Company Advantages
1. A-TECH immersion silver pcb finish is made by adopting the world's newest production technology.
2. osp pcb have adopted immersion silver pcb finish concept. It absorbed some ideas of excellence from silver coating pcb , and have eliminated weak point.
3. osp pcb not only has the characteristics of immersion silver pcb finish , but also has significant economic benefits and a good application prospect.
4. A-TECH CIRCUITS Co., Ltd. will provide delivery and shipping rate to assist customers to make purchase plan.

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. has been always catering to the needs of society to develop higher-end osp pcb .
2. A-TECH today has mastered the high-tech method of providing higher quality pcb mask.
3. The profound enterprise culture of A-TECH is beneficial to its development. Contact! A-TECH CIRCUITS Co., Ltd. wishes to be one of the most professional and competent immersion gold pcb supplier. Contact! A-TECH CIRCUITS Co., Ltd. is confident that your need will be best satisfied. Contact!