hot-sale carbon pcb leveling free delivery at discount

Company Advantages
1. Individualized design of carbon pcb has attracted many customers for now.
2. This product is somewhat chemical resistant. It has passed the chemical resistance testing for oils, acids, bleaches, tea, coffee, and so forth.
3. Users no longer have to buy paper and pens. With this product which features super durability, users can save much money on buying paper and pens.

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. owns many modern production lines to manufacture high quality carbon pcb .
2. The A-TECH R&D team has a forward-looking vision for tech development.
3. We value sustainable development. Through our manufacturing technology and our continuous study, we strive to develop human- and environment-friendly products. We prioritize customers as our major concern. We will deeply understand our target audience and analyze customer and sales metrics, so as to discover ways to create better products or marketing approaches. We are willing to make great contributions to the global environmental protection cause. We are incorporating measures to lessen the environmental impact throughout all levels of our business.