A-TECH highly-rated pcb mask cheapest factory price at discount

Company Advantages
1. A-TECH osp coating pcb is well designed. The shape of this product is carried out with the help of some advanced design tools such as the 3D-CAD design tool.
2. The product contains little or virtually zero preservatives. Some preservatives like parabens, dyes, or oils will not be easily present.
3. The product is widely used in the national defense, coal, chemical industry, petroleum, transportation, machine manufacturing, and other fields.

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 CIRCUITS Co., Ltd. is a new type of pcb mask manufacturer integrating R&D, production and sales.
2. With its strong strength and experienced engineers, A-TECH has strong capability to produce immersion tin pcb .
3. We are committed to being an environmentally responsible manufacturer. We work to improve our environmentally conscious operating and manufacturing processes. We are committed to providing exceptional service to the products we produce. Our customers place orders with confidence, knowing they will be completed accurately and on time. To us, their satisfaction is the motivating force. Get info! We work closely with our suppliers to protect the future for our natural resources and ensure economic growth for neighboring communities.