Introduction:In SMT production process, the layout of PCB and the pattern of component solder pad are very important to production efficiency and product quality. Through long-term practice, it is found that good layout and welding panel graphics can greatly improve production efficiency and product quality. Principles of Component Arrangement:The component arrangement at design time should conform to and follow the following principles.a) Principle of uniform heat distribution of welding. ...
PCBWay
Nov 19,2018
273 views
1.Schematic Diagram ( DSN or SCH format is best)2. Structure Diagram (DXF or DWG format)3.Component Datasheet ( component dimension drawing must be included, it is used for package)4. Special requirements or something we need to pay attention
Anson Bao
Apr 24,2018
1481 views
There are many different types of PCB Layouts software and tools in the market these days. If you are a student or an electronics hobbyist that are tight on budget, the information here will help you get some freeware or demo version with minimal functions for your projects. You will be able to find some low cost software as well. For most electronics hobbyist or student, one does not need to have a complicated and features rich software tools. All you need is some basic features that e...
PCBWay
Aug 21,2015
1391 views
I came across an article on PCB layout in Electronic Design magazine. It’s a pretty good article and I am glad to see the trade magazines realize we care as much about PCB layout as the bus-caching architecture of some DSP chip. The article talks about using vias to take heat away from the die-attach-paddle (DAP) of integrated circuits: “To reduce operating temperatures easily, use more layers of solid ground or power planes connected directly to heat sources with multiple vias. Establishing ef...
Karen Lin
May 05,2014
1028 views
Synchronous buck converters have gained acceptance as isolated bias supplies in communications and industrial markets. Isolated buck converters, or Fly-Buck™ converters as they are commonly called, have a coupled inductor in place of the buck converter inductor which is used to create isolated outputs in addition to the non-isolated buck output. Each isolated output only needs a winding, a rectifier diode, and an output capacitor. Multiple semi-regulated isolated, or non-isolated, outputs ...
Karen Lin
Apr 10,2014
796 views
Synchronous buck converters have gained acceptance as isolated bias supplies in communications and industrial markets. Isolated buck converters, or Fly-Buck converters as they are commonly called, have a coupled inductor in place of the buck converter inductor which is used to create isolated outputs in addition to the non-isolated buck output. Each isolated output only needs a winding, a rectifier diode, and an output capacitor. Multiple semi-regulated isolated, or non-isolated, outputs can be ...
Karen Lin
Apr 04,2014
808 views
printed circuit board (pcb) layouts are designed with help of PCB drawing software’s, commonly known as PCB Layout design software. Here we are listing you a collection of free pcb design softwares which are simple, easy to use and available for ready download. PCB design tools fall into many categories based on their development platform, pricing strategies etc. We aim to give you a mixed collection free download softwares, open source pcb design softwares, enterprise level softwares (which req...
Karen Lin
Apr 02,2014
771 views
So you are working on a DIY electronic project. You have designed your own circuit and are now ready to put all the pieces together to create your own printed circuit board (PCB). Knowledge of creating a PCB is useful and even considered an art form by some. The PCB layout can decide whether your project is a success or a failure and practicing proper design principles can save time and money. Here are some tips and tricks for building your own PCB that will ensure your project’s success. Sch...
Karen Lin
Mar 26,2014
670 views
Placing ComponentsGenerally, it is best to place PCB parts only on the top side of the board.When placing components, make sure that the snap-to-grid is turned on. Usually, a value of 0.050" for the snap grid is best for this job.First place all the components that need to be in specific locations. This includes connectors, PCB switches, LEDs, mounting holes, heat sinks or any other item that mounts to an external location.Give careful thought when placing component to PCB minimize trace lengths...
Karen Lin
Mar 24,2014
619 views
Harvey invents a device PCB that keeps a record of the telephone calls made from his phone. The design is relatively simple and is shown in Figure 15. However, PCB when it is hooked up to the phone line, radiation from the device interferes with his TV reception. Redesign Harvey's board in order to reduce the radiated EMI. You may move PCB components and/or add components, but you must use a single-sided board. We should PCB begin by identifying the potential sources and antennas. Certainly, t...
Karen Lin
Mar 24,2014
585 views
When it's time to move your circuit off the breadboard and into a practical application, you will have to design a printed circuit board, or PCB. PCB layout can be daunting for the beginner because of practical considerations like heat and unintended capacitance and resistance that are not present when designing a circuit on paper. These PCB layout tips outline some of the major factors to consider when designing a circuit board. Watch Out For Board CapacitorsThere will always be a tiny amount...
Karen Lin
Mar 11,2014
570 views
Electrical circuits for equipment such as televisions and cell phones contain printed circuit boards (PCBs). A typical PCB contains a large number of electronic components, such as resistors and electronic chips. These components are connected through copper traces on the board. Electrical currents, or signals, pass between the components through these traces. The quality of these currents or signals is often termed "signal integrity." Various factors can affect signal integrity. Signal Reflec...
Karen Lin
Mar 07,2014
548 views
Why is high-speed important? To meet the growing demand for smaller, faster, more powerful products, IC vendors deliver complex devices that require special consideration of track length, skew, impedance, noise immunity and signal integrity. Implementing these devices in your products requires an increasing knowledge of constraint-driven high-speed design techniques and an in-depth understanding of the science and technology of signal propagation. The CADSTAR high-speed design tools have been ...
PCBWay
Mar 05,2014
512 views
Now that we have a completed schematic, let’s lay out a PCB. Switch over to the PCB view using the PCB Editor button at the top of the page. This will show us our PCB. Board Size and Component Placement Let’s set our board size first. Double click in the background to open the inspector, then set the size to 1.2 inches by 1.2 inches on the Mechanical Details layer. Click save, then close the dialog. This blue outline shows the edge of our PCB. It will be used by the manufacturer to cut th...
PCBWay
Mar 05,2014
609 views
As soon as parts of your schematic begin to solidify you can start laying out your PCB. The PCB has a dependency on the logical design and schematics, so it will always be finished after the schematics are. This dependency can be a limiting factor depending on how serial your design process is. The more serial you operate, the more it will limit; the less serial and more collaborative your process, the more likely your layout will finish within days or even hours of your schematics. When you ...
PCBWay
Mar 05,2014
478 views
Fundamentally , electromagnetic compatibility testing in a dark room for an existing model is validated test . These tests are not only expensive but also time-consuming . Application early in the design process simulation software is used to reduce the cost of testing has a lot of methods. However , EMC is a complex subject , in order to realize the complexity of the current board full 3D simulation is very difficult . Because of these difficulties , the experts can focus on key areas of the bo...
PCBWay
Mar 04,2014
603 views
A good layout to optimize efficiency , reduce thermal stress and to minimize noise and line of action and go between the components . It all stems from the designer in the current conduction path for power and signal flow understanding. When a prototype power board power is first applied , the best case is that it can not only work, but also quiet , low heat. However, this situation is rare . A common problem with switching power supply is " unstable" switching waveforms . In some cases, the j...
PCBWay
Mar 03,2014
847 views
1 Introduction As market competition communications, electronic products continues to increase, the product life cycle continues to shorten, upgrade existing products and launch companies speed new products to the survival and development of enterprises play an increasingly critical role. In the manufacturing sector, how in the production of import less time to get used to manufacture higher quality and manufacture of new products has increasingly become the pursuit of insight core competitive...
PCBWay
Mar 03,2014
694 views
PCB layout is a key element of ESD protection , rational PCB design can reduce unnecessary troubleshooting and rework costs arising . PCB design , the use of transient voltage suppressing device (TVS) diodes to suppress the direct discharge of the charge injection due to ESD , so the PCB design is more important to overcome the discharge current generated by the electromagnetic interference (EMI) electromagnetic field effect . This article will provide ESD protection can be optimized PCB design ...
PCBWay
Feb 28,2014
799 views
1 Introduction With the improvement of the increasing complexity of electronic product features and performance , the frequency -density printed circuit boards and their related devices are rising, maintain and improve the speed and performance of the system has become an important issue in front of the designer . Signal frequency becomes higher , the edge becomes steeper , the printed circuit board size becomes smaller, so that the influence of wiring density increased crosstalk in high-speed ...
PCBWay
Feb 26,2014
897 views
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