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bulk buy China pcb mask immersion Supply for wholesale

bulk buy China pcb mask immersion Supply for wholesale
  • bulk buy China pcb mask immersion Supply for wholesale

bulk buy China pcb mask immersion Supply for wholesale

HAL(Lead Free), the full name is Hot Air leveling with Lead Free. Compared with HASL, the main difference for HAL(Lead Free)...
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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.




The design of A-TECH pcb mask is simple yet practical. It adopts the designing concept of realizing minimized pool cleaning time with the least effort. The product features a large information storage capacity
A-TECH pcb mask is the fruit of several theories' application. Theories such as geology, Environics, as well as a cultural study is taken into consideration in the preliminary production stage. With imported superior raw material, the product is sturdy and stable
The design of A-TECH pcb mask is conducted based on the heat dissipation theory by the designers who aim to provide customers with a complete heat dissipation solution including the prototype, design, and production. The advanced systems of the product enable its high-efficiency and simple operation
The design of A-TECH pcb mask involves sophisticated electric knowledge. Its circuit, including main circuit, pilot circuit, and signal circuit are designed with as less as possible connecting wires. Its durability ensures its prolonged working time
A-TECH pcb mask complies with electrical safety standards. These standards include CB certificate, CCC certificate, CCA certificate, and LOVAG certificate. Its high quality and accuracy guarantee its safety usage for operators
A strict quality control system ensures that product quality meets international standards. The imported advanced components and controller ensure its stable performance
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