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8 Layers PCB

8-layer laminated PCB

Line Width : 5MIL ;

Line Spacing : 5.5MIL ;

Drilling Diameter : =0.4.5mm ;

Surface Technology : Gold deposition, Gold plating, Tin spraying, OSP ;

Processing Size : 400 * 900mm ;

Plate Thickness : 5mm ;

Processing Layers : 8 layers.


A. Six-layer PCB

A six-layer PCB is essentially a four-layer board with two additional signal layers added between planes. A standard six-layer PCB stack consists of four wiring layers (two outer and two inner) and two internal planes (one for ground and the other for power).

Six-layer PCB stacks can be arranged in a variety of ways, but the number of power, signal, and ground layers used depends on the application requirements. A standard six-layer PCB stack consists of: top layer - prepreg - internal ground plane - core - internal wiring plane - prepreg - internal wiring plane - core - internal power plane - prepreg - bottom layer.

A) Advantages of Six-layer PCB:

  1. a, Strength - Six-layer PCBs are thicker than their thinner-layer predecessors and are therefore stronger.
  2. b, Compactness - A board of this thickness with six layers has greater technical capacity and hence can consume less width.
  3. c, high capacity - six or more layers of PCB for electronic equipment to provide optimal power, and greatly reduce the possibility of crosstalk and electromagnetic interference.

B) Six-layer PCB Application Products

  1. a, computer - six-layer PCB to help promote the rapid development of personal computers, these computers have become more compact, lighter and faster.
  2. b, data storage - six-layer PCB high-capacity data storage devices in the past decade has become increasingly rich.
  3. c, fire alarm systems - the use of six or more layers of circuit boards, alarm systems in the discovery of real danger at the moment to become more accurate.

8-layer laminated PBC

B. 8-layer multilayer PCB

As the number of layers in a multilayer printed circuit board increases beyond the fourth and sixth layers, more layers of conductive copper and dielectric material are added to the stack.

For example, an eight-layer PCB contains four planar and four signal copper layers: a total of eight joined together by seven rows of dielectric material. The eight-layer stack is sealed at the top and bottom with a dielectric solder mask. Basically, an eight-layer PCB stack is much like a six-layer stack, but with the addition of a pair of copper and prepreg columns.


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