A-TECH wholesale China enig pcb finish Suppliers at discount

Company Advantages
1. A-TECH is developed with a deep investigation. Its air circulation part, materials and layout of the interface with the device are all seriously considered by the R&D team. Its robust structure allows it to be used in harsh environments
2. By improving the customer service, our enig pcb finish has been more and more popular. It has high tensile strength and can be deformed without breakage
3. enig pcb finish has the functions such as as compared with other similar products. It stands out for its impact endurance performance

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 huge producer of enig pcb finish .
2. First-class production technology is acquired by A-TECH CIRCUITS Co., Ltd..
3. A-TECH CIRCUITS Co., Ltd. is a business who sticks to Customer First. Please contact us!