highly-rated pcb mask leveling cheapest factory price for wholesale

Company Advantages
1. Such structures of pcb mask are characterized by silver coating pcb .
2. It has a unique ability to direct specific light to a specific location. It can focus on a precise area because this product uses its energy much more effectively to deliver the light exactly.
3. Superior performance and long service life make the products competitive.
4. A-TECH CIRCUITS Co., Ltd. has been rapidly developed and recognized by the society.
5. With its mighty strength, A-TECH CIRCUITS Co., Ltd. provides all- round premium services for its clients.

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 working on the production of pcb mask for decades.
2. Our company has an excellent sales team. They are well educated and continue to learn about our products to enable diverse projects from customers worldwide.
3. From the strict control of production technology, to advanced product customization services, A-TECH CIRCUITS Co., Ltd. is committed to satisfy all its costumer. Inquire online! A-TECH CIRCUITS Co., Ltd. is firmly oriented to the world's leading position in terms of hasl pcb production. Inquire online! A-TECH CIRCUITS Co., Ltd. has always followed the founder’s policy of silver coating pcb . Inquire online! To establish the service theory of osp coating pcb is the base of A-TECH CIRCUITS Co., Ltd.'s work. Inquire online!