Online pcb design and manufacturer Tricks to Design PCB2021-11-17
How to understand online pcb design?
What is printed circuit?
Online pcb design and manufacturer, printed circuit boards or PCB (Printed Circuit Board) is a circuit board insulation material, common in the method for forming the power lines above it. Connect electronic components together.
A complete circuit board will include: PCB and components. They are connected to each other through soldering. That board can be connected to other terminals, or power through wires and jacks, hubs, etc.
The role of online pcb design and manufacturer in life
We see printed circuits in all current electronic devices from compact electric lights, leds, to smart devices such as phones, computers, etc. As the industry develops, electronic circuits become more and more compact, meeting higher requirements.
While the world trend is gradually shifting from conventional electronic products to smart products that can connect to the Internet (IOT), the Online pcb design and manufacturer is an important factor in parallel development. with programming, specifically embedded programming.
Types of printed circuits and manufacturing methods
There are 8 types of printed circuits we most often encounter including:
As the most common type, usually with 1 or 2 layers, low cost, medium stability. Commonly found in civil appliances such as led lights, radios.
Or printed circuit Glass chip, with high density of glass fiber, makes printed circuit extremely difficult to break, good insulation ability. Currently being common very widely to gradually replace FR4 in embedded products, more advanced products
Online pcb design and manufacturer accuracy of the signal is very high
Printed circuits have high density, often found in small or integrated devices such as computers, phones, smart watches. These types of printed circuits usually have more than 2 layers to 6, 10 layers. Helps to reduce the size of the circuit, reduce the voltage loss. So, the accuracy of the signal is very high.
Printed circuit can be bent, printed circuit soft is a technology that is not too new, but recently applied to many products. Commonly seen as LCDs, monitors, or bendable devices. The printed circuit has a metal base, which can be found in decorative aluminum led bars, led tube lights.
Printed circuit for high frequency circuits
Printed circuit for high frequency circuits, commonly found in radio transmitters, radio waves. also have a thick copper layer, often common in power circuits, circuits with large current consumption. circuit has a ceramic background, to be honest, I have never seen it.
How to make printed circuits is also very much, in this article I will not talk too much. You can see more here
What is printed circuit design?
Online pcb design and manufacturer is about developing specific device requirements into schematics, then arranging components and drawing lines to connect them. Printed circuit design work usually divides into 2 phases:
Principle circuit design: It is important to have a certain understanding of electronic circuits and electronic components, from specific problems, select components and draw schematic diagrams. The schematic diagram directly affects the correctness of the circuit, an incorrect circuit is unusable.
The non-standard PCB design will lead to noisy circuits
Designing printed circuits: Requires 1 knowledge of wiring rules, calculating the length and width of conductors. Know the rules when layout. In general, this step is quite simple but takes a lot of time for newbies. The non-standard PCB Online pcb design and manufacturer will lead to noisy circuits, not enough capacity, ….
In contrast to the four-layer structure, this structure designs to accommodate the RF signal layers on the bottom layer with an immediate reference layer of Layer 5 ground. Layer 3-4 is common to place the tracks for low frequency signals with the reference layers Layer 2 and Layer 5.
An example of an eight-layer structure
In this structure, high-frequency signals are transmitted in the top layer of Top Layer 1, the reference layer for them is the ground layer 2. You can also see that layer 3 has the same ground layer, and the same reference layer.
If this structure is going to have conductive traces on Layer 3, you will definitely need capacitors to communicate between the power and ground layers.
You can also use Layer 6 if you need to route high frequency signals where impedance control is critical. There will be less EMI problems with this layer because it shields between the two ground layers.
Documenting your layer structure
After you have defined and placed the layers in the structure, you should worry about preparing the manufacturer documentation. This is an important step because a lot of scrap in the PCB manufacturing process is due to misplaced layers.
In addition to simply creating Gerber standard files for each layer in your Online pcb design and manufacturer, there are several strategies to help make your layer stack documentation more understandable to the fabricator. Let’s list them.
online pcb design and manufacturer Adding a README File
The PCB design software places each layer of the PCB in a separate file. You need to define how these layers will be arranged in the finished layer structure. To do this, simply add a README file and tell the PCB manufacturer the order of the layers. And the names of their respective data files, for example, as shown below:
Applying a layer number directly to its surface
In PCB Online pcb design and manufacturer software, we also recommend placing the layer number directly on the surface of the conductive layer. This layer number designation will be readily visible to the PCB manufacturer. Viewing the profile of the PCB drawings in the application is also important
Applying a layer number directly to its surface
Adding an Index Bar to a Copper Layer
While numbered layers are useful, the numbers do not fully describe the physical arrangement of the layer stack. To solve this problem, you can add what calls a “stacking stripe” to the edge of each layer of the PCB.
To do this, locate the first layer of the PCB. And add a 200 mil x 50 mil border so that it protrudes from the edge of the first layer. Then repeat this process for each subsequent layer, shifting the stripe on each layer by 200-250 mil.
Conclusion Online pcb design
In the end, you will end up with a set of ladder-style index strips that will show you if the PCB layers are in the correct order. This will help a quick visual inspection for quality control purposes and will also enable the PCB manufacturer to immediately assemble the PCB layers correctly into a single PCB.