A-TECH hot-sale pcb surface finish free delivery for wholesale

Company Advantages
1. There are two ways to quickly build A-TECH osp pcb finish . One is by stacking them together and cutting the openings, welding the sides and constructing the electrical and pipe networks, and the other is to cut and create all the necessary networks before you begin the stacking and positioning process.
2. The product can support both the off-grid and on-grid system. It collects and stores the sunlight during the day, and makes the power available.
3. Our perfect packaging will be conducive to the safety of pcb surface finish .

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 CIRCUITS Co., Ltd. is the best producer of pcb surface finish .
2. A-TECH CIRCUITS Co., Ltd. has accumulated rich experience and solid technical reserves.
3. It is believed by every A-TECH people that high quality is the most important factor for business success. Contact us! By implementing a sound environmental management system and executing pollution control measures, we try to avoid, reduce, and control environmental pollution from the production practices.