Introduction: Generally, creating a PCB from a copy or schematic requires relatively low technical requirements, and making a quick PCB is straightforward. However, in practice, it’s important to first clarify your goals. Of course, the key is to understand the layout and routing requirements of the components used. By properly placing the components and routing…
Today’s article will focus on: PCB tombstoning, PCB tombstoning analysis, prevention, and solutions. I.What is PCB tombstoning? Tombstoning typically affects surface-mount passive components such as resistors, capacitors, and inductors. During the soldering process, one end of the component lifts off the PCB pad. PCB tombstoning: The final angle of a component can range from a…
1.Substrate: FCCL (Flexible Copper Clad Laminate) Polyamide: Kapton (12.5um/20um/25um/50um/75um): Features good flexibility, high temperature resistance (long-term operating temperature 260°C, short-term resistance 400°C), high moisture absorption, excellent electrical and mechanical properties, and good tear resistance. It also offers good weather and chemical resistance and flame retardancy. Polyester amine (PI) is the most widely used, 80% of…
With the booming PCB industry ,more and more engineers and technicians are joining the ranks of PCB design and manufacturing.However,due to the wide range of areas involved in PCB manufacturing,and the fact that a significant number of PCB design engineers(layout personnel)have no experience in or involvement in PCB manufacturing,and the fact that a significant number…
When designing a multilayer PCB ,one crucial aspect is planing the multilayer PCB stackup to achieve optimal product performance.A poorly designed substrate and inappropriate material selection can degrade the electrical performance of signal transmission,increase emissions and crosstalk,and make the product more susceptible to external nosie.These issues can lead to intermittent operation,as timing glitches and interference…
When a design has very high thermal dissipation requirements ,using an aluminum-based pcb is a very effective solution.This design is able to better transfer heat energy away from the design component,thereby controlling the project’s temperature.It is often ten times more efficient at removing heat from circuit component than an equivalent fiberglass backing.This significantly higher level…
High-speed PCB design refers to any design where signal integrity begins to be impacted by the physical characteristics of the PCB,such as layout,packaging,interconnects,and layer stackup. Furthermore,when you begin designing a board and encounter issues like delay,crosstalk,reflection,or emissions ,you enter the realm of high-speed PCB design. This focus on these issues makes high-speed design unique.You may…
As all electronics engineer must konw,PCB design plays a crucial role in design.Taking a power supply as an example ,pcb design directly impacts its EMC performance, output noise ,interference immunity,and even basic functionality .PCB routing in a power supply differs slightly differs slightly from other hardware.How should it be designed? Spacing For high voltage products,row…
PCB board dissection is crucial aspect of PCB design.However,because it involves sanding(a hazardous task）and tracing (a simple,repetitive task),many designers are reluctant to undertake this task.Many even believe that PCB board dissection is not a technical task,something that junior designers can handle with minimal training.This perception is somewhat common,but as with many tasks,there are certain techniques…
Because RF circuits are distributed parameter circuits,they are prone to skin effect and coupling effects in actual operation .Therefore ,in actual PCB design,interference radiation from these circuits is difficult to control.This includes interference between digital and analog circuits,power supply noise,and interference caused by improper grounding.Therefore,balancing the pros and cons of PCB design and finding the…
PCB(printed circuit board) are key supporting structures for electronic components,connecting them with metal conductors to enable the functionality of various electronic devices.In the early 20th century,traditional PCB manufacturing primarily involved printing each resist.However,with the rapid advancement of semiconductor technology, the demand for PCBs has skyrocketed. Modern PCBs have evolved from single-sided boards to double-sided boards,…
The PCB industry is one of the most important areas for a country’s economic growth and maintenance.However, in the past ,no one cared about the shelf life of PCBs.There are many reasons for this. Perhaps due to a lack of knowledge and resources,manufactures failed to understand the shelf life of PCBs and failed to consider…
As a PCB layout engineer,printed circuit board(PCB)design is your bread and butter.Not only must you diligently”draw the line”,but you must also maintain a holistic understanding and understand the entire process.Generally speaking,PCB design consist of three main parts：preliminary preparation,pcb design,and post-processing. I.Preliminary Preparation 1.Clarify the design goals,select the component types,confirm the overall plan,and produce a written…
Although current EDA tools are powerful,PCB design remains challenging as PCB dimensions shrink and device density increases.How can we achieve high PCB routing yields and shorten design time?This article introduces design techniques and key points for PCB planning layout,and routing.While PCB design time is shrinking,shrinking board space,increasing device density,extremely stringent layout rules,and large component are…
In the electronics manufacturing industry, PCB (printed circuit board) panel design is a key factor affecting board utilization and production costs. Efficient panel design not only reduces material waste but also improves production efficiency. This article will focus on several practical PCB panel design techniques to help you effectively improve board utilization. 1.Planning the Panel…
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