Introduction to Curtain Coating Curtain coating is a highly efficient and versatile method for applying liquid coatings to various substrates, such as paper, plastic films, and metal foils. This technique involves creating a continuous, free-falling curtain of the coating material and allowing the substrate to pass through it, resulting in Read more…
What is LPI Solder Mask? Liquid photoimageable (LPI) solder mask is a photosensitive polymer coating applied to printed circuit boards (PCBs) to protect the copper traces, prevent solder bridges, and provide electrical insulation. LPI solder mask selectively covers the areas of the PCB where components will not be soldered, while Read more…
Introduction In the world of printed circuit board (PCB) manufacturing, the choice between copper defined and soldermask defined pads can significantly impact the overall quality, reliability, and manufacturability of the final product. This article will delve into the advantages and disadvantages of each approach, helping designers and manufacturers make informed Read more…
How Does Peelable Soldermask Work? Peelable soldermask is typically made of a latex-based or synthetic rubber material that is applied in liquid form and then cured to create a solid, yet flexible coating over the PCB surface. The key characteristics of PSM are: Thermal stability: Withstands high temperatures during soldering Read more…
Introduction to Solder mask dam Solder mask dam, also known as SMD or solder mask defined pads, is a feature used in the design and manufacturing of printed circuit boards (PCBs). It involves creating a small barrier or “dam” of solder mask material around the copper pads where components will Read more…
1. Cold Solder Joints Cold solder joints occur when the solder fails to melt completely or when there is insufficient heat transfer between the solder and the components. This results in a dull, grainy appearance and a weak mechanical and electrical connection. To avoid cold solder joints: – Ensure the Read more…
Why Are PCB Test Coupons Important? PCB test coupons play a crucial role in ensuring the quality and reliability of the final PCB product. By including test coupons in the manufacturing process, PCB fabricators can: Monitor Process Consistency: Test coupons help manufacturers ensure that their production processes remain consistent and Read more…
Introduction to Solder Mask and Its Importance Solder mask, also known as solder resist or solder stop mask, is a thin protective layer applied to the copper traces of a printed circuit board (PCB). Its primary purpose is to prevent solder from adhering to areas where it is not intended, Read more…
What is Electrostatic Powder Coating? Electrostatic powder coating is a popular method used for applying a protective and decorative finish to various metal surfaces. This process involves the use of a dry powder that is electrically charged and sprayed onto the surface of the metal object. The charged powder particles Read more…
Understanding the Powder Spray Process The powder spray process is a type of coating method that uses a dry powder made from finely ground particles of pigment and resin. The powder is electrostatically charged and sprayed onto the surface of a substrate, which is typically made from metal, plastic, or Read more…