By applying the fine-roughening treatment, both the resin adhesion and the high-frequency response, which are in the trade off relation, are at high levels.

Feature

  • Both surfaces smooth foil is subjected to the fine roughening surface treatment, and the required performances (low transmission loss, adhesion to a resin base material and heat resistance) are balanced at high levels.

Typical application

  • Information communication equipment such as the high-end router and the server.
  • Substrate for an antenna in a communication base station

Specification

Foil thickness [µm] 12

18

35

Tensile strength [MPa] 310 310 310
Elongation [%] 7 9 19
Surface roughness Rz [μm] 1.4 1.2 1.2

Copper foil list by application

Application Type Profile Manufacturing location Thickness (μm)
6 9 12 18 35 70 105~
High-frequency substrate RTF Taiwan        
VLP Taiwan          
H-VLP Taiwan          
H-VLP Japan        
H-VLP2 Japan        
Flexible printed circuit boards VLP Japan      
VLP Japan          
VLP Japan          
Package substrate Standard foil Taiwan      
VLP Japan          
VLP Japan          
High-density multi-layer circuit board Standard foil Taiwan      
VLP Japan          
Large-current substrate Standard foil Japan             ○(~210μm)