hot-sale pcb surface finish lead free delivery for wholesale

Company Advantages
1. A-TECH CIRCUITS Co., Ltd. thinks that design is the soul of pcb surface finish , so we highly value it.
2. This high-quality product is very flexible and can be adjusted to the wearer's face for long-term use.
3. This product features high hardness. The metal materials enable it to resist the influence of other objects that are much harder.
4. The product helps reduce the pollution of heavy metals, corrosive materials, and other nasty chemicals. These substances will ruin the environment.

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. After years of continuous solid development, A-TECH CIRCUITS Co., Ltd. has been known for the outstanding manufacturing ability of tin plating pcb .
2. A-TECH CIRCUITS Co., Ltd. has a lot of mature technologies and strong processing and manufacturing capabilities for pcb surface finish .
3. Our positive commitment to socially and environmentally responsible practices define the way we operate. All of our facilities employ strict energy management and waste-minimization procedures, following the principles of lean manufacturing. We are open to new ways of thinking and doing things, in order to create new possibilities for customers. We will always respond to unexpected challenges in a bold way to capture global strengths and achieve operational excellence.