Electroless nickel immersion gold (ENIG or ENi/IAu), also known as immersion gold (Au), chemical Ni/Au or soft gold, is a metal plating process used in the manufacture of printed circuit boards (PCBs), to avoid oxidation and improve the solderability of …

The immersion gold protects the underlying nickel from oxidation/passivation over its intended life. However, this layer is not totally impervious and it will not pass the requirements of a ‘classic’ porosity test.

2024年9月23日 · It provides two-step corrosion resistance. First, the gold layer protects the underlying nickel from oxidation and tarnishing. And then, the nickel layer, combined with the gold topcoat, provides excellent resistance to environmental degradation, making ENIG ideal for real-world examples, including automotive and industrial applications. 3.

2023年5月25日 · Electroless Nickel Immersion Gold (ENIG) is a popular surface finish used in the manufacturing of Printed Circuit Boards (PCBs). This two-layer metallic coating consists of a layer of nickel plated over the copper pads on a PCB, followed by a thin layer of gold.

2024年7月23日 · Electroless Nickel Immersion Gold (ENIG) is a two-layer metallic surface finish that includes a thin layer of gold over a layer of nickel. The gold layer provides excellent conductivity and protects nickel from oxidation.

ENIG (electroless nickel immersion gold) is a two-layer metallic surface finish that consists of a very thin layer of gold plated over a layer of nickel. Using an electroless chemical reaction, a nickel layer is first plated on copper pads.

2024年8月22日 · ENIG (Electroless Nickel Immersion Gold), also known as immersion gold (Au), chemical Ni/Au, or soft gold, is a type of surface finished for printed circuit boards (PCBs).

Electroless Nickel / Immersion Gold (ENIG) Uyemura ENIG is the industry standard for uniform mid-phos EN deposits with a topcoat of immersion gold. A unique, reduction-assisted immersion process deposits higher thicknesses – 4 to 8 μin gold – in a single step, with no corrosive replacement reaction.

2023年9月12日 · Electroless nickel immersion gold, or ENIG, is a surface finish that melds the individual, separate characteristics of nickel and gold to produce a superior finish well positioned to meet many of the most difficult aspects of modern HDI design.

2024年9月12日 · Today, the term “chemical gold” or call “immersion gold” usually refers to the ENIG (Electroless Nickel Immersion Gold) surface treatment method. One of its main advantages is that it doesn’t require the complex electroplating …