PCB Assembly Services

Printed circuit board assembly is installing and soldering all the necessary electronic components on a printed circuit board to form a complete functional circuit. The process is a critical step in the production of electronic devices. Therefore, choosing a reliable and professional PCB assembly company like FC is crucial!

FC provides PCB assembly one-stop service, rich supply chain management, and a certification system to help customers realize the value of products. We have rich resources and advantages in electronic components, hardware molds, and electronic wires. Our professional engineers and technicians will work closely with you through our customer service staff to ensure the best quality and fastest delivery time. We fulfill thousands of orders from all over the world every day, and with consistent quality and excellent service, we have become one of the leading providers of PCBA services in China.

With more than 10 years of industry experience, FC can not only produce and manufacture HDI PCB, Multilayer PCB, High-Frequency PCB, Rigid-Flex PCB, etc. but also provide DFMA service, PCBA OEM, PCBA assembly, SMT mounting, DIP insertion, component sourcing, assembly and testing one-stop PCBA solution service

If you are looking for the most reliable and experienced PCB assembly manufacturer to work with, FC is the right choice. We have the manufacturing and assembly capabilities to meet your project needs.

Quality Standard
√ IPC-A-610
√ ISO9001
√ IATF16949
√ ISO13485
√ ISO14001
√ UL
√ RoHS
Assembly Technology
SMT PCB Assembly
THT PCB Assembly
√ Mixed Technology PCB Assembly
√ Component sequencers
√ Axial lead inserting
√ DIP sequence inserting system
PCB Assembly Line
√ 8 SMT and THT lines
√ Same-day service to 15-day service
√ 52 million placements per month
√ 0.15 sec/chip, 0.7 sec/QFP
File Formats
— Bill of Materials
—Gerber Files
— Pick-N-Place File (XYRS)
— Passives down to 0201 size
— Leadless Chip Carrier/CSP
— Fine Pitch to 08 Mil BGA
— Repair and Reball
— Part Removal and Replacement
Testing process
— Probe Flying
— Burn In
— Function Test
— Temperature Cycling

FC PCB Assembly Services

Choosing a reliable PCB assembly company is critical if you want a quality product. FC offers a full range of services from prototyping to mass production to meet the different needs of clients at every stage of their projects. As a prominent PCB assembly company in China, We prioritize fast delivery and quality assurance and offer a one-stop solution to help save time and money. You can be assured that your project will be completed successfully when you choose us!

Prototype PCB Assembly

 FC provides you with professional and trustworthy PCB prototype assembly services.

Production PCB Assembly

FC can meet your medium and mass production needs while maintaining the highest standards of quality and consistency.

Surface Mount Technology

Our SMT production line is completely computerized, allowing extremely high accuracy and high throughput. 

Through-Hole Technology

FC has an experienced SMT assembly team that focuses on the automated production of Surface Mount Assemblies.

Mixed Technology Assembly

FC offers fast and efficient Mixed Technology assembly to reduce design cycle time.

BGA Assembly

FC supplies you with high stability, excellent heat dissipation performance for you!

FC PCB assembly Process

The PCB assembly process is a sequential process. In the process, each step has its own importance. The steps of the PCB assembly process are:

Step 1: Component selection

At FC, the first step in the PCBA assembly process is to select the electronic components based on the schematic and Bill of Materials (BOM). The BOM provides a detailed list of components required for the specific design. It includes information such as part numbers, quantities, and reference designators. The assembly team reviews the BOM and ensures that all the necessary components are available for the assembly process. The components can be surface mount technology (SMT) or through-hole (TH) components, depending on how they are mounted on the board.

Step 2: Solder paste

Next, a thin stainless steel stencil is placed over the printed circuit board. With this stencil, FC’s technicians can apply solder paste to specific areas of the final printed circuit board where components are located. The solder paste itself consists of metal solder. The components of the solder are silver, copper, and tin, and the solder paste is mixed with flux. Within a professional PCBA line, the setup ensures that the PCB and solder stencil are in position and a technician applies the soldering paste to the desired areas in precise quantity.

Step 3: Component placement

The third step is to place the components on the PCB. Printed circuit boards are assembled using automated assembly processes, including wave soldering (primarily for through-hole components) and reflow soldering (for surface mount components). Each of these systems has requirements that PCB layout designers need to be aware of to ensure the highest possible manufacturing yields when the boards are in full production.

Reflow soldering

Reflow soldering involves heating the PCB assembly to a specific temperature that melts the solder paste and creates reliable electrical connections between the components and the PCB. The temperature and time of the reflow soldering must be controlled carefully, as too high or too low can damage the components or the PCB. This step ensures that the solder joints are formed properly and provide robust electrical connections.

Wave soldering

When we use THT technology to patch, we will use wave soldering. Wave soldering is to let the soldering surface of the plug-in board directly contact with the high temperature liquid tin to achieve the purpose of welding, the high temperature liquid tin to maintain a sloping surface, and by a special device to make the liquid tin to form a phenomenon similar to the wave, so called “wave soldering”, the main material is the solder bar.

Step 5: Inspection

After the reflow soldering or wave soldering, there is a chance that due to some erroneous movement in the PCB holding tray, the components got misaligned and may result in a short circuit or open connection. These flaws need to be identified, which is called inspection. Inspection can be manual and automated. Visual inspection, automated optical inspection(AOI), or X-ray inspection may be used to detect any defects or soldering issues, such as missing, misaligned, or damaged components, solder bridges, solder balls, cold solder joints, etc. Any identified defects are addressed and corrected at this stage.

Step 6: Cleaning

Once the inspection is complete, the PCB goes through a cleaning process to remove any residue or contaminants that may have accumulated during the assembly process, such as flux, solder, dust, and grease. Various cleaning methods, such as ultrasonic cleaning or aqueous cleaning, can be employed based on the specific requirements and the nature of the contaminants. The cleaning can also be done manually or automatically, using water, alcohol, or other solvents

In some cases, a conformal coating, such as acrylic, silicone, or epoxy is applied to the PCB assembly. The conformal coating can protect the PCBA from moisture, dust, corrosion, chemicals, temperature, etc. The coating is carefully applied to cover all the sensitive components and solder joints while allowing for necessary electrical connections.

Step 8: Quality control and testing

The Final step of PCB assembly is the functional test. This test verifies the proper working of PCB under normal conditions. In the assembly line, some testers provide power and signal through the PCB and monitor the PCB. The test fails if the tester finds any issues like unstable voltage or incorrect signals.

Our PCB Assembly Workshop & Equipments

We have factories specializing in HDMT, multi-layer high precision, high-end processes, and an average monthly production capacity of 25,000 square feet.
Dust-Free SMT Assembly

√ SMT 8 million points a day

√ 3 x Shifts every working day for SMT
( 24hours Operating )

√ 1 x PCBA Depaneling Machine

√ 1 x X-Ray Machine

√ 4 x Industrial Ovens
( For baking important components & Bare Boards )

Each SMT Line (8 Lines in total)

√ 1 x Auto PCB Loading Machine

√ 4 x SONY Pick and Place Machines

√ 1 x DESEN Automatic Solder Paste Machine

√ 1 x Solder Plaste Inspeciton Machine

√ 1 x American ‘HELLER ‘ Reflow-Solering Machine

√ 1 x In-Line Automated Optical Inspection ( AOI )

DIP Workshop

√ 2 x DIP Lines
  (With Wave-Soldering Machine)

√ 1 x Testing Line

√ 1 x Repair Line

√ 1 x BGA Repair Machine

√ 1 x Final Product Assembly Line

2. SONY Pick & Place Machines
DESEN Automatic Solder Paste Machine
3. DESEN Automatic Solder Paste Machine
4. Solder Plaste Inspeciton Machine
American _HELLER_ Reflow-Solering Machine
5. American 'HELLER' Reflow-Solering Machine
Automated Optical Inspection ( AOI Machine )
6. Automated Optical Inspection ( AOI Machine )
7. BLUIRIS‘ First Article Inspection Machine
X-Ray Machine
8. X-Ray Machine
Repair Line
9. Repair Line
Testing Line
10. Testing Line
We insist on quality and service first, and are responsible for every customer. We provide quality pre-sale, in-sale and after-sale services. Starting from the quality of raw materials of products, excellence in PCBA processing quality control systems.

22 years experience

FC is a trustworthy PCB manufacturer, with 22 years of focus on the PCB & PCB Assembly manufacturing field since 2002.

High-Quality PCB assembly

Manufacturing facility with ISO9001 and UL certifications, ensuring high-quality standards and compliance with RoHS, IPC-A-600, and IPC-A-610 industry standards. It promises 100% electrical and electricity performance tests before delivery.

Service assurance

FC offers Quick-turn PCB turnkey services. Its professional technical teams provide DFM service before production.

PCB Assembly Application

We have 22 years of experience in PCBA factory operation and quality assurance; the products involved are widely used in automotive electronics, industrial control, medical devices, household appliances, lighting equipment, communication and telecommunication, aerospace and aviation.

Our Partner

Latest Articles