In the field of electronic engineering, debugging (Debug) circuit boards is an indispensable part of the product development process, directly related to whether the product’s functions and performance meet the standards. In the face of complex digital circuit systems, an efficient and organized Debug process is particularly important. So how can we effectively perform its … Read more
Solder Mask: solder mask refers to the part of the board that is to be coated with green oil; because it is a negative output, the part that actually has the solder mask does not get green oil but is instead coated with tin, appearing silver-white!Paste Mask: paste mask is used during machine placement and … Read more
Long-term gradual changes will lead to significant changes. With the increasing calls for environmental protection, the surface treatment processes for PCBs are sure to undergo major changes in the future. Currently, there are many PCB surface treatment processes, the most common being Hot Air Leveling, Organic Coating, Electroless Nickel/Immersion Gold, Immersion Silver, and Immersion Tin. … Read more
1. Spacing Between SMDs The spacing between SMDs should neither be too large (which wastes PCB area) nor too small to avoid solder paste printing adhesion and difficulties in soldering repairs. The spacing can refer to the following specifications: ■ Same component: ≥ 0.3mm■ Different components: ≥ 0.13×h+0.3mm (h is the maximum height difference between … Read more
Solder Mask Layer The solder mask refers to the areas on the board where green oil is applied; since it is a negative output, the areas with solder mask actually do not have green oil but are instead coated with tin, appearing silver-white! Paste Mask Layer The paste mask is used during machine placement and … Read more
In the design and manufacturing process of electronic products, the PCB acts as a bridge connecting various electronic components. Its quality directly affects the overall performance and reliability of the product. Therefore, engineers must conduct strict inspections on the PCB to ensure that the product is flawless and can achieve optimal efficiency and performance. So, … Read more
☞ This is the 17006th article published by Metal Processing (mw1950pub). Editor’s Note The production of PCB is very complex. Taking a four-layer printed circuit board as an example, the manufacturing process mainly includes PCB layout, core board production, inner layer PCB layout transfer, core board drilling and inspection, lamination, drilling, copper chemical deposition on … Read more
PCB (Printed Circuit Board), also known as printed circuit board in Chinese, is an important electronic component and the support for electronic components. Since it is made using electronic printing technology, it is called a “printed” circuit board. Before the advent of PCBs, circuits were composed of point-to-point wiring. This method had low reliability because … Read more
When hardware engineers first encounter multi-layer PCBs, it can be quite overwhelming. With layers often reaching ten, the circuits resemble a spider’s web. Today, I created several internal structure diagrams of multi-layer PCBs, using 3D graphics to showcase various layered structures within the PCB. 01 The Core of High-Density Interconnection Boards (HDI) Lies in the … Read more
The construction of component packaging is an important part of PCB design. A small mistake can lead to the entire board failing to work and serious delays in the project.Most CAD tools come with a built-in library for standard component packaging, which can also be obtained from the manufacturer’s design documents and reference design sources. … Read more