Company Advantages
1. With time going on, the advantages for osp pcb are more obvious and attract more customers.
2. The product has good tensile strength. Some non-toxic chemical agents such as softener are used to enhance the stretching force between fibers.
3. Translucence is its most significant feature. The product has a white and translucent surface after firing, allowing light to show through it.
4. It's a very long time since A-TECH CIRCUITS Co., Ltd. has been focused on osp pcb .
5. A-TECH CIRCUITS Co., Ltd. has taken a big jump in technology and service capacity in osp pcb field.

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. takes the leading position in the industry in terms of the production and quality of hasl pcb finish .
2. Compared with other companies, A-TECH CIRCUITS Co., Ltd. has a higher and more advanced technical level.
3. Customers can be totally assured of our quality and after-sale service for osp pcb . Contact! A-TECH CIRCUITS Co., Ltd. also do repairs and maintenance of hasl pcb . Contact! A-TECH CIRCUITS Co., Ltd. strives to satisfy all needs of clients which include pres-sales service, technical support and after-sales service. Contact!