aluminum clad pcb
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To do high-speed PCB design, you must first understand the following basic concepts, which are the foundation. 1.What is electromagnetic interference (EMI) and electromagnetic compatibility (EMC)? (Electromagnetic Interference), there are two types of conducted interference and radiated interference. Conducted interference refers to the coupling (interference) of a signal on an electrical network to another electrical…
1.How to choose PCB material? The selection of PCB material must strike a balance between meeting design requirements and mass production and cost The design requirements include electrical and mechanical parts Usually, this material issue is more important when designing very high-speed PCB boards (frequencies greater than GHz) For example, the dielectric loss of the…
I. Technical requirements of aluminum substrate The main technical requirements are: Dimension requirements, including board size and deviation, thickness and deviation, verticality and warpage; appearance, including requirements for cracks, scratches, burrs and delamination, aluminum oxide film, etc.; performance, including peel strength, surface resistivity, minimum breakdown voltage, dielectric constant, flammability and thermal resistance. Special testing methods…
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 unstable. The following is an analysis of the matters that need to be paid attention to in…
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…
This article delves into the art and science of prototype assembly, offering insights and strategies to streamline the process. Learn best practices to enhance efficiency in product development and transform your ideas into tangible prototypes effectively.
Differential lines are a very important part of signal lines in PCB design, and the signal processing requirements are also quite strict. Today, I will introduce the principle of differential signals and their processing methods in PCB design. 1.What is differential signal Differential transmission is a signal transmission technology. Different from the traditional method of…
Some substrates may absorb moisture and some of the resin may not cure well 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 hole…
In electronic system design, in order to avoid detours and save time, the requirements of anti-interference should be fully considered and met, and anti-interference remedial measures should be avoided after the design is completed. There are three basic elements that form interference: (1) Interference source, which refers to the components, equipment or signals that generate…
1.PCB surface treatment: Anti-oxidation, tin spraying, lead-free tin spraying, immersion gold, immersion tin, immersion silver, hard gold plating, full-board gold plating, gold finger, nickel-palladium gold OSP: low cost, good solderability, harsh storage conditions, short time, environmentally friendly process, good welding, flatness. Tin spraying: Tin spraying boards are generally multi-layer (4-46 layers) high-precision PCB samples, which…
This article explores the latest innovations in assembled printed circuit boards, highlighting advancements in design, materials, and manufacturing processes that enhance efficiency and performance in modern electronics.
In PCB design, before formal wiring, there are actually a lot of steps to go through. The following is the main design process: —-System Specifications First, the system specifications of the electronic device must be planned. Including system functions, cost constraints, size, operating conditions, etc. —-System Function Block Diagram Next, the system function block diagram…
Perfect fusion of circuit boards and laser welding technology. With the development of the electronics industry, the integration of circuit boards is getting higher and higher, the density of electronic devices on circuit boards is getting higher and higher, and the size of electronic devices is getting smaller and smaller. Many electronic devices cannot withstand…