News & Updates
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Before implementing design for manufacturing, it is important to understand the underlying process behind producing a physical PCB. Regardless of the various technologies present in each facility, a large majority of industry-leading manufacturers follow a specific set of steps to turn your design from a drawing in a CAD application into a physical board. In this article, we'll cover the basics that designers need to know as part of our crash course series on PCB manufacturing.
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If you compile a list of skew sources, you'll see that fiber weave-induced skew is only one entry on a long list of skew sources. We'll look at this list of possible skew sources below, and we'll see how they affect the operation of your PCB. From the list below, we'll see that some of these issues with skew are not simply solved by paying attention to the fiber weave construction in a PCB substrate.
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This track is for the engineer who understands high-speed design requirements and wants to learn design practices to help ensure signal integrity and EMC with fast digital protocols, mixed-signal boards, and high layer counts.
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We love answering questions from our readers and YouTube viewers, and one of the recent questions we received relates to EMI from switching elements in a switching regulator is "Should a cutout be placed below the inductor in a switching regulator circuit?". Despite the variations in inductors and their magnetic behavior, there are some general principles that can be used to judge the effects of placing ground near inductors in switching regulator circuits. We’ll look at some of these principles in this article
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We are happy to announce that the Altium Designer 22.6 update is now available. Altium Designer 22.6 continues to focus on improving the user experience, as well as performance and stability of the software, based on feedback from our users. Check out the key new features in the What's New section on the left side of this window!
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Find 9 mistakes in a PCB design and get added into the lucky draw to win a prize from Altium!
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Now you can assess your library’s health at a glance with the Library Health dashboard, view and share your bill of materials (BOM) and view and download PDF documents, all in your web browser. We improved the existing diff and compare features, and released a new version of MCAD CoDesigner. Register for the webinar to learn more!
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This Semi-Additive Process is an additional tool in the PCB fabricators' toolbox that enables them to provide feature sizes for trace width and spacing that are 25 microns, (1 mil) and below depending on the fabricators' imaging equipment. This provides much more flexibility to breakout out tight BGA areas and the ability to shrink overall circuit size and/ or reduce the number of circuit layers in the design. As the PCB design community embraces the benefits of this new printed circuit board fabrication technique, there are of course many questions to be answered.
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It’s no secret that component shortages have become more frequent this year. In fact, countries around the world are losing billions in revenue due to supply issues. Having the right components on hand is more crucial than ever as availability, obsolescence, counterfeit products and environmental non-compliance risks continue to grow. Fortunately, many shortages can be avoided by introducing proactive supply chain practices.
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It's no secret that software developers often use completed code fragments from other projects for quick and predictable results. The same can be done for PCB Design, there is no need to spend time rewiring schematics or laying out components on boards you’ve done before. Join us this webinar where we’ll go over how you can use your existing designs to create reusable design blocks, speeding up the design cycle for your future projects.
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Do length-tuning structures create an impedance discontinuity? The answer is an unequivocal “yes”, but it might not matter in your design depending on several factors. Applying a length-tuning structure is equivalent to changing the distance between the traces while meandering. Therefore, you will have a change in the odd-mode impedance of a single trace. The question then becomes: does this deviation in trace impedance in a length tuning structure matter?
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Over the last 20 years, electronic devices have become increasingly sophisticated. Less than two decades ago, just having a mobile phone to make calls was rare; today, our phones power our lives. To meet the growing demand for smartphone technology, technology has become faster, more functional, and intuitive. Improvements to the component base have streamlined processes while reducing manufacturing costs.
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Going deeper into crosstalk, there is always the issue of verifying EMI/EMC compliance through test and measurement. With the multitude of signal integrity problems that can arise in real PCBs, how can the astute designer distinguish them all? Some problems are clearer than others, with specific signal integrity measurements being developed for testing and measuring particular aspects of signal behavior. The fact is, multiple signal integrity problems could be present on a single interconnect simultaneously.
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Once you’ve finished your new project and you’re ready to push it to your manufacturer, you’ll normally be stuck in an endless email chain with an engineer, or you’ll have to share cloud links with each other. The cloud sharing and design release tools in Altium Designer and Altium Concord Pro are a huge help in this area. In this post, I’m going to take an existing project I’ve worked with in a number of recent blogs, create some fabrication and assembly documentation, and finally push this data to a manufacturer using Altium Concord Pro.
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To this day, I still see many PCB layout “rules of thumb” that first became common nearly 20 years ago. Do these rules still universally apply? The answer is a firm “maybe.” The discussion around PCB layout rules of thumb is not that these rules are correct or incorrect. The problem is that the discussion around these rules often lacks context, leading to the always/never type of discussion seen in some popular forums. My goal in this article is to communicate the context behind the common PCB design rules.
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As the operating speed of components has increased, controlled impedance is becoming more common in digital, analog, and mixed-signal systems. If the controlled impedance value for an interconnect is incorrect, it can be very difficult to identify this problem during an in-circuit test. However, testing is normally performed on a PCB test coupon, which is manufactured on the same panel as the PCB. If you want to get through board spins quickly and aid future designs, you might consider designing a test coupon and keeping it handy for future designs.
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Altium’s DbLib support is one of the oldest and most loved features of Altium Designer for managing electronic components and their data. They’ve been present in the software world since before I could fathom the existence of Ohm’s law. Altium 20.1’s new Component Sync feature allows you to synchronize virtually any database or database Library with Altium 365, taking advantage of both approaches strengths.
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If you’ve created your next great schematic, there is a lot going on behind the scenes in your design software. A schematic netlist is one of the central pieces of information that will be used in multiple features in your design software to create a real PCB. Your schematic netlist provides both electrical connectivity information, and reflects the functional structure of your design data in a single set of data.
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An SMPS is one of those quiet (yet electrically noisy) devices that makes your favorite electronics run smoothly. Among the numerous DC-DC converter topologies, a buck converter finds plenty of uses for stepping down the input voltage to a lower level while providing high efficiency power conversion. A common question around component selection for these power converters is how to select an inductor for a buck converter. The goal in working with an inductor and other components in a buck converter is to limit power loss to heat and while minimizing current ripple.
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GPS-capable devices range from your phone to your smartwatch; simply type in your destination and follow the directions. Simple, right? According to the Washington Post, we should all stop using GPS as it’s ruining the navigation centers of our brains. Despite the neurological effects on perception and judgment, the U.S. Department of Transportation (DOT) aims to find alternatives to GPS to provide redundancy.
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The list of features available in Bluetooth just got a little longer since the release of Bluetooth 5.1. If you want to incorporate a Bluetooth 5.1 SoC into your new product, you have two primary options for bringing this component into your board. The first is as an SoC that mounts to your board just like any other component. The other option is to bring a module into your new board—directly onto the surface layer. Here’s what you need to know about a Bluetooth 5.1 SoC or module in your next IoT product.
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Get Started with Altium 365 with a step-by-step guide and videos to experience the most connected experience for PCB design and realization: https://my.altium.com/altium-365/getting-started/
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Since its introduction in the late 90s, the USB standard has never ceased to grow in popularity. There has been a growing trend toward USB being a power delivery interface with data, rather than a data interface that can supply power, as the 1.0 specification originally intended. To supply the increasing thirst for power over USB, the USB 3.0 Spec with Type-C began implementing the Power Delivery standard, which you should consider using for your next electronics project.
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There are many types of circuit board tests available in electronics manufacturing today, each having unique goals and characteristics. This article presents guidelines at the design level (schematic and layout) to enable the use of in-circuit testing (ICT) fixtures to verify proper component assembly. These simple test fixtures allow your board to be tested as its assembled, which helps identify and remove failed boards from your production run.
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Technological advancements have been a hallmark of the past few decades, from the widespread adoption of internet technology to the smartphones and wireless devices we rely on every day to stay connected. Orlan Thatcher, Board Layout Specialist at Cirris Systems, could never have predicted the demand their services would generate. The company struggled with six different software platforms before switching to Altium Designer.
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I used to work in a research lab that worked primarily with RFID (Radio Frequency IDentification) and NFC (Near Field Communication) technology, particularly for the agriculture industry and cattle identification. These were very specialized fields; however, the lab also worked on projects which involved retail and various other applications for NFC. It’s an amazing technology that you might be using every day without thinking about it - building access to your mobile phone payments, for instance.
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You need to define your PCB geometry in the context of your enclosure. If your board cannot physically be assembled into the final product, it doesn't matter how well laid out it is electrically. This webinar focuses on how the MCAD CoDesigner allows you to edit your PCB in the context of a higher-level assembly, allowing you to respect the relevant mechanical constraints.