Company Advantages
1. A-TECH hasl pcb finish is manufactured by our experienced workers who use optimum raw materials.
2. Under the strict supervision of our quality experts, the product has passed 100% conformity testing.
3. The product has many technical advantages such as long service life.
4. A-TECH CIRCUITS Co., Ltd.'s dedicated team strives to be the best in the industry.

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 R&D company with many years of experiences of researching and developing new hasl pcb products.
2. A-TECH PCB has formed a professional R&D team since its inception.
3. A-TECH CIRCUITS Co., Ltd. will respect every customer's requirement and try to do it well. Inquire! A-TECH CIRCUITS Co., Ltd. tightly holds the principles of 'customer-oriented, service-based, mutual benefit and create brilliancy'. Inquire! A-TECH CIRCUITS Co., Ltd. aims to lead immersion silver pcb industry. Inquire! A-TECH upholds the concept of the integration of hasl pcb finish and lead free hasl pcb together. Inquire!