A-TECH tin carbon pcb bulk production for wholesale

Company Advantages
1. By virtue of lead free hasl pcb, carbon pcb is often sold out in many areas.
2. The overall performance of the product has been significantly improved after years of efforts in R&D.
3. People have no worry that it will cause any casualties even if it comes down or gets punctured accidentally.
4. The product has been regarded as a high performance engineered material as it can be used under harsh operating conditions.

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 fast developing company in the carbon pcb industry.
2. A-TECH CIRCUITS Co., Ltd. owns a professional team of technicians to keep improving our immersion tin pcb .
3. A-TECH CIRCUITS Co., Ltd. aims to make the dreams of customers and employee to become true. Contact! A-TECH CIRCUITS Co., Ltd. will continue to strive to introduce new products and strive to be in the leading position in the industry. Contact!