Company Advantages
1. A-TECH hard gold pcb is developed by team of professionals by using the high grade material and modern technology as per with market prevalent norms.
2. This product has no electrical safety problem. A built-in protection system on the board helps avoid electric leakage.
3. Instead of illuminating in all directions, this product emits light in one specific direction only. This prevents energy wastage and also keeps the surrounding cool.
4. It is popular with a variety of customers in the industry.

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. With rich experience in production of pcb mask, A-TECH CIRCUITS Co., Ltd. is a pioneer in this industry.
2. A-TECH CIRCUITS Co., Ltd.'s technology capability is in line with advanced level.
3. A-TECH CIRCUITS Co., Ltd. sincerely hopes our osp pcb can bring great value to our customers. Check now! The combination of hard gold pcb and tin plating pcb can create perfect quality. Check now! A good image of A-TECH springs from the good quality of carbon pcb , as well as the service to customers. Check now!