hot-sale carbon pcb carbon free delivery for wholesale

Company Advantages
1. Finished in hard gold pcb material, our carbon pcb can offer many advantages.
2. Our technical team has been dedicated themselves into developing hard gold pcb for carbon pcb .
3. The product is popular in domestic and foreign market and has remarkable market potential.

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. A-TECH CIRCUITS Co., Ltd. is one of the most influential carbon pcb professional R & D, manufacturing companies.
2. The existing factory covers a large scale, with a fully automated penetration rate reaching over 50%. With such a large space, every production lines are arranged reasonably to coordinate the production.
3. Our aim is heading Total Productive Maintenance (TPM) production approach. We endeavor to upgrade the production procedures to no breakdowns, no small stops or slow running, no defects, and no accidents. We pursue environmental protection in our business. We maintain a high level of environmental awareness and have found production ways to improve environmental friendliness. Our mission is in creating value and making a difference while offering excellent services and flexibility to our customers. We accomplish our mission by living our values and are committed to aiming to achieve the highest levels of lasting value. By strictly complying with environmental obligations, we ensure that the use of energy, raw material, and natural resources are legal and environmentally friendly.