Tinned Copper Foil

Tin-plated copper foil primarily consists of copper and tin, with copper making up the majority of the composition at around 95%, while tin serves as a secondary component, accounting for approximately 5%. The exact composition may vary depending on the production methods and material choices.

 

This material features a thin layer of metallic tin applied to the surface of copper or copper alloys, which significantly enhances its corrosion resistance and improves its processability. As a result, tin-plated copper foil offers outstanding properties, including excellent corrosion resistance, superior weldability, and exceptional formability, making it a versatile and reliable material for various applications.

 

Tinned Copper Foil is available in a wide range of standard sizes and thicknesses to meet diverse industrial needs. Additionally, custom sizes can be produced upon request to suit specific applications. This material consists of copper coated with a layer of tin, which provides excellent resistance to water corrosion while maintaining high electrical conductivity. Compared to bare copper foil, tin-plated copper foil offers enhanced durability, making it a more reliable choice for applications requiring long-term performance in challenging environments.

 

 

 

Foil Thickness	0.1-0.8mm
Cu-Underlayer Thickness	0.5-1.5μm
Coating Thickness	0.8-2μm
Coating Thickness Tolerance	±0.5μm
Inside Diameter of Coil	250,300 400mm
Coil Weight(Kg/mm)	Max 6kg/mm

 

 

• Electrical Conductivity

Copper is known for its high electrical conductivity, and the tin coating does not significantly hinder this property.

• Corrosion Resistance

The tin layer protects the copper from oxidation and corrosion, extending the material's lifespan.

• Solderability

The tin coating improves the foil's ability to bond with solder, making it easier to use in electronic assemblies.

• Thermal Conductivity

Copper's inherent thermal conductivity is maintained, allowing for efficient heat dissipation.

• Flexibility

Tinned copper foil retains the flexibility of copper, making it suitable for applications requiring bending or shaping.

• Durability

The tin layer enhances the mechanical strength and wear resistance of the foil.

 

 

• Cleaning

The copper foil is thoroughly cleaned to remove any impurities or oxides.

• Tinning

A thin, uniform layer of tin is applied to the copper surface using methods such as electroplating or hot-dipping.

• Quality Control

The tinned foil undergoes inspections to ensure proper coating thickness, adhesion, and surface quality.

 

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• Enhanced Protection

The tin coating prevents oxidation and corrosion, even in harsh environments.

• Improved Solder Joints

The tin layer ensures reliable and strong solder connections, reducing the risk of defects in electronic assemblies.

• Longer Lifespan

The protective tin layer extends the durability of the copper foil, making it suitable for long-term applications.

• Cost-Effective

Tinned copper foil offers a balance between performance and cost, as it provides the benefits of tin without the need for solid tin materials.

 

 

• Printed Circuit Boards (PCBs)

Used as a conductive layer in PCBs due to its excellent solderability and corrosion resistance.

• RFI/EMI Shielding

Employed in shielding applications to protect electronic devices from electromagnetic interference.

• Battery Electrodes

Used in lithium-ion and other batteries for its conductivity and resistance to corrosion.

• Cable Wrapping

Applied in cables and wiring to enhance conductivity and protect against environmental damage.

• Transformers and Inductors

Utilized in windings and coils due to its electrical and thermal properties.

• Solar Panels

Used in photovoltaic cells for its durability and conductivity.

 

 

• Better resistance to oxidation and corrosion.
• Improved solderability for electronic assemblies.
• Enhanced durability in harsh environments.
• Maintains the electrical and thermal conductivity of copper.

Tinned copper foil is a versatile and reliable material that combines the superior electrical and thermal properties of copper with the protective benefits of a tin coating. Its applications span across electronics, energy, and industrial sectors, making it an essential material for modern technology. By offering enhanced corrosion resistance, solderability, and durability, tinned copper foil ensures optimal performance in demanding environments.

 

 

 

 

 

Q1: What info. should I let you know if i would like to get a quotation for the the Electrolytic copper foil?

A1: The material size (Thickness*Width*Length and total Qty). If possible, it would be more better to advise the application of the product

Then we can recommend the most suitable products with details for confirmation.

 

Q2:How long is your delivery time?

A2:Generally it is 5-10 days base on we have stock on hand. or 15-20 days if no inventory, then need check with our production team for lead time according to the quantity.

 

Q3: Do you provide samples ?

A3:Yes, if standard sizes sample is free but buyer need to pay freight cost.

 

Q4:What is your terms of payment ?

A4: Normal payment term is 30%TT, 70% before shipment get ready to ship

 

Q5: How do you guarantee the quality of the products?

A5: Each step of production and finished products will be carried out inspection by QC department before storing to the warehouse. NG products are not allowed in the completed goods warehouse.

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