Company Advantages
1. A-TECHenig pcb is with carefully finished details and quality design that suits international tastes.
2. The complete adoption of osp pcb finish structure for enig pcb ensures the hard gold pcb .
3. enig pcb 's quality is stable and reliable.
4. The product has a huge impact on the environment. With its enhanced low energy consumption, it contributes to the reduction of carbon emission.
5. From the perspective of manufacturers, it will increase the productivity of all factors of production like land, labor, capital, etc.

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 an international company with rich experience in osp pcb finish design.
2. enig pcb is widely recognized for its high quality.
3. The service concept of hard gold pcb has been established in A-TECH CIRCUITS Co., Ltd.. Get price! To establish the service creed of lead free hasl pcb is the base of A-TECH CIRCUITS Co., Ltd.'s work. Get price!