5U Immersion Gold High TG PCB 370HR FR4 Copper Clad Board

Gold fingers are the connection points between memory modules and memory slots, serving as signal transmission channels. These gold-plated conductive contacts are arranged like fingers, hence the name. The gold plating provides superior oxidation resistance and conductivity, though tin plating is now commonly used for cost efficiency.

Gold fingers (or edge connectors) are inserted into connector card slots, creating external connections for the PCB. The gold plating ensures reliable conductivity and durability, though high-performance applications may still use gold plating for superior performance.

• Excellent heat dissipation (3-4 times better than standard FR-4)
• Superior thermal and insulation reliability
• Enhanced processability with low Z-CTE

High TG PCBs (glass transition temperature above 150°C) are engineered for elevated temperature environments. These specialized boards maintain structural integrity at higher temperatures than standard PCBs (130-140°C), making them ideal for power electronics, automotive, aerospace, and industrial applications.

Manufactured with thermally stable materials like advanced FR-4 or polyimide, high TG PCBs feature improved thermal stability, reduced thermal expansion, and enhanced mechanical strength. Specialized manufacturing processes ensure reliable performance under thermal stress.