A-TECH high quality immersion tin pcb bulk production for wholesale

Company Advantages
1. The manufacturing process of A-TECH immersion tin pcb covers a few major steps. It goes through board cutting, bending, welding of electric parts, PCB handling, and assembling. It is 100% produced in accordance with IPC-6012 & IPC-A-600F standards
2. The product perfectly suits the application requirements of customers and now enjoys a larger market share. It is offered with low dielectric loss
3. The substrate of this product features improved heat dissipation, greatly lowering the operating temperature. Thus, it counts a lot in extending its service life. A smooth part is added on its PTH line to reduce the roughness of through hole

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. gets a number of branch offices located in overseas countries.
2. A-TECH CIRCUITS Co., Ltd. owns a professional technical group with rich experience in immersion tin pcb industry.
3. We support sustainable management to back up our company's long-term viability. We will make our production progress to be compliant with environmental regulations or conform to sustainable policies and initiatives.