wholesale China immersion gold plating immersion manufacturers at discount

Company Advantages
1. The production of A-TECH enig pcb finish adopts the highest standards in the industry. It can reduce the electrical signal loss and provides the highest efficiency
2. A-TECH PCB has gained brand reputation and brand loyalty over the years. With a compact design, it is space-saving
3. In addition, the simple design makes immersion gold plating to be well operated. Its solder mask can be offered with green, blue, white, black, yellow, and red colors
4. All of our immersion gold plating are featured by enig pcb finish and have properties like enig pcb finish . It has increased power densities which guarantee its long service life

Immersion Tin, or Chemical Tin, it’s a RoHS Compliant metallic finish deposited by a chemical displacement reaction that is applied directly over the basis metal of the circuit board, the immersion Tin protects the underlying copper from oxidation over it’s intended shelf life, copper and tin however have a strong affinity for one another, the diffusion of one metal into the other will occur inevitably, directly impacting the shelf life of the deposit and the performance of the finish. The negative effects of tin whiskers growth are well described in industry related literature and topics of several published papers.

The typical thickness of Immersion Tin is ≥1.0UM and the shelf life is 6 months. The cost of Immersion Tin is more expensive than HASL but less expensive than Immersion Gold PCB and close to Immersion Silver. Similar to Immersion Silver, Immersion Tin is also sensitive in handling and storage, it requires PCB manufacturers to control and pack PCBs with Imm Tin more carefully.

The advantages of Immersion Tin

● Excellent flatness
● Mid range cost for lead free finish
● Good for fine pitch / BGA / smaller components
● Top choice for press fit technology
● Reworkable

The disadvantages of Immersion Tin

● Very sensitive to handling – gloves must be used
● Exposed Tin on final assembly can corrode
● Not good for multiple reflow/assembly processes
● Aggressive to soldermask – soldermask dam should be more than 5mil
● Baking prior to use can have a negative effect

A-TECH is capable of using Immersion Tin, we make the profile and electrical test before the process of Immersion Tin finish, and we use papers to separate each piece of boards to avoid scratches during package and transportation.

Company Features
1. In order to expand the trade, A-TECH has been always exploiting the international market to spread our high quality immersion gold plating . Quality speaks louder than number in A-TECH CIRCUITS Co., Ltd..
2. Our advanced machine is able to fabricate such enig pcb surface finish with features of [拓展关键词/特点].
3. With advanced technology applied in enig electroless nickel immersion gold , we take the lead in this industry. A-TECH CIRCUITS Co., Ltd. wants to acquire the international marketplace as a enig pcb finish manufacturer. Ask online!