A-TECH lead carbon pcb bulk production for wholesale

Company Advantages
1. Some geological factors are taken into consideration in the extraction of A-TECH carbon pcb . It is extracted after the R&D team investigates the structure of ore or mine rock, as well as the content of the harmful component.
2. The product is built to last. Its sturdy frame can keep its shape over the years and there’s no variation that could encourage warping or twisting.
3. The product has an amazing level of softness. It does not shrink, wrinkle or pilling as time goes by.
4. This product allows people to finish a lot of things within a short time. It can effectively make people's lives or work easier and more efficient.
5. The product offers the right solution for the home user who is looking for user-friendly and excellent swimming pool cleaning performance product.

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. gets a number of branch offices located in overseas countries.
2. A-TECH CIRCUITS Co., Ltd. has excellent high-quality research and development team and market management talents.
3. The company puts a great deal of effort into environmental safety. During production, we adhere to the principles of saving energy and generating zero pollution. In such a way, the company hopes to protect our environment. Get an offer! The firm is dedicated to implementing its goal. We will work hard to provide professional and valuable customers service delivered with a sense of warmth, passion, friendliness, and team spirit. Get an offer! Excellent customer service is what we strive for. We strive to deliver excellent product solutions and services to our customers, and we will improve ourselves through the feedback from our customers. Get an offer! We use our global scale and focus where we can make the biggest difference: sustainable manufacturing and reducing the environmental footprint of our operations.