A-TECH tin pcb surface finish cheapest factory price for wholesale

Company Advantages
1. In A-TECH CIRCUITS Co., Ltd., you can have multiple choices for shapes of pcb surface finish .
2. pcb surface finish is applied to osp pcb finish for its excellent characteristics of pcb gold plating .
3. A-TECH CIRCUITS Co., Ltd. can promise good after-sales service and will tightly follow up the feedback from our customers.
4. A-TECH CIRCUITS Co., Ltd. is equipped with a very large and clean warehouse to store pcb surface finish .

Carbon Ink is typically used to create a protective contact surface for switches, sometimes few copper elements or patterns of the PCB board are used for keyboard contacts, LCD contacts and jumpers etc, to do this it’s usable to print some conductive/resistive carbon ink over those copper part, which normally are SMD pads or fingers or other typical contact patterns.

Carbon Ink printing process is screen printing like silk screen process, the carbon ink is printed in the specified location of the PCB, after oven cured and tested, formed a carbon film which with certain resistance to instead of the original resistance components. The difference is that silkscreen is only played a welding role but carbon ink has conductive performance.

The typical thickness of carbon ink is 10-50um, because the carbon ink has good electrical conductivity, so the carbon printed on the finished PCB should have a certain gap to ensure that no short circuits, usually require the min 8mil gap for Hoz copper and min 12mil gap for 1-3oz copper, and the minimum carbon line width is 12mil.

A-TECH is a capable PCB manufacturer to offer Carbon ink process, we require the data files to clearly indicate on which side of the PCB carbon is to be applied and the carbon areas must be properly indicated on specific layers with proper file naming.

Company Features
1. A-TECH CIRCUITS Co., Ltd. has been dedicated to the pcb surface finish industry for many decades.
2. A-TECH has successfully established a design center, a standard R&D department, and an engineering department.
3. Exquisite products, perfect service and preferential prices are the business objectives of A-TECH PCB . Inquiry! Providing world-class products/services/processes and exceeding customer expectations is the promise and goal of A-TECH. Inquiry! With the support of professional team, A-TECH has won much recognition. Inquiry!