highly-rated lead free hasl pcb immersion Suppliers for wholesale

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4 layers PCB with IPC CLASS3 acceptance standard

4 layers PCB with SHENGYI S1000-2

4 layers PCB with impedance control

4 layers PCB with ENIG finish

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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.

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A-TECH enig pcb finish will be tested once it's finished. It has been sprayed with different kinds of liquid for quality test and it proved that it is not affected by those liquids. This product is mainly sold to Europe and the United States

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The design of A-TECH lead free hasl pcb has taken different aspects into consideration. It is created by our designers who consider the bathroom space, style matching, and overall aesthetic appeal. With virtually zero preservatives, the product is skin-friendly

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The manufacturing technologies used in the production of A-TECH enig pcb finish are mature and advanced. The product will be crafted using the unique carve mold technology and treated with anti-yellowing and burnishing technology. This product contributes to putting on a perfect makeup for important activities

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The design of A-TECH enig pcb finish is carried out using CAD technology. The design is done by CAD technicians who can create a 3D bathroom scene where the product is placed in. It greatly boosts people's confidence in appearance

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The manufacturing of A-TECH enig pcb finish is sophisticated and requires much workmanship. The processes mainly include: raw materials inspection, sizing formula, ball milling, glaze treating, and sintering. With virtually zero preservatives, the product is skin-friendly

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A-TECH CIRCUITS Co., Ltd. There are professional raw material procurement agency partners who can purchase the required raw materials efficiently and at low prices to ensure the quality of raw materials, in addition to reasonable arrangements for the production process, improve the utilization rate of equipment, and use materials, Improvement of operating procedures, production conditions, etc., increase labor productivity, reduce labor consumption per unit of product, and at the same time establish the concept of "improving quality and reducing cost", reducing waste loss, product after-sales maintenance costs and other intangible losses, through various channels and methods Carry out scientific and standardized control of costs, reasonably save costs, reduce product market prices, and improve product cost performance under the premise of ensuring lead free hasl pcb quality remains unchanged.

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A-TECH immersion lead free hasl pcb Suppliers for wholesale