high quality osp pcb carbon free delivery for wholesale

Company Advantages
1. Production of A-TECH peelable solder mask pcb involves the following main steps. It must be stamped, coated, painted, dried, and polished by adavanced machines.
2. Fact says osp pcb is peelable solder mask pcb , it also possesses merits of immersion tin pcb finish .
3. Compared with other peelable solder mask pcb , osp pcb brings features of immersion tin pcb finish .
4. The product will be a safe choice for people. During the use of this product, people would not be threatened by electromagnetic radiation or electric leakage problems.

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.

Company Features
1. A-TECH CIRCUITS Co., Ltd. is one of the reliable manufacturers of peelable solder mask pcb in China. Our in-depth understanding of this industry and product have helped us achieve this distinction.
2. Strong technical strength is also a factor in ensuring the quality of osp pcb .
3. We strive for excellence. We are not satisfied with work that is "average" or "OK." We seek innovative ways to create "better" every time. In the process of manufacturing, we constantly pay emphasis on CO2 emissions, reject flows, recycling, energy use, and other environmental issues. We always adhere to the principle of running the business in good faith since establishment. Any vicious market competition, such as bidding up prices, offering inferior quality products will be seriously forbidden.