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immersion silver pcb finish for wholesale A-TECH

immersion silver pcb finish for wholesale A-TECH

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
E-mail:
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Product Details
A-TECH pursues perfection in every detail of Quick Turn PCB , so as to show quality excellence.A-TECH's Quick Turn PCB is commonly praised in the market due to good materials, fine workmanship, reliable quality, and favorable price.
Product Comparison
A-TECH insists on the use of high-quality materials and advanced technology to manufacture PCB Manufacturing. Besides, we strictly monitor and control the quality and cost in each production process. All this guarantees the product to have high quality and favorable price.Compared with other same kind of products in the market, A-TECH's PCB Manufacturing is equipped with the following outstanding advantages.
Company Advantages
1. A-TECH immersion silver pcb finish is made according to strict specifications established by the International Organization for Standardization (ISO) that develops and publishes international standards for just about everything.
2. The product meets the international quality standards and can withstand any rigorous quality and performance tests
3. To develop sales network, A-TECH has been also focusing on the immersion gold pcb quality assurance.


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 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.




Company Features
1. With the support of our trusted customers, A-TECH has gained more reputation in the immersion gold pcb market.
2. Skilled designers in A-TECH CIRCUITS Co., Ltd. will create product definitely catering to costumer's taste.
3. A-TECH CIRCUITS Co., Ltd. is devoted to transforming itself into a harmonious, long-lasting and immersion silver pcb finish company. Get more info! Whenever there is a need for us, A-TECH CIRCUITS Co., Ltd. will provide timely help. Get more info!
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