PCB Assembly China
16+ Years in PCB Assembly in China
- SMT assembly, PTH assembly, SMT+PTH mixed
- PCB Fabrication, Component Sourcing & Turnkey PCB Assembly
- SOIC, QFP, QFN, BGA, uBGA, CGA, LGA, CSP, Components as small as 0201
- IC Programming & PCBA Testing
- ISO9001:2015, ISO 13485:2016 Certified & UL Listed
- 100% AOI, X-RAY, ICT & FCT
- No MOQ & Competitive Pricing
PCB Assembly
In the ongoing effort to enhance the quality of life, electronics have played a pivotal role in advancing various systems. The deployment of cutting-edge technologies like AI (Artificial Intelligence), wireless networking, machine learning, and IoT (Internet of Things) has further accelerated the production of electronic devices.
These devices are deeply integrated into many aspects of our daily lives, often going unnoticed yet making a significant impact. Innovations such as mobile phones and computers are perfect examples of how technology has addressed societal challenges. These gadgets rely on circuit boards that enable incredible features like wireless communication, automation, and multitasking. Today, more and more PCB assembly manufacturers, like Gold Mate, are driving the continued development of PCBs and PCBA, powering the future of electronics.
What is PCB Assembly?
PCB Assembly is the process of soldering electronic components onto a bare PCB (Printed Circuit Board). To understand this process better, let’s first explore what a PCB is. A PCB is an electronic circuit board where components are mounted to perform specific functions within an electronic device.
The components used in PCB assembly can be categorized into two main types: passive and active components. Passive components do not contribute to the power gain of a circuit, while active components can amplify an input signal.
PCB assembly can be done manually or with machines, though automated equipment is preferred in most cases due to its efficiency and reliability. There are two primary types of PCB assembly: PTH (Plated Through-Hole) assembly and SMT (Surface Mount Technology) assembly.
Two Main Types of Printed Circuit Board Assembly
Through Hole Technology
We specialize in traditional PCB assembly methods, including Through-Hole Technology (THT). This process involves inserting component leads into pre-plated holes on the PCB, enabling the interconnection of parallel layers. Using an automated insertion machine, we upload a program to the machine controller, ensuring precise placement.
We work with two types of components for Through-Hole Technology (THT) assembly: axial lead and radial lead components. An axial lead component has leads that extend along its axis, while a radial lead component features leads that run perpendicular to its major axis.
Once the components are inserted automatically and undergo the wave soldering process, we conduct thorough PCB testing to ensure quality. This testing identifies any electrical openings or shorts by measuring the node-to-node resistance when electrical current is applied, ensuring your circuit boards meet the highest standards of performance and reliability.
We work with two types of components for Through-Hole Technology (THT) assembly: axial lead and radial lead components. An axial lead component has leads that extend along its axis, while a radial lead component features leads that run perpendicular to its major axis.
Once the components are inserted automatically and undergo the wave soldering process, we conduct thorough PCB testing to ensure quality. This testing identifies any electrical openings or shorts by measuring the node-to-node resistance when electrical current is applied, ensuring your circuit boards meet the highest standards of performance and reliability.
The Advantages of Through Hole Technology
- Through-Hole Technology (THT): Provides enhanced mechanical strength for your PCBs. The component leads pass through the layers of the printed circuit board, ensuring a secure and durable connection. This results in a robust overall structure, making THT ideal for devices that endure frequent mechanical stress. Trust Gold Mate to deliver high-strength, reliable PCB assemblies for your most demanding applications.
- Easier to Adjust and Repair: We understand the importance of flexibility in PCB assembly. Through-Hole Technology (THT) makes it easier to adjust, repair, and replace components. Since the leads are inserted through the PCB and wave soldered on the other side, disassembly and modifications are more straightforward. This makes THT an excellent choice for testing, prototyping, and projects where frequent adjustments are needed, providing you with greater convenience and control.
Surface Mount Technology
The latest in PCB assembly methods, including solder paste technology, which allows for direct mounting of components onto the board pads. This approach enables closer component spacing, contributing to the miniaturization of electronic devices. With smaller pads, packages, and circuitry, surface mount technology (SMT) offers significant advantages for compact designs. However, certain applications still require the durability and mechanical strength provided by Through-Hole Technology (THT). For power supplies, for example, components like transformers and capacitors benefit from the robust connections that THT provides. At Gold Mate, we offer both THT and mixed assembly techniques to meet the diverse needs of your projects.
The Advantages of Surface Mount Technology
As more companies shift towards SMT over Through-Hole Technology (THT), we offer a range of benefits through our advanced SMT processes, ensuring your designs are efficient, cost-effective, and high-performance.
- Smaller and Lighter Packages: Unlike Through-Hole Technology (THT), SMT eliminates the need for drilling holes in the PCB, resulting in smaller, lighter, and more compact packages for your electronic devices.
- Higher Pin or Lead Counts: Surface Mount Technology (SMT) enables higher I/O counts by allowing components with more pins and leads to be mounted directly onto the PCB surface. This capability supports more complex designs and increased functionality in smaller, more efficient packages.
Basic Processes in Printed Circuit Assembly
Solder Paste Printing: The first step in PCBA is solder paste printing, where solder paste is applied to the PCB using a screen printing technique. We use lead-free SAC solder paste (Tin, Silver, and Copper alloy) to comply with regulations on hazardous substances. The solder paste, made of epoxy resin and metal filler, is evenly distributed onto the stencil apertures by a squeegee passing through a metal mesh.
Component Placement: In the component placement process, an automated pick-and-place machine picks and positions the required components on the PCB, based on the programmed orientation. The tackiness of the solder paste temporarily holds the components in place for the next step.
Once the components are placed, the PCB is sent through a reflow oven. The board is preheated to a lower temperature to allow for proper outgassing of the flux and thermal conditioning of the components. The temperature is then ramped up to peak levels, melting the solder paste. Afterward, the temperature is cooled to cure and fully cross-link the solder. This process can be done using infrared radiation (IR) or convective hot air.
Why Choose us as your PCB Assembly Partner?
Solder Bridging
Quality and Reliable Products
Featured Products
Gold Mate is a trusted and reliable PCB manufacturer in China, specializing in small to medium-volume PCB fabrication, PCB assembly, and electronic manufacturing services. As an experienced circuit board supplier, we offer a wide range of products and services, including rigid PCBs, flex PCBs, rigid-flex PCBs, aluminum PCBs, RF microwave PCBs, high-speed PCBs, high-frequency PCBs, HDI PCBs, and more.
In addition to our expertise in PCB manufacturing, Gold Mate provides turnkey assembly, component sourcing, box build assembly, PCBA testing, and comprehensive electronics testing and assembly. We are your one-stop solution for all your PCB and electronic manufacturing needs.
With over 16 years of experience in the industry, Gold Mate serves over 1,000 customers worldwide across various industries. You can rely on us to meet your complete electronics manufacturing demands with precision and efficiency.
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“Gold Mate is your trusted partner and one-stop solution for PCB fabrication, component sourcing, PCB assembly, and electronic manufacturing. With over 16 years of experience, we have been delivering high-quality PCBs at competitive prices to over 1,000 customers worldwide. Our company is ISO9001:2015 certified and UL listed, ensuring that all our products undergo 100% electrical testing and are inspected with AOI and X-RAY to meet the highest industry standards. Contact our sales team today for an instant quote, and let us handle the rest.”
Frequently Asked Questions
Gold Mate manufactures a wide variety of PCBs, including rigid PCBs, flex PCBs, rigid-flex PCBs, aluminum PCBs, RF microwave PCBs, high-speed PCBs, high-frequency PCBs, HDI PCBs, and more. We offer solutions for various industries, ensuring the highest quality and reliability.
We provide comprehensive PCB assembly services, including through-hole assembly (THT), surface-mount technology (SMT), BGA assembly, and turnkey assembly. Our services also include functional testing and PCB rework to ensure the highest quality.
Yes, Gold Mate offers PCB design services to help optimize your designs for manufacturing. Our experienced engineers work closely with you to ensure your design is optimized for performance, cost-efficiency, and manufacturability.
We serve a wide range of industries, including automotive, telecommunications, consumer electronics, medical devices, industrial equipment, aerospace, energy, robotics, IoT, and more. Our diverse expertise allows us to meet the unique needs of various sectors.
Our MOQ depends on the type of PCB and the complexity of your order. Please contact us with your specific requirements, and we will provide you with detailed information based on your needs.
The production and assembly timeline depends on the complexity and volume of your order. Typically, prototypes can be completed in 5-7 days, while larger production runs may take 2-3 weeks. For more precise delivery times, please reach out with your project details.
Yes, Gold Mate offers component sourcing services to ensure you have access to the right parts for your project. We can source components from trusted suppliers worldwide, ensuring quality and cost-efficiency.
Gold Mate adheres to internationally recognized quality standards, including IPC-A-600 for PCB manufacturing and IPC-A-610 for PCB assembly. We meet IPC Class 2 standards and can accommodate Class 3 or Class 3A standards for more demanding applications.
Yes, we specialize in small to medium-volume orders, offering flexibility for high-mix projects. Our agile manufacturing processes allow us to meet the unique requirements of each customer, regardless of order size.
To get a quote, simply contact us with your project details, including the PCB specifications, quantity, and any assembly requirements. Our team will review your requirements and provide you with a detailed quote tailored to your needs.
