Product Model: Rogers 5880 PCB Material: Rogers 5880 Duroid substrate Layer Count: 1–24 layers Dielectric Constant: 2.2 Substrate Thickness: 0.2mm–4.8mm Copper Specification: Base copper 0.5oz, finished copper 1oz Surface Treatment: Immersion Gold Special Process: Teflon multi-layer PCB, countersink processing Application: Microwave devices, precision instruments, communication industry