Wholesale OEM enig electroless nickel immersion gold tin company for wholesale

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4 layers PCB with IPC CLASS3 acceptance standard

4 layers PCB with SHENGYI S1000-2

4 layers PCB with impedance control

4 layers PCB with ENIG finish

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Company Advantages
1. A-TECH is innovative with an improvement on production process. Its working panel is coated with a photo-sensitive epoxy-based ink, which can ensure its insulation resistance
2. A-TECH CIRCUITS Co., Ltd. is committed to providing its customers with the best enig electroless nickel immersion gold in the world, thus promoting the development of advanced technologies. It has increased power densities which guarantee its long service life
3. enig electroless nickel immersion gold is being increasingly important and widely applied because of advantages. It is widely used in different electronics industries, such as telecommunication and consumer electronics

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 an experienced and competitive Chinese manufacturer. Through the design and manufacture of high-quality , we have won the recognition of the outside world.
2. enig electroless nickel immersion gold occupies the main market by its advanced technology.
3. With introducing highly advanced machines and technology, A-TECH aims to be an outstanding peelable mask pcb manufacturer. Inquire now!

k******y

The law of heat conduction theory has been adopted in the developing of A-TECH enig electroless nickel immersion gold. It's specially made to allow the heat to be transferred from the higher temperature region to the lower temperature region. It stands out for its impact endurance performance

k******a

Many design factors of A-TECH peelable mask pcb have been taken into consideration by our designers during the preliminary stage. These factors include thermal resistance, materials, fin efficiency, and spreading resistance. It has low water absorptivity in the damp environment

o******s

The manufacturing process of A-TECH enig electroless nickel immersion gold includes profiles extruding, cutting, CNC machining, deburring, and surface treating. All of these procedures have to be inspected by the QC team to meet the highest requirements in the heat sink industry. It has increased power densities which guarantee its long service life

u******i

During the developing of A-TECH peelable mask pcb, several important factors are considered such as sink level requirements, component level requirements, system level requirements, and chassis level requirements, to achieve the optimized heat transfer effect. Its robust structure allows it to be used in harsh environments

r******y

A-TECH peelable mask pcb is developed with a deep investigation. Its air circulation part, materials and layout of the interface with the device are all seriously considered by the R&D team. Its solderable surface is protected from the oxidation

s******p

This product is rigorously tested on various parameters of quality to ensure high durability. It is lead-free and environmental-friendly and has passed SGS test

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A-TECH tin enig electroless nickel immersion gold company for wholesale