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highly-rated pcb surface finish solder bulk production at discount

highly-rated pcb surface finish solder bulk production at discount
  • highly-rated pcb surface finish solder bulk production at discount

highly-rated pcb surface finish solder bulk production at discount

Immersion Tin, or Chemical Tin, it’s a RoHS Compliant metallic finish deposited by a chemical displacement reaction that is...
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Company Advantages
1. A-TECH enig pcb finish is designed meeting its compliance with the industry standards. Its solder mask can be offered with green, blue, white, black, yellow, and red colors
2. The product is applicable in the industry due to its promising development prospects. It can reduce the electrical signal loss and provides the highest efficiency
3. Our commitment to quality ensures that the product is always at the best quality. It has low water absorptivity in the damp environment


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 quality of our pcb surface finish still keeps unsurpassed in China.
2. A-TECH CIRCUITS Co., Ltd. has grand and ambitious ideas to become a high-end immersion tin pcb enterprise. Inquire!
During the production of A-TECH immersion tin pcb, it is manufactured under a reliable and safe environment. The treatment of glass is monitored closely to prevent any potential risks. It doesn't contain "never use" ingredients which are from the abandoned materials list of EU, Canada, and the US
During the production of A-TECH pcb surface finish, it is tested for both life and strength, which is performed at some independent testing facilities. It produces a delicate fragrance, which gives users a good mood
The design of A-TECH pcb surface finish is carried out adopting the principle of heat dissipation. This design enables it to work for a long time without affecting the light extraction rate. It is safe enough for both moms and babies
The production of A-TECH pcb surface finish is strictly controlled with necessary electrostatic protection, from the production environment and equipment to operation staff. It produces a delicate fragrance, which gives users a good mood
During the inspection process of A-TECH pcb surface finish, it adopts advanced optical testing equipment, Both light uniformity and brightness have been guaranteed. It adopts high-quality water which is assigned by EPA(Environmental Protection Agency
The performance and quality of this product is stable and reliable. The product is formulated to be caffeine-free
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