A-TECH China hasl pcb finish factory at discount

Company Advantages
1. The innovative design enrichs the overall look of A-TECH . It is vacuum-sealed, which can greatly reduce the bulk of the overall cargo
2. The product can withstand market tests and customer considerations. With a solder mask, it enjoys a good electrical insulation property
3. It will not prone to deform under high temperature. Its metal structure is strong enough and the materials used have excellent creeping strength. Being laminated by advanced vacuum lamination equipment, it has a uniform dielectric thickness after lamination

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. We possess state-of-the-art operation facilities and assembly lines. The close proximity of these two advantages provides us with advantages in production lead-time and guarantee the quality of products.
2. Being socially responsible, we care for environmental protection. During production, we carry out conservation and emission reduction plans to reduce carbon footprint.