high quality pcb surface finish air cheapest factory price for wholesale

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.

s******z

Our enig pcb finish have a wide range of material category, taking different processes. It helps minimize downtime and maximize operational efficiency

d******v

enig pcb finish is made of high quality materials with perfect performance such as pcb surface finish. Its soft wheels prevent damage to the floor during use

d******d

The series of enig pcb finish are enig pcb finish, will bring the best result of [拓展关键词特点] for you. It can be kept on a ramp near the terminal when not in use for quick accessibility

g******g

The body of pcb surface finish is made by advanced enig pcb finish, which is enig pcb finish.

d******j

No other similar pcb surface finish has been able to equal its enig pcb finish. Aluminum materials help it reduce maintenance costs

r******t

In terms of storage and transportation, the product is great because it can easily and safely be stacked and stored. It is designed to ensure proper stacking and ultimately take up less space. It makes passenger's takeoff smooth and easy

Product Message

*Name

Phone

*E-mail

*Content