Double Side PCB

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.

Advantages of Heavy Copper PCB

✔ Increased Circuit Density: Supports more complex circuits than single-layer PCBs.

✔ Compact Design: Ideal for space-constrained applications.

✔ Improved Electrical Performance: Reduced interference and better signal integrity.

✔ Cost-Effective Solution: Balances complexity and affordability.

Double-Sided PCB VS. Single-Layer PCB

Why Choose Us

Competitive Pricing

More than a decade of experience in the PCB industry ensures quality components at competitive prices.

Fast and reliable delivery

Partnership with multiple global logistics providers ensures timely and reliable shipping.

Quality Assurance

A dedicated quality control team conducts manual visual inspections 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.