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A-TECH carbon immersion silver pcb finish bulk production at discount

A-TECH carbon immersion silver pcb finish bulk production 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
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.




The design processes of A-TECH lead free hasl pcb are of professionalism. These processes include recognition of its need or purpose, selection of a possible mechanism, analysis of forces, material selection, design of elements (sizes and stresses), and detailed drawing. It can support multiple devices via the interface
A-TECH lead free hasl pcb is professionally designed considering the following factors: the functionality of the control system, engineering forces, life cycle, utility, and manufacturability. The product can be applied to such scenarios as KTV, club, and conference
A-TECH lead free hasl pcb has been tested according to the general standards. It is tested in terms of functionality, strength, stiffness, wears, and corrosion. It is built to be water-resistant thanks to the stainless steel shell
The design of A-TECH lead free hasl pcb involves many considerations. They may include stress points, support points, yield points, wear resistance capacity, toughness, and friction force. Its control knob comes with easy adjustment
Before delivery, A-TECH lead free hasl pcb has to undergo a wide range of tests. It is strictly tested in terms of the strength of its materials, statics&dynamics performance, resistance to vibrations&fatigue, etc. Its cooling system made up of temperature-controlled fan can rapidly respond to dynamic environment change
The product is characterized by strong hardness. Its heavy metal materials have been treated under heat conditions and stamped with certain pressure.
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