Number of fpc soft board layers: 6L
Structure: 2R 2F 2R
Plate thickness: 0.6mm
Thickness of outer copper layer: 1/3 OZ
Thickness of inner copper layer: 1/3 OZ
Minimum hole diameter: 0.2mm
Minimum line width/line spacing: 3mil
Surface treatment: gold deposit
Product application: JBL sports headset
Process difficulty: strict impedance matching requirements