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high quality lead free hasl pcb solder company at discount

high quality lead free hasl pcb solder company at discount
  • high quality lead free hasl pcb solder company at discount

high quality lead free hasl pcb solder company at discount

hard gold pcb from A-TECH CIRCUITS Co., Ltd. must be built in fine, exquisite and hard gold pcb. This non-woven variety of cloth is tear-resistant, durable and light-weight
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Immersion Tin, or Chemical Tin, it’s a RoHS Compliant metallic finish deposited by a chemical displacement reaction that is applied directly over the basis metal of the circuit board, the immersion Tin protects the underlying copper from oxidation over it’s intended shelf life, copper and tin however have a strong affinity for one another, the diffusion of one metal into the other will occur inevitably, directly impacting the shelf life of the deposit and the performance of the finish. The negative effects of tin whiskers growth are well described in industry related literature and topics of several published papers.

The typical thickness of Immersion Tin is ≥1.0UM and the shelf life is 6 months. The cost of Immersion Tin is more expensive than HASL but less expensive than Immersion Gold PCB and close to Immersion Silver. Similar to Immersion Silver, Immersion Tin is also sensitive in handling and storage, it requires PCB manufacturers to control and pack PCBs with Imm Tin more carefully.

The advantages of Immersion Tin

● Excellent flatness
● Mid range cost for lead free finish
● Good for fine pitch / BGA / smaller components
● Top choice for press fit technology
● Reworkable

The disadvantages of Immersion Tin

● Very sensitive to handling – gloves must be used
● Exposed Tin on final assembly can corrode
● Not good for multiple reflow/assembly processes
● Aggressive to soldermask – soldermask dam should be more than 5mil
● Baking prior to use can have a negative effect

A-TECH is capable of using Immersion Tin, we make the profile and electrical test before the process of Immersion Tin finish, and we use papers to separate each piece of boards to avoid scratches during package and transportation.

lead free hasl pcb materials allow for the realization of lead free hasl pcb' great quality. Rayson fabric meets specific handling and process requirements of most nonwoven applications
Our hard gold pcb is rich in modern design and delicate production. Our professional staff are on call 24 hours a day so that we can make a quick response for any emergency service
Motivated by different styles of design, our designers have successfully worked out fashionable lead free hasl pcb. Rayson nonwoven fabric is friendly to the environment
hard gold pcb outrival other similar products with its lead free hasl pcb materials. Rayson enhances customer satisfaction by continuing to improve quality management system
hard gold pcb, which adopts hard gold pcb material, has many advantages. Rayson nonwoven fabric features superior properties
A-TECH CIRCUITS Co., Ltd. takes the performance of lead free hasl pcb seriously.Rayson high-quality nonwoven fabric are provided together with the most reliable service in the industry
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