A-TECH high quality pcb mask bulk production for wholesale

Company Advantages
1. What calls for customers' attention is that our pcb mask is produced by skillful manufacture.
2. The rigorous quality checking process guarantees customers a full range of quality product.
3. Our professional designers can provide customized design service for pcb mask.
4. Sustainability touches all aspects of A-TECH CIRCUITS Co., Ltd.'s business.

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.

Company Features
1. A-TECH CIRCUITS Co., Ltd. is a pcb mask factory that manufactures and sells all kinds of peelable solder mask pcb .
2. we have successfully developed a variety of pcb surface finish series.
3. A-TECH CIRCUITS Co., Ltd. assures that proficiency is important, but more important is quality. Contact us! A-TECH CIRCUITS Co., Ltd. strives to satisfy all needs of clients which include pres-sales service, technical support and after-sales service. Contact us! A-TECH CIRCUITS Co., Ltd. heartily adhere to the business concept of osp pcb . Contact us!