hot-sale pcb mask free delivery at discount

Company Advantages
1. Good material of pcb mask makes good sale in A-TECH CIRCUITS Co., Ltd.. Its robust structure allows it to be used in harsh environments
2. People praised that it provides stability to their feet. It is able to endure many challenges, such as terrain, body weight, and all other pressures that happen during walking. It is extremely popular in the markets of Europe, North America, and Asia
3. With a process of quality control, the quality is guaranteed to be high quality.Its solder mask can be offered with green, blue, white, black, yellow, and red colors
4. By using pcb mask we produced, some troubles can be avoided. It is vacuum-sealed, which can greatly reduce the bulk of the overall cargo

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. pcb mask made by A-TECH are ideal for immersion tin pcb finish purpose.
2. For higher customer satisfaction, A-TECH will pay additional attention to the evolution of customers service. Get more info!