This thickness range has been expanded in recent years. Manufacturers now offer electrodeposited (ED) copper foils in thicknesses up to , making them suitable for boards designed as heat sinks or to conduct large electrical currents.
IPC-4562 is the industry standard titled "Metal-Clad Base Materials for Rigid and Multilayer Printed Boards." It serves as the generic specification for copper-clad laminates and bonding materials. It replaces the older MIL-S-13949 standard and is widely recognized globally.
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: Ensures the foil can withstand the mechanical stresses of the lamination process and subsequent thermal soldering. Purity and Corrosion Resistance ipc-4562 pdf
Instead of relying strictly on nominal thickness (e.g., 1 oz, 0.5 oz), IPC-4562 defines foil weight by mass per unit area (
: While copper ( CU ) is the primary metal governed by the standard, the framework accounts for other alloys used in specialized wiring applications.
is the primary industry standard governing the procurement and quality requirements for metal foils used in printed circuit board (PCB) fabrication. It covers both unsupported foils and those supported by carrier films. l&g advice serv srl Key Specifications and Classifications This thickness range has been expanded in recent years
To help find the exact specifications you need for your upcoming project, could you tell me:
Fabricators and quality engineers use the PDF as a master reference to audit material certifications (CoC) provided by copper suppliers, ensuring complete compliance before materials enter the production line.
, recommended for high-speed/microwave PCBs to reduce signal loss. Quality Classes : Ranging from Class 1 to Class 3, where It replaces the older MIL-S-13949 standard and is
Tip: Always ensure you are procuring the latest revision (currently IPC-4562B) to meet current industry standards. Conclusion
The following documents are referenced in this standard:
Understanding IPC-4562: The Standard for Printed Board Metal Foils
The document replaces older legacy specifications (such as IPC-MF-150) and provides a unified framework for specifying foil thickness, surface finish, mechanical properties, and purity. Key Classifications and Nomenclature
Produced by mechanically rolling copper ingots into thin sheets. It features a elongated grain structure, making it highly flexible and ideal for flexible printed circuits (FPCs) subjected to dynamic bending. 2. Material Classes and Profiles