wholesale China enig plating silver manufacturers for wholesale

Immersion gold or ENIG, the full name is Electroless nickel / Immersion gold, It’s a RoHS compliant finish that provides a very flat surface and a very reliable solder joint.

ENIG finish is applied through the deposition of an initial layer of Nickel onto the copper surface, followed by a thin protective layer of gold, Nickel characteristics of hardness, wear resistance, solderability and uniformity of deposition makes this an excellent surface finish. The thin layer of gold preserves the solderability of the finish by preventing oxidization of the highly active nickel surface.

Basically the gold thickness of ENIG is 1-5U” and the nickel thickness is 120-240U”, the shelf life of immersion gold PCB can reach to 12 months.

The advantages of immersion gold finish

● Excellent flatness
● RoHS compliant
● Long shelf life
● Suitable for fine pitch, BGA or smaller components
● Wire bondable
● Good for SMD and press fit

The disadvantages of immersion gold finish

●Expensive finish
●Black pad concerns on BGA

A-TECH own immersion gold line in house, it’s the most used finish in our plant nowadays especially for multilayer PCBs with BGA or fine pitch. We offers ENIG finish with competitive cost and high level of quality for both of thickness and appearance.

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The design of A-TECH enig pcb finish is reasonable and scientific. The combination of solar power and battery storage theory is adopted in the design to maximize the stable operation of the product.

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A-TECH enig pcb finish is manufactured by utilizing technologies. These technologies include filtration, biological and chemical processes, deionization, ion exchange, reverse osmosis, evaporation, etc.

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Before the A-TECH enig pcb finish is stored or shipped, the finishing operations and inspection remain to be performed following curing. The finishing operation trims flash or excess rubber.

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The process review of A-TECH enig pcb finish covers every step of the purchasing, manufacturing and shipping process to ensure the quality of the product can meet the highest standard in the rubber and plastic industry.

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A-TECH enig plating is developed by the state-of-the-art R&D team who owns much experience in creating hardware tools. The team always strives to create a hardware product with high technology content.

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The product has fine physical properties which are determined by the composition and the strength of the chemical bonds in its ordered internal structure.

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