high quality pcb mask for business at discount

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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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HAL(Lead Free), the full name is Hot Air leveling with Lead Free. Compared with HASL, the main difference for HAL(Lead Free) is the element of material which do not contain Lead(Pb), so it’s RoHS Compliant and it’s much more popular and widely used in PCB manufacturing.

HAL(Lead Free) requires higher run temperatures for lead free solder and longer contact time, the production cost for HAL(Lead Free) is slightly higher than HASL(Tin/Lead).

The manufacturing process of HAL(Lead Free) is similar to HASL(Tin/Lead), the circuit boards will be submersed in molten solder(Lead Free). 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.

The typical thickness of HAL(Lead Free) is 1-40um and the shelf life is 12 months.

The advantages of HAL(Lead Free) surface finish

● Good solderability / wettability
● RoHS Compliant
● Good reflow properties
● Large processing window is allowed
● Multiple thermal excursions
● Can be widely used

The disadvantages of HAL(Lead Free) surface finish

● Uneven surface
● Not suitable for PCBs with fine pitch
● Thermal shock
● Solder bridge
● Plugged or Reduced plated through holes

A-TECH have HAL(Lead Free) surface finish in house, It’s basically the highest proportion of finish used for circuit boards without fine pitch or high density layout. We don’t have any additional cost for HAL(Lead Free) surface finish.

i******n

A-TECH CIRCUITS Co., Ltd. Always put product quality first, not only select high-quality raw materials and use advanced production technology to manufacture enig pcb finish, but also set up a professional quality inspection team to strictly monitor each production link and each production process, To ensure that the enig pcb finish produced are of high quality.

j******c

A-TECH CIRCUITS Co., Ltd. Introduce and learn from foreign advanced production methods, improve it in combination with its own conditions, develop a production method that is both in line with the company's conditions and efficient, and apply it to the production of pcb mask, so that pcb mask not only has high output, Moreover, it is durable, has a long service life, and has a certain quality guarantee.

w******z

The company has been engaged in the production and sales of enig pcb finish for many years, and has accumulated rich experience in production and management. The products produced are thick in materials, fine in workmanship, high in quality, beautiful and practical.

a******k

The company has been engaged in the production and sales of pcb mask for many years. It not only has advanced production and quality inspection equipment, but also has established a scientific quality inspection system.

u******n

The pcb mask of A-TECH CIRCUITS Co., Ltd. uses high-quality materials, exquisite workmanship, scientific structure, advanced design concept, and the finished product has the advantages of high precision, good durability, and high economic value.

a******d

Its quality has been well controlled by strictly conducting quality control system. Through hardening treatment, it is sturdy enough

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A-TECH high quality pcb mask for business at discount