Double side PCB, short for double-sided printed circuit boards, are the workhorses of the electronics industry. They provide a versatile and efficient platform for connecting electronic components in various devices, from your smartphone and computer to your car’s engine control unit. In this introduction, we’ll delve into what double-sided PCBs are, their essential parameters, and the manufacturing process that brings them to life.
Key Parameters of Double-Sided PCBs：
Number of Layers: A double-sided PCB consists of two layers of substrate material, separated by a core layer. Copper traces are etched on both sides, allowing for more complex circuits and higher component density.
Size: Double-sided PCBs come in a variety of sizes and shapes and can be tailored to the specific requirements of the device in which they are used. Standard sizes (such as 4×6 inches) are typical, but custom sizes are available for unique applications.
Copper Thickness: The thickness of the copper layer on a double-sided PCB is measured in ounces per square foot (oz/ft²). Standard thicknesses include 1 oz and 2 oz, with thicker copper providing better current carrying capabilities.
Hole Size: Double-sided PCBs have holes for component leads or connectors. The accuracy and size of these holes are critical to ensuring proper component alignment and soldering.
Solder mask and silk screen: Solder mask is a protective layer applied to the PCB to prevent solder bridges and corrosion. A silkscreen layer is used for component markings and indicators.
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Manufacturing process:
The production of a double-sided PCB involves several key steps:
Substrate preparation: The substrate (usually fiberglass epoxy) is cut to standard or custom sizes. It is then cleaned and prepared for the copper foil lamination process.
Copper Cladding: Copper foil is laminated to both sides of the substrate using heat and adhesive. These foils will become the conductive traces on the PCB.
Circuit Design: Computer-aided design (CAD) software creates the circuit design of a PCB, including trace and component placement.
Etching: Using chemicals to etch away unwanted copper, leaving the desired traces and pad patterns.
Drilling: Drill holes for components and vias, which are small holes used to connect traces on different layers. This step requires precision to ensure members are aligned.
Plating: Plating holes with copper to enhance their conductivity and ensure a strong connection.
Solder Mask and Screen Printing: Multi-layer solder mask and screen printing protect and mark PCBs.
Testing: To ensure functionality and reliability, double-sided PCBs require electrical testing, including continuity checks and insulation resistance testing.
Why choose us:
Competitive Pricing: With more than a decade of experience in the PCB industry, we have established a reliable supply chain that ensures quality components at competitive prices. For complex projects requiring unique materials or advanced technical specifications, our strong manufacturing capabilities enable us to provide cost-effective solutions while maintaining high quality.
Fast and reliable delivery: We ensure fast production and delivery. Our partnership with multiple global logistics providers guarantees timely and reliable transportation, supported by our digital factory management and 90% automation for greater efficiency.
Quality Assurance: Our rigorous quality inspection begins with incoming material checks. We use AOI to detect defects and X-rays to identify internal issues. Electrical performance testing is performed with advanced automatic test machines and flying probe testers. Before shipment, our dedicated QC team conducts a thorough manual visual inspection to ensure all products meet strict quality standards.
We have many international certifications:
We also hold several international quality certifications:
●IATF 16949:2016
●ISO 9001:2015
●ISO 45001:2018
●UL
At the same time, we are always committed to environmental protection. We have an environmental management system certification to ensure that our manufacturing process is environmentally friendly and sustainable.
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