A-TECH solder hasl pcb meaning manufacturers at discount

Company Advantages
1. The surface treatment of A-TECH mainly includes degreasing, anodizing, sandblasting, painting, and laser engraving. It has to go through surface inspection to guarantee burr free. It has increased power densities which guarantee its long service life
2. This product acts as an implementing measure to cut people's carbon footprint. It can significantly reduce their emissions contribution. With a compact design, it is space-saving
3. The product plays an important role in dissipating the heat generated from the device by air cooling, fluid cooling, or other cooling mediums. It can reduce the electrical signal loss and provides the highest efficiency
4. The product has an excellent heat dissipation effect. The groove design maximizes the contact space between the device and the heat to dislodge the heat out. The product can be resistant to corrosion

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. We have trained a team of professionals in our factory. They are highly familiar with the customers' needs and dedicated to high quality production process.
2. hasl pcb meaning is the concept that we can develop. Check now!