3.0mm PCBs with ENIG finish are robust and versatile circuit boards commonly used in high-reliability applications. The 3.0mm thickness provides excellent structural integrity, making these boards suitable for heavy components or high-stress environments. ENIG (Electroless Nickel Immersion Gold) surface finish offers superior flatness and uniformity, ideal for fine-pitch components and ensuring excellent solderability. This finish also provides good corrosion resistance and a long shelf life. The gold layer protects the nickel from oxidation, maintaining solderability for extended periods. These PCBs are often chosen for aerospace, military, and industrial applications where durability and performance are critical. The combination of thick substrate and high-quality surface finish ensures both mechanical strength and electrical reliability.