Company Advantages
1. hasl pcb outrival other similar products due to its peelable solder mask pcb design.
2. hasl pcb has the functions such as peelable solder mask pcb , which is used in enig pcb finish .
3. We control quality of hasl pcb from raw material to every stage of production.
4. A-TECH CIRCUITS Co., Ltd. has great industrial chain competitiveness and brand influence.

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. The increasing popularity in the industry indicates that A-TECH has grown to be a more powerful company.
2. By innovating technology and optimizing service structure, A-TECH can provide customers with one-stop solutions.
3. Keeping the spirit of hasl pcb in mind is our precious enterprise culture. Contact! A-TECH has been striving to achieve to be the leading osp pcb manufacturer. Contact! The tight network of sales and service training stations of A-TECH CIRCUITS Co., Ltd. makes it easier to provide customers with more convenient services. Contact! Honesty and responsibility are crucial to the development of A-TECH CIRCUITS Co., Ltd.. Contact!