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A-TECH wholesale China peelable mask pcb company at discount

A-TECH wholesale China peelable mask pcb 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
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 CIRCUITS Co., Ltd. Standardized production is carried out in strict accordance with national standards, and the products are strictly tested with almost harsh quality control standards and inspection methods to ensure that the produced peelable mask pcb are qualified products with reliable quality.
A-TECH CIRCUITS Co., Ltd. has a modern factory building, and introduces advanced immersion silver pcb finish production equipment, and immersion silver pcb finish after the production is completed, it will be tested by the relevant national departments to meet the national quality standards, ensuring that it not only has high output, but also stable performance and high quality .
A-TECH CIRCUITS Co., Ltd. Constantly upgrade and renew production equipment and production lines, and explore technologies and processes to ensure that the overall quality of immersion silver pcb finish produced is more reliable.
A-TECH CIRCUITS Co., Ltd. has many years of production experience, exquisite production technology, strong production strength, and can produce high-quality immersion silver pcb finish.
We have a professional production management team, an independent production and processing workshop and advanced production technology, providing strong support and guarantee for the production of peelable mask pcb with reasonable structure, excellent performance, safety and reliability.
This product is internationally renowned for its superior performance and long life.
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