High Quality 8 Layer PCB Manufacturing
From household appliances to medical devices, the use of printed circuit boards (PCB) is extensive. All devices use PCBs with distinct layers, designs, and configurations. Among them, 8 layer PCB has become popular for providing numerous benefits to devices of everyday use. So, if you want to know what an 8 layer PCB is, the process of manufacturing a high-quality 8 layer PCB, and other related facts, make sure to read the article till the end.
What is an 8 layer PCB?
As the name implies, an 8 layer PCB is that specific type of printed circuit board that contains not one or two, exactly eight layers in the circuit board. It is one type of multi-layered PCB that is known for delivering considerable routing area for several applications with numerous power isles. The layers of an 8 layer PCB get fixed tightly with durable and mutual relations among all layers. For having a lot more compound arrangement, the stack-ups of an 8 layer PCB efficiently provide a large amount of routing space to the prevailing power isles. In this way, it reinforces the electromagnetic compatibility execution by the upswing of two planes.
A circuit board with 8 layers generally gets used in small and convenient appliances such as digital cameras, cell phones, radios, passive switch boxes, and more. Additionally, it often gets ascended on the motherboard, backplane, etc. For preventing all possible dangers regarding the 8 layer PCB, one must always maintain a direct PCB design. However, an 8 layer PCB is not the commonest one yet; it repeatedly gets used while making several compact devices.
Pattern followed by 8 layer PCB stack-up:
We can notice several types of PCBs like one layer PCB, two-layer PCB, and even multi-layer PCBs with more than two or three layers in a conventional 8 layer PCB stack-up design. As the design of an 8 layer PCB stack-up contains strong and durable two-layer PCB and others, the outcome efficiently covers all requirements.
If you want to create a good 8 layer PCB stack-up, you must pursue the stack-up mentioned below.
- Signal one
- Ground
- Signal two
- Power
- Ground
- Signal three
- Power
- Signal four
Materials used for fabricating an 8 layer PCB:
Using the exact and accurate materials while designing a printed circuit board is an inevitable part of the forthcoming step. When it comes to the materials of an 8 layer PCB, you must be careful enough because these substances are going to determine the outcome and execution of the PCB at the end of the day. Therefore, when you opt for materials for fabricating an 8 layer PCB, you must observe each option with patience and then only select it.
If you want to create a high-quality 8 layer PCB, you can select between these two options.
- Substrates substances
- Conductive substances
Now, let us make it easier for you.
- Substrates materials: It safeguards your PCB from heat and help it to continue to perform at high temperature.
- Conductive materials: Copper, being cheaper than gold and other materials, always works the best as a conductive material.
Advantages of 8 layer PCB stack-ups:
An 8 layer PCB stack-up is known for providing lots of advantages, including high performance, legibility, and more. Therefore, a good 8 layer PCB always works as a substitute for all other components present in a circuit board. So, without further ado, let’s explore the advantages provided by an 8 layer PCB stack-up.
Deduct defenselessness: The main advantage of using an 8 layer PCB is that it deducts the defenselessness or exposure of a tool. In this way, the all-around execution of the device gets boosted automatically. It also helps to safeguard the interior coatings from noises by deducting the exposure from the exterior forces.
Minimize radiation: Electromagnetic interference radiation is a common issue for equipment, especially for high-speed ones. But, when you opt for a multi-layer PCB like 8 layer PCB, the radiation gets diminished eventually. Therefore, the tools don’t face any issues and can easily continue providing high performance.
A cost-effective option: An 8 layer PCB stack-up is always a cost-effective option. Although it costs a bit more than the conventional single-layer or two-layer PCBs, you can use most of it before it gets damaged. So, in short, an 8 layer PCB, unlike other PCBs needs lower supervision and provides a lot more performance than others.
Improve overall performance: Last but knot least, a decent 8 layer PCB always provides a device with long life and improves the overall performance. So, instead of opting for other low-performance PCBs, selecting an 8 layer PCB stack-up is always a good option. On the one hand, it is cost-effective, and on the other, it is reliable and contributes high and efficient execution to the related device. Therefore, once you get your hands on an 8 layer PCB, you can get hassle-free for a while.
Applications of the 8 layer PCB stack-up:
When it comes to the practical application of an 8 layer stack-up, it appears to be widespread. Several compact devices, especially from which we expect long life, reliability, low-maintenance charge, and high performance, must encompass 8 layer PCB inside. So, now, let’s have a look at some commonest applications of an 8 layer PCB.
Medical and healthcare field: Medical and healthcare field uses 8 layer stack-up for making their devices for high performance and long life. The devices used in the medical field should always deliver the exact result as it is related to someone’s life. Therefore, compact machines like x-ray, CT scanners, ultrasound devices, and other medical imagery devices use 8 layer PCB.
Automobile: The automobile industry has immensely improved in the last few years so has the application of the 8 layer stack-up. From impressive dashboards to LED/LCDs, GPS facility, automatic doors, remote locking system, all require a great and considerable configuration for providing good performance. Therefore, the use of 8 layer PCB stack-up has also increased in this industry.
Manufacturing field: The manufacturing industry always deals with a heavy workload hence, it needs high-quality and reliable appliances. Additionally, most manufacturing units are looking for a reliable and accurate PCB that does not need to be conserved or maintained. So, an 8 layer PCB works the best for them.
Others: Some other applications of an 8 layer PCB stack-up include:
- In the chemical processing trade
- Compact devices like digital cameras, cell phones, laptop motherboards, etc.
- Aerospace industry
Factors that determine the cost of an 8 layer PCB stack-up:
As we have discussed before, an 8 layer PCB charges a little more than other conventional PCBs because of multiple services provided by it. But, remember, not all 8 layers PCBs charge the same. The final cost of a PCB only gets decided after assessing some crucial factors. So, let’s have a look at the factors that determine the cost of an 8 layer stack-up.
Board size: Firstly, we have to assess the size of the board on which all components of the PCB get attached. In case the number and volume of the components are large, the board must be bigger as well; otherwise, it will not be possible to assemble all components seamlessly on the board. As a result, the bigger the board gets, the more the cost of the PCB will be.
Viscosity: Like the size of the board, the thickness or density of the board also determines the final price of the 8 layer PCB. If the board contains lots of components, it will automatically get thicker. Similar to the size, if the thickness of the board is too much, the price will increase. On the other hand, if a board is less thick, the price will automatically decrease.
Finish type: When it comes to the final cost of an 8 layer PCB, the finish type plays a significant role. If you use a high-quality finish to your board, the price will increase naturally. But, if you do not, then the price will remain more on the low-end side. Board finishes like Hot Air Solder Levelling, Electroless Nickel Immersion Gold, and Electroless Nickel Electroless Palladium Immersion Gold are some examples of high-end finishes that cost more.
Hole sizes: All PCB boards include holes so that the prevailing components of the board can make conduct with the required conductive layers. While designing an 8 layer PCB, if you need to create lots of holes, the charge will get increased as it demands more work and efficiency.
Customization cost: If you request your PCB service provider for a customized PCB design, then you have to spend extra money on it. In this case, the service provider has to reconstruct, add, or deduct some components from the board to meet your specifications. Therefore, the overall cost will get increased.
Guidelines for a standard 8-Layer PCB stack up:
For creating a durable 8 layer PCB stack-up, one must follow a guideline that encompasses all necessary steps. Here, we’ve noted down a guideline for a standard 8 layer PCB stack-up.
Exact routing path: Before starting the construction of an 8 layer PCB, the first thing you have to keep in mind is to infer the exact routing path. You can avoid crosstalk and other common issues only if you follow the routing path thoroughly.
Ground planes composition: The ground planes play a major role in the entire configuration of a PCB. So, if you do not put the planes in the correct position, they may get damaged and result in unwanted troubles in your device.
Precise return way: As an 8 layer PCB manufacturer, you should always create a tight and exact return way so that it can easily eradicate all unnecessary interaction with other elements.
Vias: Always make sure to use either buried or blind vias while designing an 8 layer PCB. If you do not do so, your PCB may lack room for routing in the right way.
The designing process of an 8 layer PCB stack-up:
Like other PCB stack-ups, the designing method of an 8 layer PCB also begins with planning and then follows the remaining steps. So, if you are an 8 layer PCB manufacturer who wants to create a decent PCB, simply follow these steps.
Take your time and create a plan: Before going for practical designs, the first thing you have to do is to take your time to create a plan. At first, determine which kind of 8 layer PCB you want to make, as well as decide the components, shape, size, and other related things. Now, you can research more and finally make a blueprint of your idea. Now, gather all information, and create a final plan. For this, you can use a blank page on designing software.
Insertion of the elements: Now, when you are done with making a schematic of your 8 layer PCB, it is time to insert the elements. In this step, you have to follow certain layering and formulating restrictions so that the final result will match your requirements. Make sure to stipulate the shape, size, layer numbers, and other crucial information in this step.
Component positioning: Finally, it’s time to place the components using the correct positioning method. In this stage, an 8 layer PCB manufacturer has to use several techniques for placing the components according to the design.
Frequently Asked Questions:
What are some applications of 8 layer PCBs?
The applications of 8 layer PCBs are seen in fields like medical and healthcare, aviation, manufacturing, automotive, chemical processing, etc. This PCB also gets used to create compact tools like digital cameras, cell phones, computer motherboards, radio, and so on.
Which kind of surface finish should I use for an 8 layer PCB?
It will be good to use surface finishes like Hot Air Solder Levelling, Electroless Nickel Immersion Gold, and Electroless Nickel Electroless Palladium Immersion Gold if you want your device to perform adequately for a long time.
What are the factors that determine the cost of an 8 layer PCB?
Factors like the size of the board, thickness, surface finish, holes, etc., determine the final price of an 8 layer PCB.
Conclusion:
It was, in short, a brief description of a high-quality 8 layer PCB stack-up. In recent days, it has become widely famous for providing devices with long shelf-life, top-notch performance, and reliability. So, if you want to get your hands on a high-quality 8 layer PCB, you must get in touch with a promising 8 layer PCB manufacturer who has years of good experience in this field. So, make sure to reach your nearest manufacturer soon.
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