Views: 0 Author: Site Editor Publish Time: 2021-05-17 Origin: Site
Copper-clad laminate (CCL) is a substrate coated with copper foil on one or both sides. It is commonly made by laminating materials such as fiberglass cloth, paper, or plastic with copper foil. In printed circuit sheet (PCB) manufacturing, CCL is essential for creating circuit connections while providing electrical and mechanical support. The thickness and quality of the copper foil can be customized to suit specific application requirements.
While CCL and PCB are closely related, they serve different purposes:
Copper Clad Laminate (CCL): A base material with copper foil used as the foundation for creating PCBs.
Printed Circuit Sheet (PCB): A composite material made by pressing multiple layers of CCL and insulation materials. PCBs are used for multi-layer circuits and higher circuit density.
Properties: Made of paper impregnated with phenolic resin.
Applications: Used in single-sided consumer electronics.
Limitations: Inferior electrical properties, low arc resistance, and rated to 105°C.
Properties: Low water absorption, excellent insulation, and arc resistance.
Applications: Common in various electronics.
Grades: Available in several grades, typically rated to 130°C.
Properties: Aluminum or metal core clad with thermally conductive thin dielectric layers.
Applications: Power switches, LEDs, and components requiring significant cooling.
Thickness Options: Commonly 0.8mm to 3mm.
Kapton/UPILEX: Polyimide foils used in flexible circuits.
Pyralux: Polyimide-fluoropolymer composite foil.
FR-1: Similar to cardboard, rated to 105°C, with low moisture resistance.
FR-3: Cotton paper impregnated with epoxy.
FR-4: The most common grade with versatile applications.
FR-5: High strength at elevated temperatures, rated to 170°C.
G-10: Offers high insulation resistance and low moisture absorption.
G-11: Retains strength at high temperatures and resists solvents.
CEM-1 to CEM-5: Varying combinations of cotton paper, woven glass, and epoxy for different applications.
Standard PTFE: High-frequency applications, low dielectric loss.
Ceramic-Filled PTFE: Adjustable dielectric properties for specialized uses.
Properties: Ceramic material with high thermal conductivity and mechanical performance.
Applications: High-performance electronics.
When selecting a CCL, consider factors such as application requirements, electrical properties, thermal performance, and thickness. The right choice ensures optimal functionality and durability in your PCB designs.
For further assistance in selecting or sourcing copper-clad laminates, please contact Fenhar Insulation Material Manufacturers, experts in PCB materials.
