Copper Foils

Copper Foils

Copper Foils

Copper Foil Description

Features:
Copper foils are ultra-thin, highly conductive, and corrosion-resistant materials, ideal for applications requiring precision and high electrical performance. With excellent flexibility, uniform thickness, and superior thermal conductivity, copper foils are easy to process, laminate, and integrate into complex systems. Their stable mechanical and chemical properties ensure reliable performance in demanding environments, making them essential for high-precision and high-efficiency applications.

Applications:
Copper foils are widely used in industries such as:

Electronics: Used in printed circuit boards (PCBs), flexible circuits, and electronic shielding, ensuring high conductivity and signal stability.

Energy & Battery: Applied in lithium-ion batteries as current collectors, improving energy efficiency and performance.

Industrial: Used in heat transfer systems, electromagnetic shielding, and precision components requiring conductivity and flexibility.

Automotive: Utilized in electric vehicles, battery systems, and electronic components, supporting high-performance and lightweight design.

Miji Copper provides high-quality copper foils in various thicknesses and grades. We also offer customized solutions according to your specifications. If you have any requirements, please contact us at sales@mijimg.com.

Copper Foils C11000

C11000 copper foil offers high conductivity, excellent flexibility, and corrosion resistance, ideal for PCBs, batteries, and electronic applications.

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Copper Foils C10200

C10200 copper foil features high purity, superior conductivity, and excellent flexibility, ideal for precision electronics and high-performance PCBs.

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Copper Foils C10100

C10100 copper foil offers ultra-high purity, superior conductivity, and excellent flexibility, ideal for high-performance electronics and precision PCBs.

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Copper Foils C19400

C19400 copper foil offers high strength, good conductivity, and excellent fatigue resistance, ideal for connectors, terminals, and precision electronic components.

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Applications & Global Partners

Toyota

BMW

Ford

Mercedes

Bull

Dell

ELEK-TEK

Intel

Applicantion Of Copper Foils

Busbars & Electrical Connectors

High-purity copper sheets providing exceptional electrical conductivity, optimized for power busbars, electrical switches, terminals, and printed circuit components.

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Power Distribution & Transformers

Durable copper plates engineered for transformers, switchgears, grounding systems, and battery pack interconnects requiring minimal electrical resistance.

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Thermal Exchangers & Industrial Parts

Heavy-duty copper plates with superior thermal conductivity, widely used in heat exchangers, boiler pressure vessels, and precision CNC machined industrial parts.

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FAQ

Q: What is the difference between rolled copper foil (RA) and electrodeposited copper foil (ED)?

A: Rolled copper foil (RA) offers high mechanical flexibility and a smooth surface, making it ideal for flexible printed circuits (FPC). Electrodeposited copper foil (ED) features high tensile strength and controlled surface roughness, widely used in rigid PCBs and lithium-ion battery collectors.

Q: What thickness ranges and custom dimensions are available for copper foils?

A: We supply ultra-thin copper foils ranging from 6 µm to 105 µm (1/3 oz to 3 oz) with customizable roll widths, slit dimensions, and tight thickness tolerances tailored to your exact manufacturing requirements.

Q: What surface treatments are available to improve bonding and oxidation resistance?

A: Our copper foils can be supplied with advanced surface treatments, including anti-oxidation passivation, brass/zinc coating, or roughened treatment to significantly enhance corrosion resistance and resin adhesion.

Q: How are copper foil rolls packaged to prevent damage and moisture during transport?

A: Each copper foil roll is vacuum-sealed in anti-static moisture barrier packaging with desiccants, protected by custom foam end-caps, and packed into reinforced wooden crates to ensure zero oxidation or physical damage during international shipping.