Smooth foil on both sides
VSP™ series

Minimizes surface irregularitiesthat cause
transmission loss of high-frequency signals

The higher the frequency, the more current is concentrated on the surface of the conductor, which is called the "surface skin effect.
The higher the frequency, the shallower the skin depth and the more susceptible to the surface shape.
The VSP™ series has an extremely smooth copper foil surface by controlling the copper deposition shape.
It is used in printed circuit boards for high-frequency signals, where surface smoothness of signal wiring is required to reduce transmission loss.
The demand for the VSP™ series is increasing in telecommunication network equipment as data traffic increases.

Skin effect