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wholesale China carbon ink pcb tin manufacturers for wholesale

wholesale China carbon ink pcb tin manufacturers for wholesale
  • wholesale China carbon ink pcb tin manufacturers for wholesale

wholesale China carbon ink pcb tin manufacturers for wholesale

A-TECH immersion tin pcb finish has been tested both under standard and extreme operating conditions. These tests cover resistance to internal and external pressure, mechanical strength and fatigue, life cycle analysis, reliability, and accuracy, etc. This product allows for easy maneuverability in tight spaces
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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.




The design of A-TECH immersion tin pcb finish follows the Unity Principle which refers to all elements of the design being in harmony, reflecting a sense of completeness. The operation of this product is designed intuitively and simple
A-TECH carbon ink pcb is produced complying with the requirements stipulated in the bathroom ware industry. It will be strictly scrutinized in terms of surface flaws, seaming quality, luster, temperature resistance capability, etc. This product features a time-saving and fast lift
The production process of A-TECH immersion tin pcb finish covers full quality inspection. It will be checked for CNC engraving, surface burnishing, polishing, and yellowing treating quality. This product ensures smooth and effortless pulling and pushing
Rigorous quality and security testing for A-TECH immersion tin pcb finish will be conducted. Throughout the production stages, its thermal circuit breaker, circuit boards, resistor, and other electrical elements are inspected using different methods and machines. This product has been certified under CE
A-TECH immersion tin pcb finish has undergone many laboratory tests prior to mass production, such as dimensional stability at high temperatures, bridge deformation and lens retention, lens size, thickness and curvature. This product has a high level of IP
The product generates minimal unwanted heat. It adopts a heat management technique to absorb and disperse the heat. This product has a high level of IP
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