A-TECH wholesale China lead free hasl pcb Suppliers for wholesale

Company Advantages
1. A-TECH CIRCUITS Co., Ltd.'s raw materials actively comply with international green specifications and customer requirements. The inner layer core of the product is chemically treated for improved adhesion of the copper surface
2. For people who are someone who needs to carry their stuff for a long time, this product with ergonomically designed structure could be a great choice. The product can be resistant to corrosion
3. Its electrostatic sensitive device has high electrostatic sensitivity, meaning this device can withstand much electrostatic discharge voltage.
4. The product features heavy-duty construction. The material used for its production is characterized by sufficient resistance to gravity acting on the whole frame. With a solder mask, it enjoys a good electrical insulation property
5. This product has good thermal stability. It is not easily prone to color fading or performance changes in high-temperature environments. It can reduce the electrical signal loss and provides the highest efficiency

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. Among most of the lead free hasl pcb suppliers, A-TECH could be counted as the leading manufacturer. immersion silver pcb has mature product structure and production process.
2. The establishment of pcb gold plating team ensures efficiently the quality of immersion gold pcb .
3. A-TECH CIRCUITS Co., Ltd. attaches great importance to the improvement of design ability and creativity. Our mission is to provide our clients and employees the means to reach their maximum potential. We do that by creating world-class manufacturing environments, building innovative teams, and by making a positive impact on the communities where we operate.