6 Layer PCB Manufacturing

With the maturity of 6 layer PCB manufacturing technology, customers are paying more and more attention to the cost of mass 6 layer PCB manufacturing. iPCB Circuits is a 6 layer PCB manufacturer. iPCB Circuits has highly automated, multilayer PCB manufacturing equipment that meets the delivery and quality requirements of 6 layer PCBs produced by customers and further reduces the manufacturing costs of 6 layer PCB prototypes.

4 layer vs 6 layer PCB

6 layer PCB board has higher technical capabilities than 4 layer PCB. The inner layer of 6 layer PCB generally provides power for a variety of electronic equipment, industrial applications, and technical equipment, reducing the chance of electromagnetic interference and crosstalk.

You can find them on your PC and laptop. You can even see that they are used in data storage devices such as hard disks. 6 layer PCB circuit board manufacturing is also used in fire alarm systems to make them more effective.

In addition, you can even see a 6 layer circuit board in health devices such as optical receivers, mobile phone transmissions, GPS devices, industrial control devices, and heart monitors.

A 6 layer printed circuit board is similar in structure to a 4 layer printed circuit board, but it is equipped with two extra rows of dielectric materials and two layers of copper. In this device, the second and fourth rows of dielectric material are magnetic cores. In the six rows of conductive copper, the second and fifth rows are marked as flat, and the other is signals.

6 Layer PCB Motherboard

6 layer PCB stackup

The base of PCB stackup

With the emergence of high-speed circuits, PCB is becoming more and more complex. To avoid the interference of the electrical factory, the signal layer and power layer must be separated, so the design of multi-layer circuits is involved. Before designing a multilayer PCB, the designer first needs to decide whether to use a printed circuit board stackup based on the size of the circuit, the size of the printed circuit board and the requirements of electromagnetic compatibility (EMC), that is, whether to use a 4 layer PCB, a 6 layer PCB or more. This is a simple concept for designing a multilayer board.

After determining the number of layers, determine the position of the layers and how to distribute different signals on them. This is the choice of the multilayer PCB stackup. Stackup is an important factor affecting the EMC performance of PCB. A good 6 layer PCB design, the stack-up design will greatly reduce the impact of electromagnetic interference (EMI) and crosstalk.

The number of layers in a PCB is not as high as it is good or as low as it is good. More factors need to be considered in determining the 6 layer PCB stack-up. In terms of wiring, more layers are more conducive to wiring, but PCB manufacturing costs and difficulties will also increase. For PCB manufacturers, whether 6 layers PCB stack up is symmetrical or not is the focus of attention in PCB manufacturing. Therefore, the choice of the number of layers needs to take into account all aspects of the needs to achieve the best balance.

For experienced designers, after the component pre-layout is completed, the PCB wiring bottleneck will be focused on analysis, then the number and type of signal lines with special wiring requirements (such as differential lines, sensitive signal lines, etc.) will be combined to determine the number of layers of signal layers, and then the number of layers of internal power layers will be determined according to the type of power supply, isolation, and anti-interference requirements. In this way, the layers of the whole circuit board are basically determined.

Typical 6 layer PCB stackup

After determining the number of layers of the circuit board, the next work is to arrange the layers circuit placement order reasonably. The following figure is a standard 6 layer PCB stackup.

6 layer PCB stackup

How to stackup? Which stackup is better? Generally follow the following basic principles.

1. The component surface and welding surface are shielded by a complete ground plane.

2. There are no adjacent parallel wiring layers as much as possible.

3. All signal layers are as adjacent to the ground plane as possible.

4. The key signal is adjacent to the stratum and does not cross the divided area.

Operating the stackup manager

1. Right-click the mouse and execute the "Insert layer above" or "Insert layer below" command, you can add layers, and you can add positive or negative films; execute the "Move layer up" or "Move layer down" command, you can add layers. The order of layers is adjusted.

2. Double-click the corresponding name, you can change the name. Generally, it can be changed to TOP, GND02, SIN03, SIN04, PWR05, BOTTOM, that is, "letter + layer number Altium Designer 19 comes with this function. ", so it is easy to read identify.

3. Set the layer thickness according to the stackup structure.

5. In order to meet the designed 20H, the shrinkage of the negative layer can be set.

6. Click the "OK" button to complete the stackup setup. The stackup effect of a 6-layer circuit board.

It is suggested that the signal layer should be processed as a positive film, and the power and ground layers should be processed as a negative film, which can greatly reduce the size of the file data and improve the design speed.

6 layer PCB design

How to do a 6 layer PCB design? After all, the final design needs to be submitted to the PCB manufacturer. If the 6 layer PCB manufacturing cannot be completed, the design is wasted.

6 layer PCB design guidelines:

1. There is a complete ground plane (shielding) under the component surface and welding surface;

2. Try to avoid two signal layers directly adjacent to each other;

3. All signal layers should be adjacent to the ground plane as much as possible;

4. The key signal wiring layers such as high frequency, high speed and clock should have an adjacent ground plane.

How to choose a 6 layer PCB manufacturer.

iPCB circuit company is a China 6 layer PCB manufacturer, we provide cheap 6 layer PCB. If you need 6 layer PCB, please contact us. We have a complete 6 layer PCB manufacturing process, providing you with the most cost-effective 6 layer PCB cost.