Copper Clad Aluminum Conductors
Copper-Clad Aluminum Foil
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CCA foil has copper cladding on an aluminum core in a thin rolled form. For transformer and inductor windings, select the foil section around the required resistance, winding space and joining method. Include edge quality, surface finish and roll format in the specification.
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Construction and specification
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| Item | Specification |
|---|---|
| Material construction | Aluminum core with copper cladding; copper proportion is expressed on a mass or volume basis |
| Product form | Foil |
| CCA flat-form platform boundary | Width up to 6 mm. Width, thickness, copper proportion, temper, corners and surface are reviewed as one profile; the width boundary does not approve every combination. |
Specification design factors
Drawing-defined specification
Geometry and performance
- Gauge, usable width and surface condition define the thin conductor layer.
- Edge quality and winding tension affect tracking and handling.
- Core size and roll build govern unwinding on the downstream equipment.
Selection and processing
Define the total foil gauge and each copper layer separately. For a roughness requirement, state Ra or Rz, the measurement method and direction. Edge burr, winding tension, bend and termination requirements need the actual coil layout.
Material and form references
Rolled strip, foil and flat wire are defined by material, temper, section and finished-part requirements. Their geometry and test methods differ from those of round wire.
Standards and product formsProduct questions
What affects foil handling and surface performance?
Gauge, usable width and edge quality influence tracking and damage during unwinding. Surface texture and cleanliness affect the downstream bond or contact. Core size, roll build and tension connect the foil to the processing equipment.
Is copper proportion the same as electrical conductivity?
No. Copper proportion describes a mass, volume or area basis. Conductivity describes electrical behavior under stated measurement conditions. The supplied construction identifies both, together with section, material condition and resistance.
Which dimensions describe foil supplied on a roll?
Specify foil gauge and usable width together with edge condition. The roll record separately identifies core size, roll outside diameter, winding direction and any joints; these are different from foil thickness.
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Prepare your inquiry
- Width, thickness and tolerances
- Edge condition, burr, surface and roll dimensions
- Core and outer-layer metals, each layer or ratio, and mass or volume basis
- Surface finish or coating, joining method and inspection requirements
- Quantity, spool or coil format, packaging and delivery destination