Product Model: 6-Layer Multilayer PCB for Automotive Mainboard Base Material: KB high-performance FR-4 glass epoxy laminate Layer Structure: 6-layer multilayer PCB Solder Mask & Silkscreen: Green solder mask matched with white legend Finished Board Thickness: 1.2 mm Copper Weight: 1 oz for inner and outer layers Surface Finish: OSP (Organic Solderability Preservative) Minimum Design Rule: 3 mil (0.075 mm) trace width and 3 mil (0.075 mm) trace spacing in BGA area Key Characteristic: Automotive-grade design, fully compliant with IATF 16949 quality management system specifications Application: Automotive main control units and vehicle body control modules