PCB Photosensitive Ink Solutions

Printing circuit boards (PCB) photosensitive ink has the same principle as photoresist, so it is also considered PCB photoresist generally. After exposure, the light-sensitive part of the PCB photosensitive ink becomes less soluble, while the unphotosensitive part can be washed away with a developer. Therefore, the circuit pattern can be transferred onto the PCB through the difference in solubility in the developer. PCB photosensitive ink is a special photoresist used to cover the copper layer printed on the circuit board. It can form a protective film on the substrate to protect the copper layer from corrosion and other damage.

Classification

As a class of photosensitive polymer electrochemical materials, PCB photosensitive inks can be classified into Dry Film Photoresists, Photosensitive Solder Resist Inks, and Wet Film Photoresists, among which photosensitive solder resist inks can be further divided into liquid photo imageable solder masks and UV curable etching resist inks. Wet film photoresist, also called photosensitive circuit ink, is a barrier layer to prevent circuit corrosion, while solder resist ink is used in the soldering process.

The Importance of Solutions

The quality of PCB photosensitive ink plays a vital role in the PCB manufacturing process. For example, poor quality PCB photosensitive ink may cause the ink to peel off the circuit board during use. The main raw materials of PCB photosensitive ink include resin, monomer, solvent, and photoinitiator (photosensitizer, photoacid generator). Each component is mixed in a certain proportion. When mixing ratios are improper and processes are inappropriate, the product quality can be negatively affected.
Therefore, the use of PCB photosensitive ink must be strictly controlled in each process to ensure that the ink meets factory standards. Furthermore, the scientificity, advancement and environmental protection of the formula determine the product quality. The mission of Alfa Chemistry is to provide customers with PCB photosensitive ink solutions that help them solve product problems and meet their needs as efficiently as possible.

Our Solutions

Alfa Chemistry provides PCB photosensitive ink solutions which include product formulation inspection, component analysis, and testing services for key properties of products. In addition, our professional technical team also provides technical support to help customers analyze product problems.

• Formulation Inspection

Determine the detailed information of the product formula via various molecular and structural analysis techniques.
Analyze existing formulated products to clarify their raw material composition, find out shortcomings or improve the formula or develop a new formula.

• Component Analysis

Analyze the trace element components and proportions of PCB photosensitive ink samples, conduct qualitative and quantitative analysis of the main components such as solvents, dispersants, pigments, defoamers, resins, and provide a list of the sample components.

• Performance Test →

Test the viscosity, fluidity, plasticity and other key properties of PCB photosensitive ink products. Check if products are compliant with IPC-840, UL standards, PCB production requirements, and hazardous substance control requirements (REACH, ROHS, low halogen).

• Problem Analysis

Analyze PCB photosensitive ink problems, including invalidate cause analysis, foreign matter source analysis, by-product exceed limit analysis, and quality issues analysis. Help customers clarify specific problems and provide corresponding solutions, which is conducive to better application of products.

Why Choose Us

For many years, Alfa Chemistry has been providing customers with solutions for lithography-related processes. Alfa Chemistry has reliable pre-sales and after-sales services, and is responsible for customers to the end. You can trust Alfa Chemistry for:

• Alfa Chemistry adopts the most rigorous quality control system to ensure the high quality of products.
• Alfa Chemistry provides targeted service based on customer needs. We'll do our best to resolve all your concerns.
• Alfa Chemistry has a core technical team with rich industry experience to provide customers with professional photoresist solutions and technical support.
• Alfa Chemistry offers flexible and targeted custom manufacturing to help our customers reduce capital and time costs.

Please kindly note that our products and services are for research use only.