A-TECH solder mask silver factory at discount

Company Advantages
1. A-TECH enig pcb finish has been evaluated to ensure that stitching, construction, and decoration can meet the needs of customers. It is characterized by high thermal conductivity and good heat dissipation
2. One of the appeals of this product is that it is suitable for a variety of applications. Currently, it is used as homes, offices, classrooms, and even mobile farms. It can be printed with numbers, names, data codes, logos, or other specific information
3. The quality and performance of this product are backed up by qualified staff and technical knowledge. Being laminated by advanced vacuum lamination equipment, it has a uniform dielectric thickness after lamination

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. Relying on extensive experience in the design and manufacture of enig pcb finish , A-TECH CIRCUITS Co., Ltd. has been widely accepted both in the domestic and international market.
2. With a production certificate, we are authorized to manufacture and market products freely. Besides, this certificate supports the company entering into the market.
3. We have high-performance work teams. They understand and support the meaning and value of the company's mission and vision. They connect their roles and responsibilities to enhance team potential and thereby enhance company competence.