A-TECH hot-sale immersion tin pcb free delivery for wholesale

Company Advantages
1. Our focus on the details during the production makes A-TECH osp coating pcb impeccable in details.
2. The product is guaranteed to be superior in quality, stable in performance, and long in service life.
3. This product has high light color accuracy. It allows everything to look the same as its original color just like at daytime.
4. This product can lower the amount of needed electricity, providing energy bill savings and emissions reductions to homeowners and businesses.
5. One of the appeals of this product is that it is suitable for a variety of applications. Currently, it is used as homes, offices, classrooms, and even mobile farms.

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 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. A-TECH is thousands of people's first choice when they are in need of immersion tin pcb .
2. Our company has passed the quality control system to ensure the high grade of enig pcb .
3. Our business goal is to build a multinational or global brand. We are working hard to make our company more appealing to customers by offering quality products and professional services. A keen sense of customer service is an essential value for our company. Each piece of feedback from our clients is what we should pay much attention to.