News & Updates
If you speak with a bunch of design engineers, you might quickly form the opinion that the electrolytic capacitor has a particularly dubious reputation. A faulty electrolyte mix used in these types of capacitors led to premature device failures, and quite often, a “bit of a mess” was made to the PCBs on which they were soldered. However, despite the problem of the capacitor plague, this article is focusing on helping the designer understand how to get many more years of useful life from an electrolytic capacitor.
Version control has been a staple of software development for decades, but hardware development can benefit just as much from a version control system (VCS). Traditionally, VCS has been managed locally tying you down to a workplace, but advances in cloud technology have removed that limitation. Learn how Altium 365 cloud technology enables working concurrently on designs with built-in version control and evaluate its advantages.
A schematic drawing will not only tell your PCB design software what needs to connect where, but it also communicates the purpose of a circuit to other people. It’s easy to create a schematic, but it can be harder to make a helpful schematic that can be quickly and easily read and comprehended by the reader. In this guide, based on years of industry experience, we will show you how to improve your schematic layout so that your designs are elegant and readable.
Suppose your job involves rapidly iterating designs or creating a wide variety of products for clients. In that case, there are some essential tools available that can save you a tremendous amount of time, bringing high engineering risk devices to completion successfully. Whether you’re working on internal projects or developing high mix devices for clients as a consulting or freelance firm, these indispensable tools will help you ship a higher quality product in less time.
Even though today’s cloud platforms are immaculately secure and they allow a range of files to be easily shared, there are times where you should limit the data you’re sharing to only the critical files required. For PCB designers, this means either sharing entire design projects or sharing individual files with your manufacturer, customers, contractors, or collaborators. If you want to eliminate liabilities and keep your team’s design data secure, consider these best practices for sharing PCB design data with Altium 365.
Best component companies will release reference designs for their new and legacy products to show designers an example application for a component. If the reference design is good enough and it very nicely illustrates how to quickly engineer around a few main components, I’m likely to use them in the design and the component maker has just earned my business. If you’re a newer designer and you’re wondering whether reference designs are right for your next project, follow these best practices so that you don’t make any mistakes with your reference design.
When we deal with “abstract” aspects of electromagnetic fields and how they function, it can be easy to get lost in the weeds regarding them. The first part of this article will address an important aspect of transmission line fundamentals, namely how electromagnetic fields and waves propagate on a transmission line. This article’s end goal is to create a core understanding of these concepts so that when it comes time to design a PDS, the proper design methodologies are followed and a properly working PDS is achieved appropriately, the first time and every time.
Via stubs are sometimes viewed as an annoyance, especially when you only need to make a transition between adjacent layers. For low speed, less-dense boards with low layer count, via stubs are an afterthought, or they may not receive consideration at all. For faster edge rates/higher frequencies, the conventional wisdom is to remove all via stubs. The question is: what exactly counts as “high frequency,” and how do you figure out the relevant length?
Unlike the clumsy human finger, a thermal camera can detect minute temperature differences across its view. This allows you to rapidly identify any components that are consuming current. Any parts or areas of your board that draw current will also generate heat that can easily be picked up by a thermal camera.
I want to share a little secret with you in this article: Assembling SMT prototypes boards is not only easy, but it requires very little equipment. Using just a stencil, I can easily hand prototype down to 0.3 mm pitch ICs, and 0201 (imperial) sized passive components. If you’re currently hand assembling boards with a soldering station, you need to stop this immediately and start using a stencil instead!
With the challenges of 2020 behind us, what challenges and opportunities lie ahead for hardware designers in 2021? In this article Vince Mazur, Technical Product Marketing Engineer at Altium, looks ahead to three emerging trends and share steps to address each one successfully in the year ahead.
When we talk about S-parameters, impedance matching, transmission lines, and other fundamental concepts in RF/high-speed PCB design, the concept of 50 Ohm impedance comes up over and over. Look through signaling standards, component datasheets, application notes, and design guidelines on the internet; this is one impedance value that comes up repeatedly. So where did the 50 Ohm impedance standard come from and why is it important?
For the home hobbyist, protecting their electrical devices usually means keeping the coffee cup or soda can away from anything that carries a large voltage. Good practice indicates that electrical devices should be housed in an enclosure to protect expensive components and reduce the risk of electric shocks from exposed circuitry. However, what do you do if the fantastic new device you’ve designed needs to work in a humid, damp, or dripping wet environment?
Have you ever opened up an old design and wondered how much of it was still usable? Maybe you were contacted by an old client, and they want you to provide some updates on an old design. No matter what the situation is, there are times where updating old PCB designs with new parts makes sense. If done correctly and when armed with all the right information up front, you can cut down the total design time while preserving the best parts of your design in a new iteration. Here’s what you can do to update your old designs successfully and how your PCB design features can help.
The more complex the product gets, the more involved your customer will need to be to ensure you’re designing to their requirements. When you’re using a data sharing system that integrates with your PCB design tools, it’s easy to give your customers visibility into the product development process. Altium 365 is the only system that integrates with Altium Designer® and gives you the ability to give anyone access to your PCB projects, including your customers and manufacturer.
Anytime you’re looking for a fabricator to produce your new design, you should ensure they have a robust quality control program. Where can quality defects arise and how can manufacturers quickly get this information back to a design team? Sometimes emails can leave too much ambiguity and it is difficult to track progress on specific design changes in the PCB layout. If you’re planning to put a new design into high volume production, there are some basic points that should be checked during fabrication and assembly as part of a PCB manufacturing quality control program.
Controlling crosstalk is one of the key goals in any PCB design. In most instances, when we talk about crosstalk, it’s in reference to the unwanted interaction of the electromagnetic field traveling on one transmission line with a neighboring transmission line. But crosstalk can also occur in the connector pin out. This article will describe this type of crosstalk, the types of disruptions it causes, wherein the design cycle it needs to be factored in and how it can be successfully controlled.
There are all sorts of version control systems (VCS) out there that people have been using with their PCB design software. As discussed in Why Use a Version Control System, we looked at different options ranging for local hard drive storage to sophisticated online revisioning systems. In this article we will be reviewing the differences between a standard VCS and Altium 365.
Controlled impedance routing at high frequencies is difficult enough, and it's important to make sure that you stay within your loss budget on long routes or in lossy media. When you have to route a long trace or a long differential pair to a connector or another component, what can you do if you're reaching the end of your loss budget? In this article, we’ll take a look at the skip reference routing method and explain how it can help recover some loss budget in a lossy interconnect.
We are pleased to announce that Altium 365 is officially SOC 2 Type 1 certified. System and Organization Controls (SOC) 2 is a widely recognized attestation of security compliance defined by the AICPA and is considered the standard for ensuring data security and operational maturity. A SOC 2 certification provides valuable information for companies to assess the quality of the security provided by a service such as Altium 365.
It’s no secret that component shortages have become more frequent this year. Companies will continue to grapple with supply chain challenges into 2022 and beyond. The impact of manufacturing delays can be substantial if a part is not available. Delays occur and sales plans get put on hold. It can also be very expensive and risky to replace parts from multiple sources. Fortunately, many shortages can be avoided by introducing proactive supply chain practices.
Reliability testing and failure analysis of a PCB/PCBA go hand-in-hand; when designs are stressed to the limit, their failure modes need to be determined through thorough inspection and analysis. To get started on this topic, it’s important to understand the qualification aspects that will govern your bare board design and the PCBA. We’ll look at the various dimensions of PCB/PCBA reliability, as well as some of the standard failure analysis techniques used to identify potential design change requirements.
By now, designers should be aware of some important behavior involved in power delivery to components in a PCB, particularly for digital components. All digital components produce and manipulate wideband signals, where the frequency content theoretically extends up to infinite frequency. As such, some radiation may propagate through your PCB, leading to resonant behavior that is not observed on the power rail.
Once your board passes through the standard PCB fabrication process, the bare copper in your PCB will be ready for the application of a surface finish. PCB plating is applied to protect any copper in your PCB that would be exposed through the solder mask, whether it’s a pad, via, or other conductive element. In this article, I’ll run over the different PCB plating material options and their advantages in your PCB.
The PCB supply chain encompasses multiple components, raw materials, and the PCB itself. PCBs and PCB assemblies are often the most technically complex components that are purchased for electronic assemblies and products. The complexity of modern PCBs leads to several challenges for a supply chain management team that may be significantly different when compared with other commodities the team manages. In this brief guide, we'll look in-depth at the PCB supply chain, and specifically what falls within the purview of a procurement and supply chain management team.
On interconnects, such as board-to-board connections or cascaded transmission line arrangements, you have an important EMC compliance metric that is sometimes overlooked. This is mode conversion, which can be visualized in an S-parameter measurement for differential and common-mode signal transmission. In this article, we’ll look at a short overview of mode conversion in high-speed design with some examples from common differential standards.
There are some aspects of PCB design and layout that seem deceptively simple, and yet they have a complex answer that is related to many important aspects of manufacturing. One of these design aspects is the match between PCB via size and pad size. Obviously, these two points are related; all vias have a landing pad that supports the via and provides a place to route traces into a via pad. However, there are some important sizing guidelines to follow when the matching pad and via sizes, and this match is an important element of DFM and reliability.
Are you looking for a free tool that you can use to calculate the impedance of differential microstrips? We created a simple tool you can use to calculate differential microstrip impedance for a given geometry and dielectric constant. If you’ve been looking for an accurate differential microstrip impedance calculator, then the calculator below is certainly one of the best free tools you’ll find on the internet before you start using field solvers to determine differential pair impedance.
In this article, we’ll discuss the key design features to implement, and steps to take prior to fabrication that will help prevent some common DFM problems. I’ll also provide examples of where I commonly see these PCB DFM problems in signal integrity circuits.
If you’re working with a high-speed digital component, there are some simple power integrity rules that should be followed. However, there is one quantity that is sometimes ignored when building a PDN impedance simulation: the spreading inductance of your plane pair. Here are some points designers should know about the spreading inductance of a plane pair.
In this article, I’ll present some design basics that every new designer should follow to help ensure their design process is successful. Some of these points may challenge the conventional view of how circuit boards are constructed, but they are intended to help balance low noise signaling, manufacturability, and ease of solving a layout.
High voltage PCBs are subject to certain safety and reliability concerns that you won’t find in most other boards. If your fabrication house specializes in high voltage PCBs and keeps materials in stock, they can likely recommend a material set, as well as a standard stackup you might use for certain voltage ranges and frequencies. If you need to choose your own materials, follow the tips below to help you narrow down to the right material set.
There are some guidelines I see many designers implement as a standard practice, often without thinking about it. Some of these practices are misunderstood or implemented without best practices. Others are implemented without thinking about the potential problems. One of these is the use of tented vias, which is sometimes implemented in a PCB layout by default. Is this always the right practice?