A-TECH high quality hasl pcb cheapest factory price for wholesale

Company Advantages
1. A-TECH immersion silver pcb finish is strictly tested. It has to go through various kinds of tests such as special testing for chemical resistance, aging, low-temperature performance, abrasion resistance, etc.
2. The product has good wear resistance. Yarn surface winding irregular fiber, not easy to decompose. Also, the yarn has enough friction.
3. When dressing this product, people will not think that pilling is an annoying problem. It will stay smooth after numerous times of wear and wash.

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 brand-new hasl pcb manufacturer.
2. Our factory is equipped with compatible and adaptable modern production facilities. They are perfectly suited to offer scalable manufacture, from one-off custom design products, right up to bulk production runs.
3. A-TECH CIRCUITS Co., Ltd. firmly insist on the the mission of immersion silver pcb finish . Get info! As long as our customers has problems for our osp pcb , A-TECH CIRCUITS Co., Ltd. will always be there to provide a hand. Get info!