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8-Layer Sunken Gold Metal Clad PCB

PCBA Specification Detail
Layer Count 8-Layer HDI Design (1+3+1 Stack-Up) with ​microvias for high-density routing
Min Line Width/Space 3.5/3.5 MIL (0.089/0.089 mm)
Board Thickness 1.60 mm ±10% (FR-4 TG150°C substrate)
Material FR-4 TG150°C (Epoxy Glass Fiber with Tg ≥150°C, high thermal stability)
Outer Copper Thickness 1 OZ (~35μm)
Inner Copper Thickness 1 OZ (~35μm)
Solder Mask Color Black (high precision, RoHS compliant)
Silk Screen Color White
Molding Process CNC (±0.05mm tolerance for complex profiling)
Surface Finish Immersion Gold 2U” (lead-free, enhanced solderability and durability)
Advanced Technology Metal Edge Banding (mechanical strength and EMI shielding)

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