PCB Fabrication Service

PCBs act as the fundamental structure of innumerable gadgets we depend on in our daily lives. From our trusty smartphones and laptops to essential medical apparatus and complex automotive systems, PCBs perform an indispensable duty by linking and energizing electronic parts. However, concealed beneath the flawless operation of these boards lies a captivating expedition of PCB production, where raw materials undergo a metamorphosis into elaborately crafted circuitry.
 
FC offers High-Mix-Low volume, Prototype, and Mass production PCB fabrication services, for rigid, flexible, and High-Density boards to support your projects.

FC-Top PCB Manufacturer in China

At FC, we offer a fast and cost-effective PCB manufacturing service for global customers. With our advanced technology, we have successfully assisted many customers in, solving common design challenges and facilitating mass production. Our technical excellence and quality service have earned us several prestigious PCB projects in various industries including aerospace, marine, military, industrial, automotive, and security. 

FC PCB Fabrication Capabilities

Our capabilities fulfill any type of printed circuit board manufacturing requirements:
PCB ItemManufacture Capacity
Layer Counts1–20L
Base MaterialFR4,High-TG FR4,CEM3,aluminum,High Frequency(Rogers,Taconic,Aron,PTFE,F4B)
Material Thickness(mm)0.40, 0.60, 0.80, 1.00, 1.20, 1.50, 1.60, 2.0, 2.4, 3.2
Max board size(mm)1200x400mm
Board Outline Tolerance±0.15mm
Board Thickness0.4mm–3.2mm
Thickness Tolerance±8%
Minimum line/space0.1mm
Min Annular Ring0.1mm
SMD Pitch0.3mm
Holes
Min Hole Size (mechanical)0.2mm
Min Hole Size (laser hole)0.1mm
Hole Size Tol (+/-)PTH:±0.075mm;NPTH: ±0.05mm
Hole Position Tol±0.075mm
Plating
HASL/LF HAL2.5um
Immersion GoldNickel 3-7um Au:1-5u”
Surface FinishHAL, ENIG, Plated Gold, Immersion Gold, OSP
Copper Weight0.5–6oz
Color
Solder maskGreen, Blue, Black, White, Yellow, Red, Matt Green, Matt Black, Matt Blue
Silk screenWhite, Black, Blue, Yellow
Acceptable File FormatGerber file, Powerpcb,CAD,AUTOCAD,ORCAD,P-CAD,CAM-350,CAM2000
CertificateROSH,ISO9001

FC PCB Fabrication Procedure

Through years of rapid development with advanced technology, the PCB fabrication process is now fully automated. The PCB manufacturing process starts with drawings, goes through an intricate multi-stage production stage, and ends with finished products. Each step is critical and builds on the earlier steps of the process, so when discussing how PCBs are made, we need to have a holistic understanding of the entire process. Next, we’ll go over each step in detail.

PCB Fabrication Flow Chart

Step One:PCB design

At FC, the first step in any PCB fabrication is design. The making and design of PCBs always begin with a plan: the designer of FC creates a blueprint for the PCB that fulfills all the requirements outlined. The following steps are the PCB design process of FC Technology:

PCB Design Flow Chart
PCB Schematic: A diagram used to show the connection relationship of components on a circuit board. It can be said that the schematic drawing is the circuit board manufacturing process’s focus and is the circuit board’s soul. The program’s quality is closely related to the quality of the work.
PCB Diagram: This refers to the schematic of installing basic electronic components. With some knowledge of PCB boards, you probably know that PCB boards are made of metal foil covered with an insulating board underneath, and then the unwanted parts of the foil are corroded. The remaining foil is then used as a connection for the PCBA components, which can now be assembled according to the markings on the PCB diagram.
BOM file: This refers to procurement files, for turnkey projects, these files are used for PCBA component procurement, SMD processing, and soldering.
Component Footprint Library: A library of prototypes for components used on the schematic.
PCB package library: It refers to the external package library of chips, resistors, capacitors, etc. on the PCB board.
CAM files: The files refer to the Gerber and NC Drill files, which can be exported by all design software and are mainly used by PCB manufacturers.

Step Two:Material Selection

PCB material selection is a significant aspect of the design and manufacturing process. The choice of material can greatly affect the final product’s performance, reliability, and cost.
 
The heart of a PCB is the substrate, commonly known as the circuit board. PCB substrates are usually made of fiberglass-reinforced epoxy, which provides a strong and flexible base. Copper foil is laminated to the substrate and serves as electrical material for power lines. The thickness of the copper layer can be varied according to the requirements.
 
There are other substrate materials as well that may be used for different purposes, for example, Aluminum Substrate is used when an increased amount of thermal emission is required to keep the components cool, or Polyimide to make the PCB flexible.
Etching

Step Three:Etching

In making a PCB, etching is key. It removes excess copper from circuit boards and makes the needed electronic parts visible. A special mask, which stops reflection, is put on the copper surface. Only the spots that show the power pathways aren’t covered by it. The PCB is then dunked in a special liquid. This liquid eats away at any exposed copper, and what’s left are the detailed lines that make up the circuit.

Step Four:Drilling and Plating

Drilling
After etching, the drilling process begins and is guided by X-ray for accuracy. Drilling is one of the important parts of the PCB manufacturing process, which is used to mount components on the PCB board or to connect the board to other boards or devices. This part of the process is relatively expensive and time-consuming. Therefore, the drilling of holes needs to be implemented carefully.
Drilling
Plating
To improve conductivity and strengthen these strategic connections, a small amount of copper is used in the plating and applied as a lightweight coating. A thin copper film deposited onto this surface acts as a conductor to enhance the electric current and properly links up with others.  However, this copper not only enhances the conductivity but also plays an important role in transmitting signals and power across complex layers of the PCB. In the complicated ballet of electrons, this microscopic coating turns the PCB into a symphony of interconnections that ensures smooth communication among electronic devices and power sources. From there, it becomes an amalgamation of science and art – precision drilling and selective application of copper – that gives birth to a masterpiece within circuitry production.
Plating

Step Five:Solder Mask and Silkscreen

Masks are used to protect small electrical lines and facilitate their placement. This process covers the entire circuit board, but not the contacts. The mask can protect the board from the environment and enhance the beauty of the board. Additionally, printing has been added to the label, and assembly instructions are provided to help improve the clarity of the printed circuit board.

As shown below, the solder mask layer is green, and the silkscreen layer is white.

Solder Mask
Silkscreen

Step Six:Component Placement

Now, we move on to the next phase, which focuses on carefully positioning the electronics onto the PCB. In this crucial task, sophisticated robotic machines come into play, swiftly and precisely placing tiny components to guarantee seamless integration within the system. After this delicate operation, the components are securely attached to the board using surface mount or through-hole soldering techniques.

Step Seven:Quality Control and Testing

Precision and accuracy are imperative in manufacturing Printed Circuit boards (PCBs) since even a simple error can have a huge impact on the final electronic device. Our utility the Automated Optical Inspection (AOI) system can effectively prevent this kind of situation. This AOI is like an alert watchdog that thoroughly examines each detail of the PCB’s layout and components. It can pick out signs of trouble from incorrect placements of components, poorly done soldering jobs, or even missing parts.

Step Eight:Finalizing and Packaging

After deep quality tests, the PCB prepares for the last steps and packing. We meticulously check each board to verify that they meet the customer’s requirements and conform to industry rules. The end-product PCBs may have an added safeguard layer to boost their lifespan, adjusting to the nature of their use and standing up to what the environment throws at them.

FC PCB Fabrication Factory

Our factory outputs over, 30000 ㎡/month & PCB is widely used in the fields of telecom, industrial control, medical equipment, and automotive. The below pictures will show you our PCB Workshop & Equipments:

CNC Drilling

CNC Drilling Room
CNC Drilling Room
Drilling Machine
Drilling Machine
Drilling Machine (1)
Drilling Machine

Developing Lines

Developing Line
Developing Line

Etching Lines

Inner Layer Pretrement Line
Inner Layer Pretrement Line
Alkaline Etching Line
Vacuum Etching Line

PTH Lines

PTH Lines
EVCP Plated Line
PTH Lines

Exposure Room

Exposure Chamber
Exposure Chamber
Exposure Chamber2
Exposure Chamber2
Exposure Chamber3
Exposure Chamber3

Silkscreen Printer

Silkscreen Printer
Silkscreen Printer

Testing Machines & Other Machines

AOI Room
AOI Room
Fying Probe Test Machine
Fying Probe Test Machine
Testing Room
X-ray Machine
X-ray Machine
Beveling machine
Beveling Machine
Board Cut Machine
Board Cut Machine

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