high quality enig pcb mask cheapest factory price for wholesale

Company Advantages
1. The design and production techniques of A-TECH lead free hasl pcb are competitive in the industry.
2. enig pcb , by adopting lead free hasl pcb, is conducive to showing the uniqueness of this product.
3. Good properties of lead free hasl pcb are main advantages for pcb gold plating .
4. We tested it and we had no more leaks - so it works like the charm. So pleased with this. - Said one of our customers.
5. The product, being able to provide clean water, can reduce plastic waste by cutting people's consumption for bottle waters.

Immersion Silver, it’s also known as Immersion Ag, it’s produced by the selective displacement of the copper atoms by silver atoms on the exposed copper surface. As an improvement on HASL with more flat surface, the cost of Immersion Ag is more expensive than HASL but less expensive than Immersion Gold.

Immersion Ag is a RoHS compliant finish, and it’s compatible with surface mount, BGA and through hole components. The typical thickness of Imm Ag is 0.1-0.3um and the shelf life is 6-12 months.

The advantages of Immersion Silver

● Absolutely flat
● Good for fine pitch and SMD
● Good for press fit connector’s capability
● Excellent solderability
● Multiple heat cycles during assembly process
● It’s reworkable

The disadvantages of Immersion Silver

● Very sensitive to handling / tarnishing / cosmetic concerns – gloves must be used
● Short operating window between assembly stages
● Not recommended to use peelable masks
● Special packaging required – if packaged opened and not all boards used, it must be resealed quickly
● Reduced supply chain options to support this surface finish

A-TECH offers the surface finish of immersion silver, since this finish is much more sensitive in manufacturing and it’s more susceptible to temperature and humidity than other finishes, we use special operation standards and higher level of packing standards to ensure excellent appearance of immersion Ag.

Company Features
1. Serving as an outstanding enig pcb manufacturer, A-TECH CIRCUITS Co., Ltd. is deeply trusted by customers.
2. A-TECH CIRCUITS Co., Ltd. has successfully got several patents for technology.
3. A-TECH PCB believes that good communication is the most important of cooperation. Contact us! A-TECH CIRCUITS Co., Ltd. has always been committed to advocating a culture of cooperation and persisting in work. Contact us! A-TECH CIRCUITS Co., Ltd. will continue to create new products to boost its reputation and visibility. Contact us!