hot-sale pcb surface finish hard bulk production for wholesale

Company Advantages
1. A-TECH pcb surface finish is manufactured using the following tools to ensure quality. These tools include visual comparators, binocular microscopes, magnifiers, etc.
2. This product has a strong weather ability. It will not easy to lose its strength and shape when exposed to the constantly changing atmosphere.
3. The product stands out for its weather resistance. It is able to withstand exposure to the elements -- sun, rain, or wind.
4. The product is able to deliver reliable power for the device used in remote locations that are subjected to extreme environmental conditions.
5. The product can be used in places where pure water is needed, such as laboratories, food factories, electroplating factories, pharmaceutical factories, electronics factories, paper mills, etc.

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. Owning the advanced technologies, A-TECH CIRCUITS Co., Ltd. is regarded as a strong competitor in manufacturing carbon ink pcb for many years.
2. High technology is a big helper when it comes to our high quality pcb surface finish .
3. A-TECH CIRCUITS Co., Ltd. persists in the service theory of immersion tin pcb finish . Ask online! hasl pcb finish is the cardinal tenet of A-TECH CIRCUITS Co., Ltd.'s operation. Ask online! A-TECH CIRCUITS Co., Ltd. persists in the service concept of osp coating pcb . Ask online! silver coating pcb is regarded as the A-TECH CIRCUITS Co., Ltd.'s service tenet. Ask online!