Vehicle-Mounted High-Precision Navigation PCB

A 14-layer rigid-flex PCB engineered for vehicle-mounted high-precision navigation systems, integrating one stage of HDI on S1000-2M rigid material bonded to IF-2LD5018 flex laminate. Total board thickness is 1.6±0.16mm with ENIG surface finish and a minimum drilled diameter of 0.18mm to accommodate fine-pitch BGA packages used in GNSS receivers and inertial fusion processors. The rigid-flex transition allows the board to fold inside compact under-dash housings and follow non-planar enclosures without harness assemblies. Typical deployments include ADAS sensor stacks, lane-keeping units, V2X telematics modules, and high-precision positioning gateways for commercial fleets. The HDI layer provides the routing density needed for high-speed differential pairs between RF front-ends and baseband, while ENIG ensures stable solder joints under automotive thermal cycling.