4-Layer HDI Rigid-Flex Board with Blind Microvias

Layer Count: 4 layers
Structure: 2 Flex + 2 Rigid
Material: (see stack-up) 94V-0, RoHS
FPC Thickness: 0.18mm+/-0.03mm
Rigid-Flex PCB Thickness: 0.5mm +/-0.15mm
Solder Mask: Green x2
Coverlay: yellow x2
Silkscreen: white x1
Unit Size: 170 x 72mm
Panel Size: 190 x 100mm/1up
Finished Copper Weight: 28/15/15/28μm
Surface Finish: ENIG (Au: 2-3μ”, Ni: 120-240μ”)
Laser Ablated Dia.: 0.1mm
Blind μVia: L1-L2
Via-in-Pad: Yes

4-Layer HDI Rigid-Flex Board Bottom Side