highly-rated immersion tin pcb ink cheapest factory price for wholesale

Company Advantages
1. A-TECH carbon ink pcb will go through a range of stringent quality tests. They are mainly AZO testing, flame retardant testing, stain resistance testing, and VOC and formaldehyde emission testing.
2. The product has the desired structural strength. It has gone through the tension test, which shows it is not easy to break under pressure.
3. This product has a clean surface. Its sheets have gone through surface preparation with sandblasting and priming to remove rust, dirt, contaminants, etc.
4. Our highly qualified team of professionals works in close-coordination with the customers to provide a world class range of immersion tin pcb .

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. has been active in manufacturing carbon ink pcb since founding and is one of the most veteran manufacturers in the industry.
2. With its advanced production equipment, A-TECH CIRCUITS Co., Ltd.'s production quality is up to the international standards.
3. Accurate market positioning of A-TECH allows partners to have the highest return on investment. Ask online! A-TECH CIRCUITS Co., Ltd. will showcase new images and lead new trend in the future. Ask online! The service provided by A-TECH is highly reputable in the market. Ask online!