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1L Immersion Tin Circuit Board

1L Immersion Tin Circuit Board

1L immersion Tin circuit board 1. Company Profile: Uniwell circuits can reliably manufacture up to 32 layer, the material, FR4, Rogers and CEM-3 are all available for us. all pcb with these base material are at competitive prices. We also offer mixed board multilayer panels to ensure your...

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1.Product describe 

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Specification:
Layer: 2
Board Thickness: 1.5 mm
Surface treatment: immersion Tin.
Material:FR4 .
Min line width/line distance:4/4mil
Uniwell circuits offers all kind of PCBs, all of them are approved by  ISO9001, ISO14001, TS16949 and UL.

2.Company profile:
Uniwell circuits can reliably manufacture up to 40 layer, the material, FR4, Rogers and CEM-3 are all available for us. all pcb with these base material are at competitive prices. We also offer mixed board multilayer panels to ensure your prototyping costs are kept to a minimum. We are able to produce Prototype, and Medium to Large Production Runs with short lead times - 5 Days is considered normal for the majority of these jobs, and can build PCB boards for you using non-leaded surface finishes that are RoHS compliant. 

Our manufacturing capacity of the company was expanded rapidly. Double-side and multi-layer PCB (1L-32L)with high and the output is over 300, 000 square meters every month, and most of our products have been sold to the market of Europe, North America, South America and Australia. We have enjoyed good reputation among the same occupations both at home and abroad for our professional manufacturing technology, stable product quality and exquisite craftsmanship measure. 

Our products main application area is: Medical Instrumentation, Telecommunication apparatus, industry power, Automotive, Liquid crystal module, Peripherals, Computing & storage, Consumer, Networking, satellite receiver (DVB), worker person who accuse of Hi-Tech trade is it produce and design the technological service to offer. 

Until now, we won ISO9001-2000 Quality Management System authentication and all the products were passed UL certificate. Since built our office in Shenzhen, we have been expanding our overseas markets, especially tending to the Emerging markets: like South America (Brazil), and mid-east, all because of our price advantage.

Foundation of our company, we have concentrated on the craftsmanship development and made efforts to upgrade the technology level and manufacturing capacity in the professional field of PCB, OEM and finally we achieved good results. We consider every client as our gods, we can meet all our clients requirements whether the order is sizable or small or prototype.

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3.Quality system
Quality Policy:Transcendent Quality, Perfect Embodiment, Prevent Pollution, Energy Efficiency, Green Production, Continual Improvement, Customers' Satisfaction 

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4.Do you know what is immersion Tin?
Immersion Tin also has a tendency to cause whiskers and intermetallic formations. Whiskers are particularly problematic when working with fine line/spaces and part insertion, increasing the possibility of electrical shorts. Copper and Tin intermetallic formations often occur during deposition and continue to grow. This significantly shortens the shelf life of the stored parts. 

This finish has also been listed as being particularly difficult for wave soldering after assembly. w exposed to elevated temperature, the thin tin layer can often almost completely be converted to SnCu intermetallic, leaving very little tin for soldering. This issue with solderability increases after the first reflow cycle or long term storage of the PCBs.

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