A-TECH high quality enig pcb bulk production at discount

Company Advantages
1. A-TECH silver coating pcb has been certified under some important certificate. These certificates mainly include the National Compulsory Product Certification (CCC), IEC Safety Standards for Electric Appliances, RoHS, and CE.
2. Our quality controllers are responsible for continuous small changes to keep production within the specified parameters and to ensure product quality.
3. The quality of the product is guaranteed by our state-of-the-art facilities and advanced technology. Its quality has passed the strict test and is examined frequently. Thus its quality has been widely accepted by the users.
4. The growth of sales strongly indicates the wider market application of the product in the future.
5. As a famous brand, A-TECH is skilled at producing enig pcb with high quality.

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 sophisticated in manufacture high quality enig pcb products.
2. We have an excellent team of customer service professionals. They are excel at effective communication with clients. They not only listen to clients' needs but also actively concern clients' feedback around current products and services, and generate ideas on how to make improvements.
3. A-TECH CIRCUITS Co., Ltd. is committed to provide satisfactory services to the clients. Get quote! We can supply a abundant of immersion silver pcb with high quality. Get quote! A-TECH has been holding the principle of serving customers in the high-end standard. Get quote!