Company Advantages
1. pcb mask retains the existing framework yet shows advantages in lead free hasl pcb.
2. The product is able to retain its shape. The insole, midsole, cork filling, outer sole, and heel are all manufactured to be sturdy to withstand pressure.
3. The product can meet the daily demands of the busiest kitchen without showing signs of wear thanks to its hardness.
4. This product meets even the most challenging design and installation requirements, creating the perfect individual home cinema experience, every time.

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. By offering high-quality lead free hasl pcb and professional hard gold pcb , A-TECH has the power to enter a wider market.
2. A-TECH CIRCUITS Co., Ltd. has been praised as the world's leading enterprise.
3. osp coating pcb , the New Service Idea of A-TECH CIRCUITS Co., Ltd.. Get more info! A-TECH CIRCUITS Co., Ltd. adheres to the service philosophy of silver coating pcb . Get more info! A-TECH CIRCUITS Co., Ltd. adheres to the service theory of immersion silver pcb finish . Get more info!