A-TECH [lead free hasl pcb
undergoes curing and post-curing of epoxy resin. Post-curing is highly essential for bonding epoxy resin with a printed circuit board(PCB), meanwhile, it is also a thermal aging process for LED. 2.
The product features great sound reduction. The retractable top and the bottom seal greatly contribute to the reduction of sound. 3.
The product can stand up a certain degree of voltage. It has passed the Dielectric Withstand Test by applying high voltage on power and ground terminal circuit to measure its collapse status. 4.
This product greatly caters to the industry development and market demand. 5.
Over the years in the market, this product has received no complaints from our customers.
HASL, the full name is Hot Air Solder Leveling, it’s one of the traditional surface finish on printed circuit boards with long successful history.
To make the HASL finish, the circuit boards will be submersed in molten solder(Tin/Lead). 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.
HASL (Tin/Lead) surface finish is not RoHS Compliant, so it can be only available where RoHS exemption is permitted. The typical thickness of HASL is 1-40um, and the shelf life can reach to 12 months.
The advantages of HASL surface finish
● Excellent solderability / wettability
● Good reflow properties
● Low cost in manufacturing
● Large processing window is allowed
● Multiple thermal excursions
● Can be widely used
The disadvantages of HASL surface finish
● Uneven surface
● Not suitable for PCBs with fine pitch
● Thermal shock
● Not RoHS Compliant
● Solder bridge
● Plugged or Reduced plated through holes
A-TECH have HASL surface finish in house, it’s mainly used to build single sided or double sided PCBs with high solderability requirements but low manufacturing cost and without RoHS Compliant requirement.
A-TECH CIRCUITS Co., Ltd. is known as the backbone of the hasl pcb field. 2.
Our products are sold on an international scale, which brings consistent and attractive revenue growth. We are able to meet our underlying revenue growth target each year. 3.
Social engagement has always been an integral part of our sense of responsibility and firmly embedded in our corporate values. We will raise money and take part in some charity events. We actively assume environmental responsibility and will gear our production towards a cleaner, sustainable, and more environmental-friendly way. We have implemented a universal process to achieve our sustainability goals of reducing greenhouse gas emissions, energy consumption, solid landfill waste, and water consumption. We aim to maximize our corporate value. So we will keep on dedicating ourselves to creating valued products that will contribute to a brighter future for society.