ultra expensive, not suitable for mass production
 Recommendation: for the module of super power supply, if not the whole board needs 150um, we can consider adding tin by hand or adding copper core wire in parallel. This process is easy to operate and can be produced in large quantities.
 Circuit board thickness
 Circuit board thickness

 Talking about the thickness of PCB
 The thickness of a printed circuit board (PCB) refers to the thickness of the finished board. It shall be determined according to the function of the printed circuit board and the weight, size and mechanical load of the installed device and the specifications of the printed circuit board.
 The nominal thickness of CCL is 0.5, 0.7, 0.8, 1, 1.2, 1.5, 1.6, 2, 2.4, 3.2, and 6.4 mm. The nominal thickness of 0.7 and 1.5 mm paper base copper clad laminate and 0.5 and 1.5 mm glass cloth laminate for printed plug. The thickness tolerance of the printed plug area is very important, it will affect the reliable contact with the socket, so it must match the chosen socket. thick copper PCB
 1.5 mm thick printed boards are widely used in all kinds of electronic instruments and equipment. Because the thickness of the printed board is enough to support the weight of integrated circuits, medium and small power transistors and general resistance devices. Even if the printed board area is large to 500 x 500 mm, there is no problem. A large number of sockets are used in conjunction with this thickness of printed boards. thick copper PCB
 The printed board thickness of power supply should be thicker, because it needs to support heavier transformer, high-power device and so on. It can be used 2.0~3.0 mm thick. As for some small electronic products, such as electronic watches, calculators, etc., there is no need to choose such a thick sheet of material, 0.5 millimeters or thinner is enough. The thickness of a multilayer printed board is related to the number of plies, and the thickness of a multilayer board between 8 and 8 layers can be limited to about 1.5 millimeters. More than 8 layers should be more than 1.5 millimeters thick. The thickness of each layer of the circuit board is often determined by the electrical design.
 PCB thickness specification
 According to GB/T 4722, the thickness of PCB has the following series:
 Fine deviation of thickness deviation 0.5 /
 +/-0.070.7 +/-0.15 +/-0.090.8
 +/-0.15 +/-0.091.0 +/-0.17
 +/-0.111.2 +/-0.18 +/-0.121.5
 +/-0.20 +/-0.141.6 +/-0.20
 +/-0.142.0 +/-0.23 +/-0.152.4
 +/-0.25 +/-0.183.2 +/-0.30
 +/-0.206.4 +/-0.55 +/-0.30