A-TECH highly-rated immersion silver pcb bulk production for wholesale

Company Advantages
1. The designing for A-TECH tin plating pcb is exquisite. It reflects a strong craft tradition that is focused on utility and coupled with a human-centred design approach.
2. The product has passed the electro-static discharge test (ESD), meaning it has a protection system to withstand instantaneous high current.
3. It creates promising development prospects.

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. After years of constant efforts, A-TECH CIRCUITS Co., Ltd. has been a strong enterprise.
2. Over the years, we have developed a strong market development ability. We have expanded many overseas markets including America, Australia, and Germany as our main targeting markets.
3. Since entering the foreign market, A-TECH CIRCUITS Co., Ltd. has been sticking to high standards. Inquire! A-TECH is committed to the success of each customer throughout our life cycle. Inquire!