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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.

m******u

The company has always adhered to fine management for many years, and strictly controls the quality of every important link such as product design, research and development, production, testing, and delivery to ensure that the osp coating pcb produced are all qualified products that meet national standards.

q******i

As a professional and responsible hard gold pcb manufacturer, we always put product quality first, insist on using high-quality raw materials and advanced production technology to manufacture hard gold pcb, and strictly control every production process to ensure that all hard gold pcb are qualified Products, to bring reliable quality assurance to customers.

l******w

The company has always been adhering to the production concept of 'safety first, quality first', and standardized production in strict accordance with national standards. The hard gold pcb produced is fine in workmanship, high in quality, beautiful and practical.

i******q

We have a complete procurement chain and quality control system, insist on selecting high-quality raw materials to produce osp coating pcb, and strictly control every link of osp coating pcb production, and comprehensively control product quality, so that all osp coating pcb have superior quality quality.

e******u

A-TECH CIRCUITS Co., Ltd. not only has a professional production and quality inspection team, but also introduces advanced production equipment and testing equipment to ensure that the hard gold pcb produced are all high-quality products that meet the national product quality standards.

l******a

The product is fire-retardant. Some chemical treatment such as singeing is applied to burn off the surface fibers from the fabric to guarantee its low flammability.

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A-TECH solder osp coating pcb cheapest factory price at discount