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A-TECH free carbon pcb free delivery for wholesale

A-TECH free carbon pcb free delivery for wholesale

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
Quantity Needed:
Enterprise Strength
  • A-TECH is able to provide comprehensive and efficient services and solve customers' problems depending on a professional service team.
Product Comparison
A-TECH's PCB prototype has better performances in the following aspects.
Company Advantages
1. Every piece of A-TECH hasl pcb finish is born in a scientific and orderly production process.
2. For better durability and endurance, our professional engineers successfully developed carbon pcb with high quality.
3. Our carbon pcb has many usages and is widely used in hasl pcb finish .
4. Our carbon pcb keep our company more competitive in the market and promote technology of hasl pcb finish to a fast development.
5. A-TECH CIRCUITS Co., Ltd. has increased its competitiveness in carbon pcb market through strenuous efforts.

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. A-TECH CIRCUITS Co., Ltd. is a reliable manufacturer of carbon pcb in China. We earn trust because of our experience and expertise.
2. Our staff marks our differentiation among similar manufacturers. Their industry experience and personal connections give the company the expertise and access to resources to produce better products.
3. Always following the vision of immersion silver pcb , A-TECH aims to be the leading manufacturer in this industry. Get info! It has been widely recognized that A-TECH now is a specialist in pcb mask industry. Get info!
hasl pcb finish has always been commented by a positive way for its hasl pcb finish design. Mingtong has more than 7 years of floor products development experience
Motivated by different styles of design, our designers have successfully worked out fashionable pcb mask. Mingtong offers flexible packaging such as woven bag or PP/PE film packaging
A-TECH hasl pcb finish is manufactured using automation technology. Mingtong adopts durable acrylic acid, silicon PU, EPDM, etc. for production
A-TECH carbon pcb is manufactured by our experts using advanced technology with superior grade materials. Mingtong adheres to requirements of OHSMS
With the aid of our diligent staff, our carbon pcb has attracted more and more customers. Established in 2012, Mingtong has rich experience in flooring design
The product is of high quality and reliable performance. Mingtong supplies floor products that are widely used in schools, kindergartens, stadiums, etc
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