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China Through-hole PCB Assembly

China Through-hole PCB Assembly

through hole assembly
through hole soldering

GreensTone provides china automated through hole pcb assembly services to meet conventional lead assembly requirements of a variety of industries. We provide single, double-sided, as well as high-density multilayer Plated Through Hole (PTH) circuit board assembly services to meet low to mid volume production. Most through-hole printed circuit board services are designed to provide high-quality products to mission-critical applications to industries such as new energy like EV charger, industry control like Electric meters, and military.

China Automated Though hole PCB Assembly Testing and Inspection Capabilities

  • Automated Optical Inspection: Abbreviated as AOI, these tests are performed to ensure that product is free from soldering, component, and BGA defects.

  • Burn-in Tests: These tests to detect components failure or reliability in real environments.

  • Automated X-Ray Inspection: This testing is performed to inspect insufficient fills, short circuits, fills, etc. The automated X-ray inspection helps reduce the number of defects, and improve the quality of the Through-Hole circuit.

  • In-Circuit Testing: This type of testing is conducted for high volume production lines, and helps us check every minute soldering, and other components in detail. 

  • Assisted Visual Inspection

China Though hole PCB Assembly Cases in GreensTone

smt pcb
smt manufacturer
smt in pcb
smt electronics manufacturing
smt control board
smt circuit board
smt circuit
smt board assembly
smt assembly supplier
smt assembly service
smt assembly manufacturer
smt assembler
smt  pth assembly
smd pcb manufacturer
smd pcb assembly
smd board assembly
prototype smt pcb assembly
prototype smt assembly
pick and place pcb assembly
pcb smt assembly
pcb pick and place service
pcb and smt
double sided smt assembly
assembled pcb smt

Yes, thanks for your update on the projects status,it’s good for me to make our order plan.

—— Pablo from Spain June 20th, 2019.

Your engineer check the files very carefully,thank you for it, it helps me a lot.

—— Mark from a leading LED strips supplier in Australia Match,8th 2018.

The goods arrived very well, the packing is good, thank you.

—— Antonio from Valladolid, Spain May 25th, 2017.

We've been worked with GreensTone for many years, there is no failure.

—— Wally Nunn from Australia---a leading Pool products manufacturer July13th, 2016.

I reached out to GreensTone Electronics to manufacture the circuit boards. After a few discussions, Rebecca could see the community focus of the project and went above and beyond to reduce costs, ensure delivery and filmed elements of the production for educational purposes. Manufacturing offshore isn't as easy as it appears on the surface so it was invaluable to have Rebecca believe in the cause and be an ally in the production working toward the same goal.

—— Mic. from Australia Feb. 10th, 2015, written on his Facebook.

Yes, thank you we received the 34x LC VMS TILE 1C REV A earlier this week. The assembly quality is very good.

—— Ruth from Australia April 9th, 2014.

Thank you for taking time to check it,you are very efficient.

—— Peter Astrom from Sweden Sep 8th, 2013.

Your engineer is very clever,thanks for the help to check the file's problem.

—— Tony from Australia July 21st, 2012.
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What Are The Applications For China Automated Through-hole PCB Assembly?

China through hole PCB assembly, though a traditional method, continues to find its niche in various specialized applications:

Aerospace and Defense: In critical aerospace and defense systems, where reliability is paramount, through-hole components offer robust connections that withstand harsh conditions and vibrations. China through hole PCB assembly are commonly used in avionics, radar systems, and military hardware.

Medical Devices: Medical equipment, including life-saving devices like pacemakers and diagnostic instruments, often rely on through-hole assembly due to its durability and adherence to strict medical standards.

Industrial Automation: Components for industrial automation must endure tough environments with high temperatures and vibrations. China through hole assembly components excel in these settings, making them essential for motor control systems and sensor interfaces.

Automotive Electronics: Certain automotive applications, such as engine control units (ECUs) and airbag systems, benefit from the robustness of through-hole components, which can withstand the mechanical stresses and temperature variations in vehicles.

High-Power Devices: For high-power applications, where components need to handle substantial current and heat dissipation, China through hole PCB assembly components are preferred. Examples include power amplifiers and voltage regulators.

Prototyping and Development: In the early stages of product development, through-hole components are chosen for their ease of manual assembly and modification. They facilitate testing and prototyping processes.

Legacy Systems: Older electronic systems and legacy equipment often rely on through-hole components. Repairing or retrofitting these systems often requires China through hole assembly to maintain compatibility.

Education and Training: China through hole PCB assembly is commonly used in educational settings to teach electronics fundamentals. Its simplicity and accessibility make it an excellent starting point for students learning about PCB assembly.

China Automated Through Hole Pcb Assembly Design Process

Designing a PCB for through-hole assembly is a meticulous process that involves several key steps. Here, we'll walk you through the through-hole PCB assembly design process, highlighting each stage's significance:

1. Project Requirements Analysis:

Begin by thoroughly understanding the project's requirements, including component types, performance specifications, and environmental conditions. These insights shape the design objectives.

2. Schematic Capture:

Create a schematic diagram using Electronic Design Automation (EDA) software. This schematic illustrates the electrical connections between components, forming the basis of your PCB design.

3. Component Selection:

Choose through-hole components that align with project requirements, considering voltage ratings, current handling capacity, and physical size. Availability of components is also a key factor.

4. PCB Layout Design:

Utilize PCB design software to place components on the board. Carefully consider factors like component orientation, spacing, and signal routing to optimize functionality and ease of assembly.

5. Routing and Tracing:

Create copper traces on the PCB to establish electrical connections between components as per the schematic. Ensure proper signal integrity, avoiding cross-talk or interference.

6. Design Rule Check (DRC):

Run a DRC to identify and rectify any design violations or errors, ensuring the design adheres to manufacturing and assembly standards.

7. Footprint and Hole Placement:

Define component footprints and hole placements, ensuring alignment with through-hole components' lead spacing and size.

8. Thermal Considerations:

Pay attention to components that may generate heat and incorporate thermal management strategies, like vias or heatsinks, to maintain proper operating temperatures.

9. Layer Stackup:

Determine the number of PCB layers needed and establish the layer stackup, considering factors such as signal integrity and impedance control.

10. Design Review:

- Conduct a comprehensive design review to identify any potential issues or optimizations, involving multiple stakeholders if necessary.

11. Documentation:

- Generate detailed design documentation, including Gerber files, assembly drawings, and bill of materials (BOM), to guide PCB fabrication and assembly.

12. Prototyping:

- Before full-scale production, create a prototype to validate the design's functionality and make any necessary refinements.

13. Manufacturing and Assembly:

- Once the design is finalized and validated, proceed to PCB fabrication and through-hole assembly.

14. Testing and Quality Control:

- Rigorously test the assembled PCBs to ensure they meet performance standards and quality criteria.

15. Production:

- Scale up production for the required quantity, ensuring consistency and adherence to design specifications.

Throughout this process, collaboration with experienced PCB designers and assembly experts is essential to ensure a successful through-hole PCB assembly design. Attention to detail, adherence to standards, and thorough testing contribute to a reliable and functional final product.


China through-hole PCB assembly is a conventional method of mounting electronic components onto a printed circuit board (PCB). Here's how the process works:

Component Insertion:

Through-hole components have leads (wire-like extensions) that are inserted into corresponding holes on the PCB. These holes are plated with conductive material to create electrical connections.


Once components are inserted, the PCB is typically flipped over, and the leads protruding from the bottom are soldered to create secure electrical connections. This soldering process can be manual or automated.

Trimming and Cleaning:

Excess lead lengths are trimmed, and the PCB is cleaned to remove any flux residue or contaminants.

Quality Control:

The assembled PCB undergoes thorough quality control checks to ensure proper soldering, component placement, and functionality. This may include visual inspection, automated testing, and functional testing.

Secondary Assembly (Optional):

In some cases, through-hole assembly may be combined with surface mount technology (SMT) assembly to accommodate a wider range of components and functions. This is known as mixed-technology assembly.

Final Testing:

The completed PCB is subjected to final testing to verify its performance and functionality according to project requirements.

Packaging and Shipping:

Once the PCBs pass all quality checks, they are packaged according to customer specifications and prepared for shipping.

Our Through Hole PCB Assembly Capabilities

At GreensTone, we pride ourselves on our extensive capabilities in through-hole PCB assembly. Our commitment to quality, efficiency, and customer satisfaction sets us apart. Here's an overview of our capabilities:

Experienced Team: Our team of skilled engineers and technicians possesses years of experience in through-hole PCB assembly, ensuring the highest level of expertise.

Comprehensive Services: We offer comprehensive through-hole assembly services, including design support, component sourcing, PCB fabrication, assembly, testing, and quality control.

State-of-the-Art Equipment: We utilize cutting-edge equipment and technology for precise component placement, soldering, and quality assurance.

Customization: We understand that every project is unique. We collaborate closely with our clients to accommodate specific component preferences, design complexities, and compliance requirements.

Quality Assurance: Quality is our top priority. We implement stringent quality control measures at every stage of the assembly process to deliver PCBs of the highest standards.

Efficiency: Our streamlined processes and advanced equipment enable us to complete projects quickly and efficiently, meeting tight deadlines and ensuring on-time delivery.

Cost-Effective Solutions: We focus on cost-efficiency without compromising quality, helping our clients achieve their project goals within budget.

Manual & Automated Through Hole PCB Assembly Services

Our through-hole PCB assembly services encompass both manual and automated processes, allowing us to cater to a wide range of project requirements:

Manual Assembly: For projects with specific requirements or low-volume production, manual through-hole assembly provides the flexibility needed for precise component placement and soldering.

Automated Assembly: High-volume projects benefit from our automated through-hole assembly processes. Our automated equipment ensures efficiency, consistency, and accuracy in component placement and soldering.

GreensTone Is A Through Hole PCB Assembly Expert

With a strong commitment to quality, reliability, and innovation, GreensTone stands as your trusted expert in through-hole PCB assembly. Our extensive capabilities, experienced team, and dedication to excellence make us the ideal partner for your through-hole assembly needs.

When you choose GreensTone, you gain a partner dedicated to the success of your project. Our expertise and commitment to quality ensure that your through-hole PCBs meet the highest standards and are ready to power your electronic products reliably.

4F B5 XuJingChang Industry Zone HaoYe Rd. No.39, XinHe Street, FuYong District, Shenzhen, China