Company Advantages
1. The design of A-TECH hard gold pcb reflects a high end aesthetic. The product has the performance of great stability
2. A-TECH is the preferred brand of carbon pcb . It can be manufactured with a customized thickness
3. The product will not have the yellowing problem. The surface is treated with high-temperature paint up to 200 degrees which makes the color stick and fast. It totally conforms to the UL Flame Rating of 94V-0
4. The product is tough and durable. The materials used for this product are highly and chemically resistant and structurally strong.
5. This product provides a healthy cooking way. Made from 100% natural mineral materials, it contains no chemical elements or heavy metals. It stands out for its impact endurance performance

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 has been winning the carbon pcb market since its establishment. In order to become a more professional osp pcb supplier, A-TECH uses the most advanced technology and machines for production.
2. A-TECH CIRCUITS Co., Ltd. continually upgrade ourselves with the technological advancements.
3. Mastering the technology of producing enig pcb has created more benefits for A-TECH. hard gold pcb has long been a target of A-TECH CIRCUITS Co., Ltd.. Ask!