News & Updates
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Overview of the PCIe 6.0 Standard
Just as you get used to PCIe 5.0, they decide to release another standard! The newest iteration of PCIe is Gen6, or PCIe 6.0. PCIe 6.0 brings a doubling of channel bandwidth through introduction of PAM-4 as the signaling method in high-speed differential channels. This signaling method is a first for PCIe, and it’s an important enabler of the doubled data rate we see in the current standard. In this article, I’ll run over the important points in the standard and what PCB designers can expect when designing these channels.
Blog
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SPI vs. I2C: How to Choose the Best Protocol for Your Memory Chips
One of the common implementations of SPI and I2C in a PCB layout is as a protocol for reading and writing to an external Flash memory. Flash chips are a very common component in embedded systems and can offer high capacities of non-volatile memory up to Gb values. When choosing a memory chip, you'll want to match the application requirements and functionality with the bus speed you need for read and write operations in your memory chip. There is also the matter of the type of Flash memory you'll need to access (NOR vs. NAND).
On-Demand Webinar
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Tips & Tricks: Board Shape Creation
Being able to design a board in your ECAD environment doesn’t mean that it is manufacturable in real life. You have to make sure your CAD representation won’t have any problems in the real world by taking some precautions. For example, there are certain areas that need to be free of components and have specified clearances like your board edge. This webinar will help you get acquainted with the creation and modification of your board shape so that you can ensure manufacturability.
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Is There an SPI Trace Impedance Requirement?
There is no SPI trace impedance requirement? The reality is that SPI lines only start to need impedance control when the length of the interconnect becomes very long. And because there is no specific impedance requirement in the bus, you have some freedom in channel design and termination. So what exactly qualifies as “very long” and when is some termination method needed? We’ll break it down in this article.
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The Skin Effect, Current Density, and the Electromagnetic Field
During this year's AltiumLive CONNECT event, I recall receiving an interesting question about the skin effect and the distribution of current due to the presence of ground in coplanar transmission lines. In this article, we'll look at the electric field around a transmission line carrying a signal, and how this might be impacted by the skin effect.
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What You Need for PCB Packaging and Shipping
When you get your PCBA back from an assembler, you’ll notice the packaging materials used to pack and ship the PCBA. Those materials are specific to electronics, and if you build products on behalf of clients, it’s important to know the packaging materials used for packing and shipping electronics. In this article I’ll show the main set of materials and equipment used to package electronics assemblies.
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How to Make PCB Gerber Files in Altium Designer Step-by-Step
Once you've got your PCB layout finished and you're ready to start preparing for manufacturing, one of the critical steps is to create PCB Gerber files. When you're ready to create your Gerber files, you need the right set of CAM processor tools that can take data from your PCB layout. In this article, we'll guide you through this process of how to make PCB Gerber files and show some example tasks you might need to perform to generate them.
On-Demand Webinar
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Help Ensure The Best Designs With Component Management
There are many aspects to designing a PCB. One of the larger aspects has to do with managing your components. We all need components for our designs, but are those components in our library and designs up-to-date or even purchasable? These questions need to be answered before we can safely use them. Altium Designer® has several tools to help you manage the components in your libraries and designs.
Blog
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Should You Place Teardrops on Differential Pairs?
One of the major factors impacting reliability of a PCBA is the use of teardrops on traces in the PCB. Like many aspects of reliability, the considerations also span into the signal integrity domain, particularly as more high-reliability products require greater data handling capabilities and run at higher speeds. In this article, I’ll break down the issues present in teardrop usage on differential pairs and how these may affect impedance.
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The High-Reliability PCBA Design and Test Challenge
High-reliability electronics must go through multiple rounds of testing and qualification to ensure they can withstand their intended operating environment. Designing to performance standards, whether the baseline IPC standards or more stringent industry standards, is the first step in ensuring a reliable circuit board. In this e-book, readers will gain a thorough look into PCB testing and analysis, starting from basic tests performed on bare boards and completed assemblies.
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Expert Tips for Safely Powering Up Your New PCB for the First Time
In this blog we will show you the strategies to minimize the risk of damage to circuit boards during the initial power-up process.
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High-Speed PCB Design Tips
Essential tips for high-speed PCB designs, and when you need to start being concerned about how and where you route your traces.
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MIDs Make a Comeback as Vertical SMD Modules for Your PCB
If you've ever wanted to mount components vertically, but without the expense of a flex section this article is for you. You can use an MID in your PCB.
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Everything You Need to Know about Conformal Coating
Explore the basics of conformal coating with us. Conformal coating is a protective layer applied to electronic circuits to guard against environmental factors such as moisture and dust.
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Introduction to Open Source Laptop Project
We have started a very exciting journey into the creation of an open source laptop project. This project will be an ongoing one, with our community able interactively participate. By utilizing Altium 365 users will be able to view, comment on, and download design files. This will be a great learning experience for new and experienced PCB designers.
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Mechanical and Electrical Design Come Together With Altium’s MCAD CoDesigner
Electronics designers working in small design houses or in large enterprises often encounter a common set of challenges when interfacing with mechanical designers. Continue reading to learn how you can best interface with your mechanical designer to get your projects out the door fast!
Blog
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Ebook: Routing High-Density Interconnects with Reliable Microvias
HDI PCBs take a particular approach to routing interconnects through multiple layers to ensure reliability during fabrication, assembly, and operation. The critical structure that enables this is microvias, which are prone to failure if not designed properly. In this e-book, readers will receive an initial look at the reasons microvia reliability has come into the spotlight and why HDI PCB designers put reliability first when routing through microvias.
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IPC-2221 Calculator for PCB Trace Current and Heating
Aside from impedance and annular ring calculations, one of the other major formulas specified in the IPC 2221 standard relates temperature rise, trace width, and trace current. THere is also the IPC-2152 standard, both include this guidance on designing for thermal reliability, but which standard should we use?
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Stripline Impedance Calculator
Striplines provide some advantages over microstrips as they take advantage of natural shielding and coupling from nearby ground plane layers. Although they tend to experience higher losses due to total confinement in the dielectric, they can be thinner due to the high dielectric constant used in internal layers of a PCB. Use our free impedence calculator to help you determine the correct width needed to hit a target impedance.
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Which Types of Opto-Isolators Are Right For Your Signal?
An optoisolator is a cool electronic device that can be used to pass information between a diode without passing an electrical current. There are many great applications for these, but do you know which one is right for you?
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Properties panel document options in SCH editors
The Properties panel provides access to the properties of documents and objects. The contents of the panel change depending on the active document or the selected object. This blog will quickly go over some of need to know options around the properties panel in the schematic document.
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The High-Speed PCB Stackup Design Challenge
Even with all the good guidelines out there for high speed design, there are particular aspects of stackup construction and their relation to building boards that get overlooked. This blog is goes beyond just the typical SI/PI guidelines and looks at these problems from more of an engineering perspective.
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Everything You Need to Know About Stitching Vias
Stitching vias are something you often see spread around the surface layer of a PCB, but what are they? and should you be using them? In this guide, we'll go over some of the standard uses of stitching vias and when they should be used in a PCB.
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PCB Stackup Basics
In comparison to the build-up of a PCB, the stackup is more concerned with the electrical type of each layer, that is are we working with signals, power, or ground. Continue reading to learn how you can optimize your layer stack.
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Multi-board and Harness Design Capability in Altium Designer 23
Altium’s VP of marketing Lawrence Romine discusses the multi-board and harness design capabilities coming in Altium Designer 23.
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Controlled ESR Capacitors: Should You Use Them for Power Integrity?
Controlled ESR capacitors are important for power integrity in your design as they can help smooth out the PDN impedance spectrum in your high speed PCB.
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