A-TECH hot-sale immersion silver pcb finish at discount

Company Advantages
1. hasl pcb is characterized by delicate design, logic structure and good immersion silver pcb finish performance. It has passed AOI which ensures there will be no errors or welding defects
2. No burrs or sharp corners. This product has delicate workmanship and has no quality problem. - One of our customers said. Its solder mask can be offered with green, blue, white, black, yellow, and red colors
3. The product is less likely affected by a high vibration environment. All its electrical parts and components are integrated to resist impacts. Being laminated by advanced vacuum lamination equipment, it has a uniform dielectric thickness after lamination
4. This product is of fine workmanship. The edge banding is fine and smooth with excellent hand feeling, and the line of symmetry is straight. It stands out for its impact endurance performance

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. We have a number of full and part-time direct production, engineering, management, and support personnel. Those in the direct production area operate three shifts, seven days a week.
2. A-TECH always puts the adherence to the core concept of immersion silver pcb finish and tin plating pcb as the core values the first. Please contact.