A printed circuit board (PCB) is a flat plate or base of insulating materials that contains a pattern of conducting material and components, and some projects can be quite complex. But all PCBs have to start somewhere — and that’s with design.
Why are PCB design basics so important? Multiple extensive revisions can seriously delay the completion of your project — costing you time and money. It’s important to work with engineering experts from the beginning so that you can design for manufacturability and ensure a final, cost-effective product that works efficiently and effectively.
From the initial drawings to the final files, here are the 9 steps toward designing a printed circuit board:
1. Understand the electrical parameters.
Before starting a PCB design, you should know and understand the electrical parameters of the system, including:
2. Creating the schematic.
One of the first steps is always creating a schematic, which refers to the design at the electrical level of the board’s purpose and function. At this point, it’s not yet a mechanical representation.
3. Use a schematic capture tool to create your PCB layout.
The right PCB provider will work with principal engineers to develop a schematic with a software platform such as Mentor PADS®, Allegro, or Altium, which shows you exactly how your board will operate and where the components will be placed. After you create your schematic, the mechanical engineer will load the design and determine how it will fit in the intended device.
4. Design your PCB stackup.
This is important to consider early on in the PCB design stage due to impedance, which refers to how much and how quickly electricity can travel down a trace. The stackup plays a role in how the mechanical engineer can design and fit the PCB into the device.
5. Define design rules and requirements.
This step is largely dictated by standards and acceptability criteria from the IPC, which is the industry association for PCB and electronics manufacturing. These standards tell you everything you need to know regarding PCB manufacturing. An important tip: Find a PCB layout provider who is extremely familiar with IPC standards; this can help you avoid major revisions and project delays.
6. Place your components.
In many cases, the customer and PCB provider will discuss design and layout guidelines when it comes to the placement of components. For example, there may be standards indicating that certain components cannot be placed near others because they create electrical noise in the circuit. The PCB provider will have data sheets on every component (in most cases these are connectors), which will then be placed in the mechanical layout and sent to the customer for approval.
7. Insert drill holes.
This step is driven by the components and a connection. About half of the flex circuits on the market are double-sided, which means they have connection to the drill hole on the bottom layer.
8. Route the traces.
After you’ve placed the components and drill holes, you’re ready to route the traces, which means connecting segments of the path.
9. Add labels and identifiers.
Now is the time to add any labels, identifiers, markings, or reference designators to the layout. Reference designators are helpful in showing where specific components will go on the board.
10. Generate design/layout files.
This is the final step in the layout process. These files contain all the information pertaining to your printed circuit board, and once they have been generated, your PCB is now ready for fabrication and manufacturing and assembly.
1. PCB fabrication.
2. Turnkey PCBA: PCB+components sourcing+SMD and through-hole assembly
Global Well Electronic Inc. is a professional PCB solution supplier from Shenzhen, China, integrating PCB circuit board production and processing, STM processing and mounting, PCBA OEM, component purchasing, PCB/PCBA custom design-production- A comprehensive PCB circuit board company with one-stop turnkey service of processing-assembly-finished products. The company has a strong supply chain system, a professional and efficient collaborative team, a sound and complete quality control system, and the business philosophy of honesty and trustworthiness, customer first, and presents the products to everyone with low prices, reliable quality, high-quality service and after-sales service. client.
We provide total PCB solutions from PCB design to final mass production, including PCB fabrication and assembly, component sourcing, solder paste stencils, conformal coatings, and more. Serving the global electronics field, including industrial control, medical electronics, military equipment, power communication, automotive electronics, AI artificial intelligence, smart home and other industries.
Our factory located in Shenzhen, and have almost 300
employees, more than 30 production lines include SMT, DIP, automatic welding, aging test and assembly. We have SMT machines from Japan and Korea, automatic solder paste printing machines, solder paste inspection machine(SPI)12 temperature zone reflow soldering machine, AOI detector, X-RAY detector, wave soldering machine, EM PCB ,dispenser,laser print machine etc., Different line configurations can meet requirements from small sample order to bulk shipment.
Our company has obtained ISO 9001 quality system certification and ISO 14001 system certification. With multi-testingprocedures, our products carry out the quality system standard strictly.
|Order Quantity||1-300,000,30000 Square Meter/Square Meters per Month module electronic board|
|Layer||1,2,4,6,upto 24 layer|
|Material||FR-4,glass epoxy,FR4 High Tg,Rohs compliant,Aluminum,Rogers,etc|
|Shape||Any shape: Rectangular,round,slots,cutouts,complex,irregular|
|Max PCB dimensions||20inch*20inch or 500mm*500mm|
|Thickness||0.2~4.0mm, Flex 0.01~0.25''|
|Thickness tolerance||± 10%|
|Copper thickness||0.5-4 oz|
|Copper thickness tolerance||± 0.25oz|
|Surface finish||HASL,Nickle,Imm Gold,Imm Tin,Imm Silver,OSP etc|
|Solder mask||Green, red,white,yellow,blue,black, Double-sided|
|Silk screen||White,yellow,black,or negative, Double-sided or single-sided|
|Silk screen min line width||0.006'' or 0.15mm|
|Min drill hole diameter||0.01'',0.25mm.or 10 mil|
|Min trace/gap||0.075mm or 3mil|
|Turnkey PCBA||PCB+components sourcing+assembly+package|
|Assembly details||SMT and Thru-hole, ISO lines|
|Lead Time||Prototype: 15 work days. Mass order: 20~25 work days|
|Testing on products||Flying Probe Test, X-ray Inspection, AOI Test, functional test|
|Quantity||Min quantity: 1pcs. Prototype, small order, mass order, all OK|
|Files we need||PCB: Gerber files(CAM, PCB, PCBDOC)|
|Components: Bill of Materials(BOM list)|
|Assembly: Pick-N-Place file|
|PCB panel Size||Min size: 0.25*0.25 inches(6*6mm)|
|Max size: 20*20 inches(500*500mm)|
|PCB Solder Type||Water Soluble Solder Paste, RoHS lead free|
|Components details||Passive Down to 0201 size|
|BGA and VFBGA|
|Leadless Chip Carriers/CSP|
|Double-sided SMT Assembly|
|Fine Pitch to 0.8mils|
|BGA Repair and Reball|
|Part Removal and Replacement|
|Component package||Cut Tape,Tube,Reels,Loose Parts|
Soldering-----Assembling-----ICT-----Function Testing-----Temperature - Humidity Testing
PCBA are packed into plastic bags. Plastic bags are put into small carton. 4 small carton into a big carton.
A big carton: 35×32×40 cm size.
FedEx, DHL, UPS, TNT, EMS, private lines, etc.
Air freight, Sea shipping
If you need help on PCB layout, you can contact us and send the board to us. We also provide Reverse Engineering Service.
We have been providing PCB Manufacture for many years in China,and we have rich experience in product production and product assembly.We believe our team will provide high quality and low cost service for you.
Thank you very much for all your support .
1. Gerber files of the bare PCB board
2. BOM (Bill of material) for assembly (please kindly advise us if there is any acceptablecomponents substitution.)
3. Testing Guide & Test Fixtures if necessary
4. Programming files & Programming tool if necessary
5. Schematic if necessary
A: Gerber or Eagle, BOM listing, PNP and Components Position
A: Yes, we can custom you sample to test before mass production
A: Within 6 hours for PCB quotation and around 24 hours for PCBA quotation.
A: 7-10 days for PCB production and components purchasing, and 10 days for PCB assembly and Testing