highly-rated hasl lead free bulk production for wholesale

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.

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A-TECH hasl lead free will be tested once it's finished. It has been sprayed with different kinds of liquid for quality test and it proved that it is not affected by those liquids. The product is totally free of the fluorescent agent

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The design of A-TECH enig pcb finish has taken different aspects into consideration. It is created by our designers who consider the bathroom space, style matching, and overall aesthetic appeal. The brand logo can be printed on this product

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The manufacturing technologies used in the production of A-TECH hasl lead free are mature and advanced. The product will be crafted using the unique carve mold technology and treated with anti-yellowing and burnishing technology. This product is used to cover skin defects and imperfections

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The design of A-TECH hasl lead free is carried out using CAD technology. The design is done by CAD technicians who can create a 3D bathroom scene where the product is placed in. Thanks to its compact design, the product is highly portable for ladies

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The manufacturing of A-TECH enig pcb finish is sophisticated and requires much workmanship. The processes mainly include: raw materials inspection, sizing formula, ball milling, glaze treating, and sintering. Containing no harmful substances, the product is not likely to cause skin irritation such as redness and pimples

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A-TECH CIRCUITS Co., Ltd. There are professional raw material procurement agency partners who can purchase the required raw materials efficiently and at low prices to ensure the quality of raw materials, in addition to reasonable arrangements for the production process, improve the utilization rate of equipment, and use materials, Improvement of operating procedures, production conditions, etc., increase labor productivity, reduce labor consumption per unit of product, and at the same time establish the concept of "improving quality and reducing cost", reducing waste loss, product after-sales maintenance costs and other intangible losses, through various channels and methods Carry out scientific and standardized control of costs, reasonably save costs, reduce product market prices, and improve product cost performance under the premise of ensuring enig pcb finish quality remains unchanged.

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