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A-TECH A-TECH hasl coating free delivery for wholesale

A-TECH A-TECH hasl coating free delivery for wholesale

Thickness
≥1.0um
Shelf Life
6 Months
Solderability
Good
RoHS Compliant
Yes
Additional Cost
Yes
Supply Capacity
5000 ㎡/Month
Certifications
UL, ISO9001, TS16949
Payment Terms
T/T, Paypal, WU etc.
Shipment Terms
EXW, FOB, DDU etc.
Test Way
100% E-Test
Standard
IPC CLASS 2 / CLASS 3
Price
Get Latest Price
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Quantity Needed:
Pieces
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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.




A-TECH hasl coating must go through these following production stages, including metal materials procurement and preparation, components machining, surface polishing, and assembly. This product can keep the packaged contents safe and secured
A-TECH hasl coating has been tested according to the general standards. It is tested in terms of functionality, strength, stiffness, wears, and corrosion. It has been widely exported to Taiwan, the USA, Europe, Southeast Asia, and the Middle East
A list of factors is taken into account of A-TECH enig pcb finish conception. They involve complexity, feasibility, optimization, tests, etc. of a machine. The product has a super clear backing to show the brand logo
Lots of factors are taken into consideration in A-TECH enig pcb finish design. They are required motion, required space, speed of operation, required labor, etc. It has been widely exported to Taiwan, the USA, Europe, Southeast Asia, and the Middle East
There are many factors being considered during A-TECH hasl coating design. They include the selection of material, form and size of the parts, frictional resistance and lubrication, and safety of the operator. It has been certified under REACH and RoHS
It has the proper size in consideration of the force. Each element of this product is designed with the most suitable size by considering the force acting on it and the permissible stresses for the material used. This product is easy to tear off by hand
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