Company Advantages
1. One of A-TECH’s greatest strengths and benefits offered to our clients is the ability to develop unique design.
2. Compared with normal immersion gold pcb , immersion silver pcb finish has more obvious advantages.
3. The product is tested for functionality and safety.
4. This product offers the most lighting output in exchange for the least amount of electricity it consumes, meaning that users can benefit a lot in terms of paying the electricity bills.

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.

Company Features
1. A-TECH has become a well-known brand in immersion gold pcb field.
2. A-TECH CIRCUITS Co., Ltd. is known for its solid technical foundation.
3. A-TECH is carrying out the spirit of immersion silver pcb finish , and keep pcb mask forward. Ask online! We hold the persisting view of osp pcb to guarantee the quality of the products. Ask online!