highly-rated immersion gold pcb carbon free delivery at discount

Company Advantages
1. A-TECH immersion gold pcb has been tested by the third-party testing organization. For example, it has passed fiber composition analysis, dimensional stability testing, shrinkage testing, stain resistance testing, and seam bursting testing.
2. immersion gold pcb is an enig pcb finish for this purpose due to its characteristics of carbon ink pcb .
3. Years of application of immersion gold pcb proves the good performances and the good application effect of it.
4. It demonstrates the ultimate combination of craftsmanship and sophistication, designed to ensure a high quality sleep quality experience.
5. This product will finally contribute to the improvement in production efficiency. Because it can effectively eliminate human error during operation.

HASL, the full name is Hot Air Solder Leveling, it’s one of the traditional surface finish on printed circuit boards with long successful history.

To make the HASL finish, the circuit boards will be submersed in molten solder(Tin/Lead). This solder will cover all the exposed copper surfaces. Upon retraction from the solder, high pressure hot air is blown over the surface through air knives, this levels the solder deposit and removes the excess solder from the surface of printed circuit boards.

HASL (Tin/Lead) surface finish is not RoHS Compliant, so it can be only available where RoHS exemption is permitted. The typical thickness of HASL is 1-40um, and the shelf life can reach to 12 months.

The advantages of HASL surface finish

● Excellent solderability / wettability
● Good reflow properties
● Low cost in manufacturing
● Large processing window is allowed
● Multiple thermal excursions
● Can be widely used

The disadvantages of HASL surface finish

● Uneven surface
● Not suitable for PCBs with fine pitch
● Thermal shock
● Not RoHS Compliant
● Solder bridge
● Plugged or Reduced plated through holes

A-TECH have HASL surface finish in house, it’s mainly used to build single sided or double sided PCBs with high solderability requirements but low manufacturing cost and without RoHS Compliant requirement.

Company Features
1. A-TECH CIRCUITS Co., Ltd. enjoys a good reputation in domestic. We have earned years of experience in the developing and manufacturing of enig pcb finish .
2. Our immersion gold pcb is an excellent product manufactured by our highly advanced technology.
3. We have a simple business philosophy. We always work closely with clients to provide a comprehensive balance of performance and pricing effectiveness. Our ideal is to be the world's top supplier in this industry. We will put more investment in improving our R&D capabilities, and grow stronger relying on distinctive products we produce. We envision to become a time-honored top brand and take it as our mission. We keep improving our products by introducing cutting-edge technologies. We work hard to minimize the environmental impact during our production. We seek new ways to optimize our production processes by reducing waste and energy consumption.