Gold Plated Edge Finger PCB Circuit Board

This edge finger PCB is a standard plug-in circuit board widely used for equipment signal docking. The exposed contact strips at the bottom adopt professional gold electroplating surface craft. A compact nickel underlayer is pre-deposited before gold coating, which greatly strengthens the bonding force of the gold layer. The thick hard gold plating effectively resists oxidation, corrosion and abrasion caused by repeated plugging, while maintaining ultra-low contact resistance to guarantee stable high-speed signal transmission without attenuation.

Pre-reserved central mounting hole and positioning notches enable quick fixed installation inside equipment housings. Internal precisely etched copper traces realize circuit signal routing. Ordinary bare copper or tin-plated PCBs easily oxidize and produce poor contact after long-term plugging, which leads to signal interruption. We integrate PCB substrate manufacturing and gold electroplating finishing as a complete process. All contact surfaces go through multi-stage cleaning and activation before electroplating to avoid missing plating or coating peeling. After plating, full electrical continuity and plating thickness inspection are carried out to ensure precise plug-in matching with corresponding female sockets. The hard gold plating layer maintains intact surface after thousands of plug cycles. When customers adjust the equipment interface structure, we only need to revise PCB layout files, and synchronously adjust electroplating parameters to match new equipment iteration demands.