Causes of Creep Corrosion Several factors can contribute to the development of creep corrosion in PCBs: Humidity and Temperature High humidity levels and elevated temperatures can accelerate the process of creep corrosion. When moisture is present on the surface of a PCB, it can create an electrolytic solution that allows ions to move between conductive […]
What is EMI? EMI refers to the unwanted effects of electromagnetic radiation on electronic devices. It can be generated by both natural sources, such as solar flares and lightning, and man-made sources, including power lines, motors, and other electronic devices. EMI can be categorized into two main types: Conducted EMI: Interference transmitted through physical connections, […]
What is ENEPIG Plating? ENEPIG is a type of surface finish that consists of three layers: electroless nickel, electroless palladium, and immersion gold. These layers are deposited onto the copper pads of a PCB to protect the copper from oxidation and provide a reliable surface for soldering components. Layers of ENEPIG Plating Electroless Nickel (Ni): […]
Why Use Low-temp solder Paste? There are several reasons why low-temperature solder paste is used in electronics manufacturing: Avoid Damage to Heat-Sensitive Components: Some electronic components, such as certain sensors, displays, and connectors, can be damaged by exposure to high temperatures during the soldering process. Low-temp solders allow these components to be soldered without risk […]
Understanding PCB Copper Layers What are PCB Copper Layers? PCB copper layers are thin sheets of copper foil laminated onto the surface of a non-conductive substrate, typically made of fiberglass or other materials. These copper layers form the conductive pathways that allow electrical signals to travel between components on the PCB. The number and arrangement […]
What Are High Tg PCBs? A printed circuit board’s glass transition temperature (Tg) is the point at which the board transitions from a rigid, glassy state to a more flexible, rubbery state as temperature increases. Standard FR-4 PCBs made of woven fiberglass cloth with epoxy resin have a Tg around 130-140°C. Above this temperature, the […]
What is a PCB Annular Ring? A PCB annular ring, also known as a pad or land, is a circular copper area surrounding a drilled hole on a printed circuit board (PCB). These rings provide electrical connections between the components mounted on the PCB and the copper traces that carry signals across the board. The […]
What are PCB Drill Sizes? PCB drill sizes refer to the diameter of the holes that are drilled into a printed circuit board. These holes are used to mount components, create vias for electrical connections between layers, and provide mechanical support for the board. The drill sizes are typically expressed in either inches or millimeters, […]
Microvia Definition A microvia is a small, laser-drilled hole that connects the outer layer of a printed circuit board (PCB) to the inner layers. These tiny vias are essential for high-density interconnect (HDI) PCBs, which are used in various electronic devices, such as smartphones, tablets, and laptops. Microvias enable the miniaturization of electronic devices by […]
Introduction to Multi-Layer PCBs A Multi-Layer PCB, or Multi-Layer Printed Circuit Board, is a complex type of circuit board that consists of multiple layers of conductive copper foil laminated together with insulating material. These layers are interconnected through a series of drilled holes called vias, which allow electrical signals to pass from one layer to […]
