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highly-rated immersion silver pcb hard free delivery at discount

highly-rated immersion silver pcb hard free delivery at discount
  • highly-rated immersion silver pcb hard free delivery at discount

highly-rated immersion silver pcb hard free delivery at discount

The unique function of immersion silver pcb is well received by the customers. Lepu seal is extreme corrosion resistance
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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.




tin plating pcb with tin plating pcb features is unlikely to be a best-seller. Lepu has strict requirements in the production process
As the most saleable tin plating pcb, it contributes to the design of tin plating pcb. Hydraulically balanced seal face technology reduces power consumption
The high performance of immersion silver pcb is primarily due to its tin plating pcb design. During the operation, Lepu seals enjoy higher precision
Different specifications of tin plating pcb can be chosen by our customers. Lepu seals enjoy low maintenance costs
tin plating pcb's structure has been developed using tin plating pcb idea. Lepu seal is 100% replacement as original
Product quality meets industry standards and has passed international certification.
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