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China enig surface free for business at discount

China enig surface free for business at discount

Shelf Life
6 Months
RoHS Compliant
Additional Cost
Supply Capacity
5000 ㎡/Month
UL, ISO9001, TS16949
Payment Terms
T/T, Paypal, WU etc.
Shipment Terms
EXW, FOB, DDU etc.
Test Way
100% E-Test
Get Latest Price
Get the latest price
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Product Information of China enig surface free for business at discount
Company Advantages
1. Right material is extremely critical for the production of enig surface. With a compact design, it is space-saving
2. A-TECH has been very popular for its good quality assurance. It is characterized by high thermal conductivity and good heat dissipation
3. enig pcb finish makes enig surface to be able to process tasks comprehensively and efficiently. It has increased power densities which guarantee its long service life
4. enig surface is considered as the most promising enig pcb finish for enig pcb finish . Its working panel is coated with a photo-sensitive epoxy-based ink, which can ensure its insulation resistance

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.

Company Features
1. Since established, A-TECH CIRCUITS Co., Ltd. has been working as a trusted manufacturer offering high-quality products such as enig pcb finish . By cause of professional ability to develop enig surface, the quality can be assured completely.
2. In personnel training, A-TECH CIRCUITS Co., Ltd. has plenty of technology-oriented R&D team for enig plating .
3. Our enig black pad is independently developed and reach the world's advanced level. A-TECH CIRCUITS Co., Ltd. adheres to the idea that quality is above everything else. Inquire now!
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