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A-TECH OEM high quality hasl lead free company at discount

A-TECH OEM high quality hasl lead free company at discount

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
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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.




The fabrics used in A-TECH hasl lead free comply with industrial standards. Their quality meets the regulations stipulated in FZ/T 01053 and GB/T 29862. The words and sentences can be printed on this product
A-TECH hasl lead free has passed a series of quality tests. They involve fabric shrinkage rate, water repellency, resilience, colorfastness, pilling resistance, and materials ingredients. The product is environmentally friendly and can be recycled
A-TECH hasl lead free has passed various tests. They are the breathability test, down-fiber penetration resistance test, moisture management test, stretch & recovery test, etc. The product can stand up times of cleaning and washing
A-TECH enig pcb finish is manufactured under a series of processes. They are foot type collection, CAD design, materials selection, material preparation, machining, and care & repair. The product has the advantage of crack resistance
A complete furniture testing is performed on A-TECH hasl lead free. They are mechanical testing, chemical testing, flammability testing, surface resistance testing, etc. Featuring temperature resistance, it can be exposed to strong sunlight
Through the reform of details and materials of enig pcb finish, it is high performance with affordable price. The product is environmentally friendly and can be recycled
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