CONDUCTOR MATERIAL
Silver-Plated Copper (SPC)
Specifications
| Short name | SPC |
|---|---|
| Family | Alloy |
| Purity | 4N copper core + 5N silver plate |
| Manufacturing process | Electroplate over OFC core, then drawn |
| Conductivity | 103 % IACS |
| Resistivity | 1.67e-8 Ω·m |
| Tensile strength | 215 MPa |
Overview
Copper conductor with a thin silver plating (typically 3–15 μm). At audio frequencies the skin effect concentrates current in the outer few microns of the conductor, so silver plating delivers most of silver’s high-frequency conductivity advantage at copper-level cost.
Typical uses
- mid-tier IEM cables
- studio microphone cables
- high-frequency interconnects