PCB Design Specifications for LED Switching Power Supply In any switching power supply design, the physical design of the PCB board is the last link. If the design method is not appropriate, the PCB may radiate too much electromagnetic interference, causing the power supply to work unstably. The following is an analysis of the matters…
In the eyes of some people, the work of PCB layout engineers is a bit boring. Every day, they have to deal with thousands of traces on the board, various packages, and repeat the work of pulling wires… In fact, it is not as simple as it seems. Designers have to make trade-offs between various…
Perhaps we will wonder, the substrate of the circuit board has copper foil only on two sides, and the middle is an insulating layer, so do they not need to be connected between the two sides or multiple layers of the circuit board? How can the lines on both sides be connected together to allow…
Generally, there are several reasons for copper cladding. (1).EMC. For large-area ground or power copper cladding, it will play a shielding role. Some special grounds, such as PGND, play a protective role. (2).PCB process requirements. Generally, in order to ensure the electroplating effect or lamination deformation, copper is laid on PCB layers with less wiring….
1 Surface tension The cohesive force of tin-lead solder is even greater than that of water, making the solder spherical to minimize its surface area (under the same volume, the sphere has the smallest surface area compared to other geometric shapes to meet the requirements of the lowest energy state). The effect of flux is…
Blistering is one of the more common quality defects in the production process of circuit boards. The complexity of the production process and process maintenance of circuit boards, especially in chemical wet treatment, makes it difficult to prevent blistering defects on the board surface. Based on many years of actual production experience and service experience,…
The main factor that determines the quality and positioning of a board is the surface treatment process. For example, OSP tin spraying, gold plating, and immersion gold. Relatively speaking, immersion gold is for high-end boards. Due to its good quality, immersion gold is also relatively costly. Therefore, many customers choose the most commonly used tin…
The solder mask is the soldermask, which refers to the part of the printed circuit board that is to be painted with green oil. In fact, this solder mask uses a negative output, so after the shape of the solder mask is mapped to the board, it is not the green oil solder mask that…
Some substrates may absorb moisture and some of the resin may not be properly cured when pressed into substrates. In this way, the drilling quality may be very poor due to the insufficient strength of the resin itself, and there may be a lot of drilling pollution or serious tearing of the resin on the…
Today, we will introduce three special routing techniques for PCB. The following will explain the routing of PCB LAYOUT from three aspects: right-angle routing, differential routing, and serpentine routing: 1.Right-angle routing (three aspects) The impact of right-angle routing on signals is mainly reflected in three aspects: first, the corner can be equivalent to the capacitive…
The following content of this article introduces the ten most effective design rules that electronic design engineers should keep in mind and practice when using design software for PCB layout design and commercial manufacturing. Engineers do not need to implement these laws in chronological order or relative importance; simply following them all can dramatically change…
Via is one of the important components of multi-layer PCB, and the cost of drilling usually accounts for 30% to 40% of the cost of PCB board manufacturing. Simply put, every hole on the PCB can be called a via. From the perspective of function, vias can be divided into two categories: one is used…
[First Trick] Multilayer Board Wiring High-frequency circuits are often highly integrated and have high wiring density. Using multilayer boards is not only necessary for wiring, but also an effective means to reduce interference. In the PCB Layout stage, a reasonable selection of the size of a printed circuit board with a certain number of layers…
1.What are electromagnetic interference (EMI) and electromagnetic compatibility (EMC)? (Electromagnetic Interference), there are two types of interference: conducted interference and radiated interference. Conducted interference refers to the coupling (interference) of a signal on an electrical network to another electrical network through a conductive medium. Radiated interference refers to the coupling (interference) of an interference source…
The threat of static electricity is everywhere, and the electrostatic protection of electronic components is very important During the SMT processing, electrostatic discharge can cause damage or failure to electronic components. With the increase in IC integration and the gradual reduction of components, the impact of static electricity has become more serious. According to statistics,…
We use cookies to improve your experience on our site. By using our site, you consent to cookies.
Manage your cookie preferences below:
Essential cookies enable basic functions and are necessary for the proper function of the website.
Statistics cookies collect information anonymously. This information helps us understand how visitors use our website.
Google Analytics is a powerful tool that tracks and analyzes website traffic for informed marketing decisions.
Service URL: policies.google.com (opens in a new window)
SourceBuster is used by WooCommerce for order attribution based on user source.
You can find more information in our privacy policy and privacy policy.