highly-rated immersion silver pcb silver free delivery for wholesale

Company Advantages
1. The basic materials used in A-TECH peelable solder mask pcb are canvas, rubber or high-grade plastic. The choice depends on the use, for example, indoor or outdoor. Climate too plays a significant role like places with high humidity and moisture.
2. Its fabric has a high antibacterial activity. They are cable of inhibiting the growth of many bacteria and fungi that cause odors.
3. This product is attracting attention due to its durability. It passes the durability test under extreme temperature (hot or cold), environmental pollution, excessive pressure, flow, speed, and load.
4. This product is popular for many reasons. One of the reasons is that is it is comfortable and breathable enough for people to wear, causing no allergies.
5. This one is superior when measured against the standards of like kind. In other words, the best of fabric, materials, workmanship, construction, and fits as it has. - Said one of our customers.

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.

Company Features
1. Occupying an irreplaceable position in China market, A-TECH CIRCUITS Co., Ltd. experienced in developing and manufacturing high-quality peelable solder mask pcb .
2. A-TECH CIRCUITS Co., Ltd. has a number of high-level knowledge and technical staff to help better guarantee the quality of immersion silver pcb .
3. Our love for our career drives us to fulfill our mission and pursue perfect immersion silver pcb finish . Get an offer! A-TECH adheres to the concept of customer first. Get an offer! A-TECH CIRCUITS Co., Ltd. is committed to technological innovation, ensure the quality of our products. Get an offer!