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high quality immersion tin pcb tin bulk production at discount

high quality immersion tin pcb tin bulk production at discount
  • high quality immersion tin pcb tin bulk production at discount

high quality immersion tin pcb tin 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 tin plating pcb is quality tested in our accredited laboratories. It has passed key inspection and quality control tests such as Impact Test, Water Resistance Test, Vibration Test, Sound Insulation Test, etc. It has increased power densities which guarantee its long service life
2. People who want to adopt a new, natural lifestyle, this product is able to help them look and feel natural. It has passed AOI which ensures there will be no errors or welding defects
3. Our dedicated QC team is responsible for the final quality testing result. It can reduce the electrical signal loss and provides the highest efficiency


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. has attracted and nurtured a large number of senior technical management elites in immersion tin pcb industry.
2. A-TECH CIRCUITS Co., Ltd. aims to become a top-notch pcb surface finish brand with international influence. Contact us!
A-TECH immersion tin pcb has been tested in the sound laboratory. It complies with ASTM E90 and ISO 10140-2 for sound blocking and ASTM 423 for sound absorption. SUMWIC machines present features such as quick responding speed and high suitability
A-TECH pcb surface finish has to pass a series of tests. They include mechanical strength test, resistance to heat and fire test, overload protection test, etc. SUMWIC winding machine features strong anti-interference ability
Regarding the appearance treatment, A-TECH pcb surface finish meets the domestic quality standards for porcelain. There are no more than two flaws including glaze peels, crack, dark spot, and bubble. All SUMWIC machines are subjected to an extensive quality testing program prior to shipment
A wide range of tests for A-TECH immersion tin pcb has been conducted. These tests incorporate arc flash hazard testing, cabling testing, electromagnetic compatibility (EMC) testing, and performance testing. All SUMWIC machines are subjected to an extensive quality testing program prior to shipment
A-TECH immersion tin pcb has passed various tests conducted by the QC team. It is strictly inspected to ensure its specifications fit specific phone models. The latest synchronous winding single-chip microprocessor design is adopted by SUMWIC
It is less likely to accumulate water stains. Designed with a hydrophobic property, it can effectively drain the water away from its surface. All SUMWIC machines are subjected to an extensive quality testing program prior to shipment
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