high quality enig pcb tin free delivery for wholesale

Company Advantages
1. enig pcb takes on by elegant shape to meet high demands.
2. The products meet the quality standards of many countries and regions.
3. By using the advanced testing equipment in the product, many quality problems of the product can be detected immediately, thus effectively improving the quality.
4. A-TECH CIRCUITS Co., Ltd. has long-term stable customer service.

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 a globally advanced manufacturer of enig pcb , A-TECH CIRCUITS Co., Ltd. always puts quality in first place.
2. A-TECH CIRCUITS Co., Ltd. respects talents and puts people first, bringing together a group of technical and managerial talents with extensive experience.
3. We develop and manufacture our products in a way that ensures it is safe, environmentally friendly and economical. We consciously minimize the environmental impact during the entire life cycle of our products, including recycling and disposal. Our company has an ethical marketing rule. We always do fair trade and will not initiate any vicious market competition or take part in any business activities pushing up the price. Please contact. We guarantee that peelable solder mask pcb performance meets local requirements. Please contact. We sincerely hope to establish cooperative relations with customers all over the world. Please contact.