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highly-rated hasl pcb finish carbon for business at discount

highly-rated hasl pcb finish carbon for business at discount
  • highly-rated hasl pcb finish carbon for business at discount

highly-rated hasl pcb finish carbon for business at discount

The manufacture of A-TECH immersion tin pcb finish complies with some basic garment standards. These standards are GB Standards, European Standards, AATCC, ASTM, and ISO. The product utilizes laser engraving technology, which makes it more durable
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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.




A wide variety of manufacturing machines are applied in A-TECH immersion tin pcb finish production. They are mainly spreading machine, cutting machine, hemming machine, needle detector, sewing machine, flatlock machine, ironing machine (or electric/steam iron), etc. The product is manufactured based on highly innovative ideas
Basic tests have been performed on A-TECH hasl pcb finish. These tests include colorfastness testing, abrasion resistance testing, dimensional stability testing, breathability testing, etc. The product is provided by the rapid air transportation of DHL or UPS
The quality inspections of A-TECH immersion tin pcb finish cover different aspects. These inspections include thickness tolerance, flatness, thermal stability, anti-bending capability, and colorfastness. It is very smooth on the surface with a perfect texture
During the design of A-TECH hasl pcb finish, various factors have been thought of. They cover physical stress point, comfort level, impact imposed on the feet, and arch support. Materials of the product are environmentally friendly
The manufacture of A-TECH hasl pcb finish uses various types of technical equipment. They are laser cutters, digital printers, computerized knitting machines, sophisticated prototype systems, etc. The product has the advantage of rust protection
The performance of hasl pcb finish is almost the same as overseas similar product performance. The product is provided with both OEM and ODM service available
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