Find HS Code and trade information for copper foil patch

Copper Foil Patch

A copper foil patch is a thin sheet of copper adhered to a backing material, typically an adhesive. These patches are utilized for a variety of applications requiring electrical conductivity, shielding, or thermal management.

Material:

• Copper Foil: Typically electrolytic copper, offering high conductivity. Different thicknesses are available, ranging from very thin foils (e.g., 0.025mm) to thicker options for heavier applications. Purity levels vary, influencing conductivity and cost.
• Adhesive: A critical component. Common adhesive types include:
  • Acrylic: General purpose, good UV resistance, moderate temperature range.
  • Conductive Acrylic: Contains conductive particles for improved electrical contact.
  • Silicone: High temperature resistance, flexibility, good for thermal applications.
  • Double-Sided Tape: Offers strong adhesion, often used for mechanical bonding.
• Backing (Optional): Some patches include a backing material (e.g., polyimide, polyester) for ease of handling, protection, or additional insulation.

Purpose:

• Electromagnetic Interference (EMI) Shielding: Blocking or diverting electromagnetic radiation to prevent interference with sensitive electronic components.
• Grounding: Providing a low-resistance path to ground for static discharge or electrical safety.
• Thermal Management: Conducting heat away from components to prevent overheating.
• Electrical Connection: Creating conductive pathways for prototyping, repairs, or connections where soldering is impractical or undesirable.
• Electroplating: Serving as a base for selective electroplating.

Function:

Copper foil patches function by providing a conductive surface. The copper layer allows for the flow of electrical current or the transmission of heat. The adhesive ensures physical contact with the target surface. Conductive adhesives further enhance electrical contact by filling air gaps and creating a more reliable connection.

Usage Scenarios:

• Electronics Manufacturing: Shielding enclosures, grounding planes, connecting components on printed circuit boards (PCBs).
• Repair and Prototyping: Fixing broken traces on PCBs, creating temporary connections for testing.
• Automotive: EMI shielding for electronic control units (ECUs), grounding applications.
• Medical Devices: Shielding sensitive electronics, grounding for safety.
• Telecommunications: Shielding cables and enclosures.
• Static Control: Grounding mats and work surfaces to prevent electrostatic discharge (ESD).

Common Types:

• Single-Sided Copper Foil Tape: Copper layer on one side, adhesive on the other. Most common type for general shielding and grounding.
• Double-Sided Copper Foil Tape: Copper layer on both sides, with an adhesive layer in between. Used for creating conductive pathways between two surfaces.
• Copper Foil Mesh Tape: A woven copper mesh embedded in an adhesive. Provides shielding with greater flexibility and conformability.
• Stamped Copper Foil Patches: Custom-shaped patches cut from copper foil for specific applications.
• Copper Foil Discs/Squares: Pre-cut shapes for thermal management or prototyping.
• Conductive Copper Foil Tape: Copper foil with conductive adhesive for enhanced electrical contact.

Copper foil patch can be classified under several HS codes based on its composition and application. Here's a breakdown of potential classifications:

• 8544493040: This code covers insulated (including enameled or anodized) wire, cable (including coaxial cable) and other insulated electric conductors, whether or not fitted with connectors; optical fiber cables, made up of individually sheathed fibers, whether or not assembled with electric conductors or fitted with connectors: Other electric conductors, for a voltage not exceeding 1,000 V: Other: Of copper For a voltage exceeding 600 V. This is applicable if the copper foil patch is used as an electric conductor and is insulated. The basic tariff is 5.3%, with an additional 25.0% tariff, increasing to 30% after April 2, 2025, resulting in a total tariff of 60.3%.
• 8544493080: This code also covers insulated (including enameled or anodized) wire, cable (including coaxial cable) and other insulated electric conductors, whether or not fitted with connectors; optical fiber cables, made up of individually sheathed fibers, whether or not assembled with electric conductors or fitted with connectors: Other electric conductors, for a voltage not exceeding 1,000 V: Other: Other: Of copper Other. This is applicable if the copper foil patch is used as an electric conductor and is not specifically defined in other categories. The basic tariff is 5.3%, with an additional 25.0% tariff, increasing to 30% after April 2, 2025, resulting in a total tariff of 60.3%.
• 3926904000: This code covers other articles of plastics and articles of other materials of headings 3901 to 3914: Other: Imitation gemstones. If the copper foil patch is used for decorative purposes and resembles gemstones, this code may be applicable. The basic tariff is 2.8%, with no additional tariff currently, but increasing to 30% after April 2, 2025, resulting in a total tariff of 32.8%.
• 3921904010: This code covers other plates, sheets, film, foil and strip, of plastics: Other: Other: Flexible Reinforced with paper. If the copper foil patch is a flexible sheet reinforced with paper, this code may be applicable. The basic tariff is 4.2%, with no additional tariff currently, but increasing to 30% after April 2, 2025, resulting in a total tariff of 34.2%.
• 3921904090: This code covers other plates, sheets, film, foil and strip, of plastics: Other: Other: Flexible Other. If the copper foil patch is a flexible sheet not specifically defined in other categories, this code may be applicable. The basic tariff is 4.2%, with no additional tariff currently, but increasing to 30% after April 2, 2025, resulting in a total tariff of 34.2%.

It is important to determine the exact composition and intended use of the copper foil patch to select the most appropriate HS code.