Company Advantages
1. The design concept of A-TECH immersion tin pcb finish is comparatively mature in the industry.
2. In a flock of immersion tin pcb finish , immersion gold pcb has many excellent properties such as [拓展关键词.
3. Having paid much attention to the quality of immersion gold pcb , A-TECH CIRCUITS Co., Ltd. is more confident in this 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. A-TECH CIRCUITS Co., Ltd. has developed into a leading immersion tin pcb finish producer.
2. By applying independent technological innovation, the immersion gold pcb industry developed by A-TECH is more competitive.
3. A-TECH PCB will continue to develop to meet rapidly changing customer demands. Contact! We adhere to the business philosophy of quality and innovation for our branded Pcb Surface Finish. Contact! A-TECH CIRCUITS Co., Ltd. continues to increase. Contact! We believe in fostering a culture in which every employee feels respected, engaged, and able to reach their full potential. Contact!