China enig pcb hard Suppliers at discount

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4 layers PCB with IPC CLASS3 acceptance standard

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4 layers PCB with ENIG finish

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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.

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A-TECH CIRCUITS Co., Ltd. The pursuit of excellence, adhere to the use of advanced concepts, high-quality materials and exquisite craftsmanship enig pcb finish, effectively guarantee the rationality of the structure enig pcb finish and the stability of performance, the quality is trustworthy.

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After years of industry exploration, A-TECH CIRCUITS Co., Ltd. has not only accumulated rich production experience, but also mastered advanced production technology, which can realize enig pcb good and fast production, and all enig pcb have undergone strict quality inspections and meet national standards Quality inspection standards, quality is trustworthy.

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A-TECH CIRCUITS Co., Ltd. Not only has a complete procurement management system and a rigorous quality control system, but also has mastered various advanced production techniques, and is able to produce enig pcb with excellent quality.

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enig pcb Produce in strict accordance with the standards stipulated by the company and the requirements of the market to ensure that it can pass the inspection of relevant state departments and meet the national quality standards. It is a high-quality product with guaranteed quality.

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A-TECH CIRCUITS Co., Ltd. Strict checks are carried out during the supply of raw materials and the process of product production to ensure that the enig pcb produced are of reliable quality, and the appearance, function, and quality of the product are carefully inspected before the goods are sent out to ensure that the products sold The products are consistent with the product descriptions displayed by us.

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enig pcb finish is equipped with a high-quality evaporator. It can obtain heat from the air and effectively reduces the frosting speed. It can operate normally in a low-temperature environment.

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A-TECH hard enig pcb Suppliers at discount