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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.

k******h

A-TECH osp pcb has passed various tests before it reaches the customer. It has to undergo a visual inspection, continuity test, insulation resistance test, and leakage test. This product has been certified under FCC, CE, PSE, and RoHS

e******x

A-TECH hasl pcb finish is carefully designed. It is carried out by our design team who understands the complexities of countertop design and space availability. This product is easy to use with a range of features transmitted via a single connector

k******f

A-TECH hasl pcb finish will be packaged in an all-around protective way. The board pieces are required to be packed with cushions to reduce impact, and the four corners of the door frame are demanded to be packed with thick corrugated paper. Its third shielding layer ensures maximum avoiding of EMI and RFI

i******y

The production of A-TECH osp pcb complies with international manufacturing standards. Thus, the use of toxic bleaches, dyes, and other chemicals is limited. This product features high-speed endurance and compatibility

q******r

A-TECH osp pcb conform to a variety of security standards for the electric appliance. Its water-proof, anti-vibration, moisture-resistant, and impact-resistant performance all meet relevant requirements. The pure copper conductors ensure the speed of the data

c******v

osp pcb has the advantages of low-price and simple-structure, so are particularly suit for hasl pcb finish. The pure copper conductors ensure the speed of the data

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A-TECH free osp pcb bulk production for wholesale