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PCB Assembly Services
We specialize in contract manufacturing and have extensive experience in SMT assembly for various applications.
Surface Mount (SMT) PCB Assembly Manufacturer

Prototype to Mass Production

PCB assembly services in prototype quantities to high-volume production runs and SMT prototypes can be delivered quickly within 48 hours.
100% IQC, AOI, QC, X-ray, functional testing Compliant with IPC 610 class 2 and 3 standards, ISO, UL, and RoHS certificated.

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Full and Partial Turnkey

Full turnkey one-stop PCB assembly service with components sourcing. Kitted/Consigned assembly options are available, and you provide parts.
Your Reliable China SMT Assembly Manufacturer
YIZHUOPCB is a leading provider of high-quality PCB manufacturing and assembly services, with a focus on meeting the unique needs of customers in a variety of industries. With years of experience and a commitment to innovation and excellence, YIZHUOPCB has established itself as a trusted partner to customers around the world. The company’s PCB assembly services include a wide range of capabilities, from prototype assembly to small and large batch production. YIZHUOPCB also offers a range of PCB manufacturing services, including single-sided and multi-layer PCBs, HDI boards, and more. With state-of-the-art facilities and a team of experienced technicians, YIZHUOPCB is able to provide customers with exceptional quality and quick turnaround times. Additionally, the company offers competitive pricing and outstanding customer service, ensuring that customers receive the best possible value for their investments.
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What is SMT Assembly Service？
SMT assembly service, or Surface Mount Technology assembly service, is a method of electronic circuit assembly used to mount electronic components directly onto the surface of a printed circuit board. This is in contrast to through-hole technology, where the components are inserted into holes drilled into the PCB.

SMT assembly offers several advantages over the through-hole assembly, including smaller sizes, greater component density, and faster production times. SMT assembly also allows for automated assembly, making it more efficient and cost-effective for large-volume production.

During SMT assembly, the electronic components are first placed onto the PCB using a solder paste that has been screen-printed onto the board. The board is then passed through a reflow oven, where the solder paste melts and the components are soldered to the board.
Improved electrical performance
SMT components have shorter lead lengths, which can reduce parasitic capacitance and inductance, resulting in better electrical performance.
Cost-effective
The use of automated equipment and the reduced need for drilling holes in the PCB can make SMT assembly more cost-effective than through-hole assembly, especially for large production runs.
Faster assembly
SMT assembly is typically faster than through-hole assembly, as it can be automated with pick-and-place machines, reducing the amount of manual labor required.
Higher component density
SMT assembly allows for higher component density on the PCB, which means that more components can be placed on a smaller area of the board.
Benefits of SMT Assembly
SMT assembly provides a more efficient and cost-effective method for assembling electronic circuits, while also offering improved electrical performance and smaller, lighter-end products.

Size and weight reduction
SMT components are smaller and lighter, which allows for smaller PCBs and more compact electronic devices.
SMT Assembly Advantages

Industrial equipment


SMT assembly is used in the production of industrial equipment such as automation systems, motor controls, and power supplies.

Automotive electronics


SMT assembly is used in the production of automotive electronics such as engine control units, infotainment systems, and safety systems.

Aerospace and defense


SMT assembly is used in the production of aerospace and defense electronics, such as avionics, missile systems, and radar equipment.

Applications of SMT Assembly

LED lighting


SMT assembly is used to manufacture LED lighting products, such as light bulbs and fixtures.

Consumer electronics


SMT assembly is used to manufacture a wide range of consumer electronic devices, including smartphones, tablets, laptops, televisions, and gaming consoles.

Medical devices


SMT assembly is used in the production of medical devices such as pacemakers, hearing aids, and insulin pumps.

SMT assembly is widely used in the production of electronic devices, ranging from consumer electronics to industrial equipment. Some common applications of SMT assembly include:
Turnkey PCB assembly services can provide customers with a convenient, cost-effective, and high-quality solution for their PCB assembly needs.

SMT assembly, or Surface Mount Technology assembly, involves several steps to assemble electronic components onto a printed circuit board. Here is a detailed overview of the SMT assembly process:

1. Stencil printing
SMT assembly begins with the application of solder paste to the PCB. This is done using a stencil that is placed over the board and aligned with the locations of the components. The solder paste is applied to the stencil and then pushed through the stencil onto the PCB using a squeegee.

2. Pick and place
The next step is to place the components onto the PCB using a pick-and-place machine. This machine uses a vacuum nozzle to pick up each component from a reel or tray and place it onto the PCB in the correct location. The machine can place multiple components simultaneously, increasing efficiency and accuracy.

3. Reflow soldering
After the components are placed on the board, the PCB is placed in a reflow oven. The oven uses heat to melt the solder paste and join the components to the PCB. The oven has several zones with different temperature settings, and the PCB is moved through the zones on a conveyor belt to ensure even heating.

4. Inspection
Once the PCB has been soldered, it undergoes several inspections to check for defects or errors. These inspections may include visual inspection, X-ray inspection, and automated optical inspection (AOI).

5. Secondary operations
After inspection, any necessary secondary operations may be performed, such as trimming excess leads or adding a conformal coating.

6. Testing
Finally, the assembled PCB is tested to ensure that it functions as intended. This may include functional testing, electrical testing, or other types of testing to ensure that the device meets the required specifications.

SMT Assembly Manufacturing Process

Pick and Place Machine

Reflow Oven

Wave Soldering

Solder Paste Application Using SMT Stencil

X-Ray Inspection

AOI

Conformal Coating Service

IC Programming

Functional Testing

High-quality Materials
We use only the highest-quality materials in our SMT assembly process, including high-precision PCBs, high-quality electronic components, and high-performance solder pastes.
Advanced Equipment
Our SMT assembly process is carried out using state-of-the-art equipment, including pick and place machines, stencil printers, and reflow ovens. This allows us to achieve high levels of accuracy, efficiency, and consistency in our assembly process.
YIZHUOPCB offers a comprehensive SMT assembly service that is designed to meet the needs of customers across a wide range of industries. Our SMT assembly service includes the following features:
We understand the importance of timely delivery, and we work closely with our customers to provide fast turnaround times and on-time delivery.
Fast Turnaround Times
Customizable Solutions
We offer a wide range of customizable solutions to meet the specific needs of each customer, including single- and double-sided assembly, mixed technology assembly, and both low- and high-volume production runs.
Why Choose us for your SMT Assembly Service?
Our team of experienced technicians has extensive expertise in SMT assembly, ensuring that every project is completed to the highest standards of quality and precision.
Experienced Technicians
Comprehensive Testing
We perform rigorous testing and inspection at every stage of the assembly process to ensure that each assembled PCB meets the required specifications and functions as intended.
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SMT assembly and THT assembly are two different methods of electronic circuit board assembly. SMT stands for surface mount technology, while THT stands for through-hole technology.

In SMT assembly, the components are mounted directly onto the surface of the circuit board using solder paste and a pick-and-place machine. The components used in SMT assembly are typically smaller and have more complex packaging, allowing for higher component density and greater functionality in smaller board sizes. SMT assembly also offers higher precision and repeatability, as well as faster assembly times and lower costs.

On the other hand, THT assembly involves mounting components by inserting their leads through holes in the circuit board and then soldering them on the other side. This method is better suited for larger components with thicker leads, such as electrolytic capacitors, power transistors, and relays. THT assembly can also be more robust and reliable, as the components are mechanically secured to the board through their leads. However, THT assembly can be slower and more labor-intensive than SMT assembly, and it may require larger board sizes to accommodate the components.

In summary, the main differences between SMT assembly and THT assembly are the component types, assembly methods, precision, repeatability, speed, and cost. Each method has its advantages and disadvantages, and the choice between them depends on the specific requirements and constraints of the circuit board design and production process.

SMT Assembly vs. THT Assembly: What is the Difference?
SMT vs. SMD: What is the Difference?
SMT and SMD are both related to surface-mount technology, which is a method of mounting electronic components on the surface of a PCB instead of inserting them into holes drilled on the board. However, they are not interchangeable terms and refer to different aspects of the process.

SMT stands for Surface Mount Technology, which is a method of electronic component placement on a PCB. SMT components are designed to be placed directly onto the surface of the PCB without the use of through-holes. This technique allows for smaller and more densely packed PCBs that can operate at higher frequencies.

SMD stands for Surface Mount Device, which refers to the actual electronic components that are designed for SMT. SMD components are tiny electronic parts that are designed to be mounted on the surface of a PCB. They typically have flat metal contacts (or pads) on the bottom that can be soldered directly onto the PCB.

In summary, SMT refers to the method of PCB assembly while SMD refers to the electronic components that are designed for use in SMT.

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