hot-sale pcb mask bulk production at discount

Company Advantages
1. The quality control of A-TECH silver coating pcb begins with the selection of its components or parts. All of the components must go through chemical spraying soak tests, including, salt spray, acid and alkali pickling, and corrosive liquid dipping test. It has increased power densities which guarantee its long service life
2. Having been tested strictly before shipping, the pcb mask produced by A-TECH is of high reputation for its high quality. Its robust structure allows it to be used in harsh environments
3. We adopt statistical quality control technology to ensure stable product quality. The product is certified under UL(E357001) and RoHS

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. The hard work of well-trained and motivated staff and the use of state-of-the-art manufacturing machines make our production process extremely efficient.
2. A-TECH CIRCUITS Co., Ltd. aims to be become a bench marking enterprise in the pcb mask industry. Ask!