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Electrolytic capacitor
Blog
What Influences Electrolytic Capacitor Lifespan?

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.

Share Designs and track changes easily
On-Demand Webinar
Using Version Control in Your PCB Project Webinar

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.

Elegant writing
Blog
Creating Elegant and Readable Schematics

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.

Embedded thumbnail for How to Create Complex Keepout Shapes
How-To's
How to Create Complex Keepout Shapes

Keepout regions are easy to create in Altium Designer, but they can be complex. We’ll show you a few ways to make creating your more complex keepout shapes easier and more efficient.

Copper rings
Blog
Must Have Rapid Prototyping Tools

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. 

Embedded thumbnail for How to Use a Courtyard Layer for the Component Boundary
How-To's
How to Use a Courtyard Layer for the Component Boundary

In this video, you will see how to use the courtyard layer as a component boundary.

Blog
Best Practices for Sharing PCB Files vs. Sharing PCB Projects

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.

Principial Schematic
Blog
Best Practices for Using Reference Designs

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.

Traces on PCB
Blog
Transmission Line Fundamentals And Electromagnetic Fields, Part 1

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.

BGA pads
Blog
Your Complete Guide to Via Stub Analysis

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?

Thermal camera on people
Blog
Using a Thermal Camera for PCB Diagnostics

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.

Soldering station
Blog
Complete Guide to DIY SMT Assembly In Your Office

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!

Road 2021
Blog
State of the Electronics Industry 2021

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.

Oscilloscope
Blog
The Mysterious 50 Ohm Impedance: Where It Came From and Why We Use It

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?

Camera in water
Blog
Keeping Your Circuits Dry

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? 

PCB with old components
Blog
Tips for Updating Old PCB Designs with New Parts

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.

Design correction
Blog
How to Involve Customers in PCB Product Development

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.

A man with tablet
Blog
Managing PCB Manufacturing Quality Control in the Cloud

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.

Connector routing
Blog
Controlling Crosstalk In Connector Pinouts

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.

Complex Design Made Easy Preview
On-Demand Webinar
Altium Designer® 21: A Better Way To Design

The design process often requires repetitive work with tedious tasks. Altium Designer 21 represents a better way to design by revitalizing long-standing functionality and improving the user experience, as well as performance and stability, based on the feedback from our users. These improvements streamline existing design tasks and empower you to complete sophisticated rigid and rigid-flex designs with realistic 3D modeling.

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MOSFET Components
Blog
Should You Use Power MOSFETs in Series?

Power MOSFETs enable a huge range of electronic systems, specifically in situations where BJTs are not useful or efficient. MOSFETs can be used in high current systems in parallel arrangements, but what about their use in series? Both arrangements of MOSFETs have their pitfalls that designers should consider. Let’s look at MOSFETs in series as they are quite useful in certain systems, but be careful to design your circuits and your PCB for reliability.

MLCC controlled ESR capacitor
Blog
Controlled ESR Capacitors: Should You Use Them for Power Integrity?

I can’t think of a single product I’ve built that doesn’t require capacitors. We often talk a lot about effective series inductance (ESL) in capacitors and its effects on power integrity. What about effective series resistance (ESR)? Is there a technique you can use to determine the appropriate level of resistance, and can you use ESR to your advantage?

Ground Pour, Impedance and Losses
Blog
Microstrip Ground Clearance Part 2: How Clearance Affects Losses

If your goal is to hit a target impedance, and you’re worried about how nearby pour might affect impedance, you can get closer than the limits set by the 3W rule. But what are the effects on losses? If the reason for this question isn’t obvious, or if you’re not up-to-date on the finer points of transmission line design, then keep reading to see how nearby ground pour can affect losses in impedance-controlled interconnects.

Choosing the Right Microphone for Embedded Applications
Blog
Choosing the Right Microphone for Embedded Applications

If you need to capture sound waves for your electrical device to process, you'll need a microphone. However, microphones these days have become very advanced, and there are so many options to choose from. They range from the relatively simple and popular condenser type microphones to state-of-the-art sound conversion solutions incorporating internal amplifiers and other electronic processing functionality. In this article, we'll take a look at some of the options available.

 Computer planet with circuit grid
Blog
Composite Amplifiers and How They Give the Best of Both Worlds

There are many times where you need an amplifier with high gain, low noise, high slew rate, and broad bandwidth simultaneously. However, not all of these design goals are possible with all off-the-shelf components. Here are some points to consider when working with a composite amplifier design and how to evaluate your design with the right set of circuit simulation tools.

Impedance balancing power supply
Blog
Reduce Common-Mode Noise in Your Power Supply with Impedance Balancing

Simple switching regulator circuits that operate in compact spaces, like on a small PCB, can usually be deployed in noisy environments without superimposing significant noise on the output power level. As long as you lay out the board properly, you’ll probably only need a simple filter circuit to remove EMI on the inputs and outputs. As the regulator becomes larger, both physically and electrically, noise problems can become much more apparent, namely radiated EMI and conducted EMI in the PCB layout.

Part 1: Why Your PCB Design Review Process Is Obsolete and What You Can Do About It
Blog
Part 1: Why Your PCB Design Review Process Is Obsolete and What You Can Do About It

A PCB design review is a practice to review the design of a board for possible errors and issues at various stages of product development. It can range from a formal checklist with official sign-offs to a more free-form inspection of schematic drawings and PCB layouts. For this article, we will not delve into what to check during a design review process but rather look at how a review process itself usually unfolds and how to optimize it to get the most out of your time.

Star ground PCB
Blog
What is PCB Star Grounding and Why Would Anyone Use It?

If you look on the internet, you'll find some interesting grounding recommendations, and sometimes terminology gets thrown around and applied to a PCB without the proper context or understanding of real electrical behavior. DC recommendations get applied to AC, low current gets applied to high current, and vice versa... the list goes on. One of the more interesting grounding techniques you'll see as a recommendation, including on some popular engineering blogs within the industry, is the use of PCB star grounding.

Silkscreen on PCB
Blog
Your Guide to PCB Silkscreen

Every PCB has silkscreen on the surface layer, and you’ll see a range of alphanumeric codes, numbers, markings, and logos on PCB silkscreen. What exactly does it all mean, and what specifically should you include in your silkscreen layer? All designs are different, but there are some common pieces of information that will appear in any silkscreen in order to aid assembly, testing, debug, and traceability

Gibbs ringing
Blog
What Causes Gibbs Ringing in High-speed Channel Simulations?

Designing high-speed channels on complex boards requires simulations, measurements on test boards, or both to ensure the design operates as you intend. Gibbs ringing is one of these effects that can occur when calculating a channel’s response using band-limited network parameters. Just as is the case in measurements, Gibbs ringing can occur in channel simulations due to the fact that network parameters are typically band-limited.

Heated component on PCB
Blog
Efficient Heat Dissipation with SMD Heat Sinks Keeps You From Dropping PCBs

In electronics, there is the possibility that your PCB can get pretty hot due to power dissipation in certain components. There are many things to consider when dealing with heat in your board, and it starts with determining power dissipation in your design during schematic capture. If you happen to be operating within safe limits in a high power device, you might need an SMD heat sink on certain components. Ultimately, this could save your components, your product, and even the operator.

RF PCB
Blog
RF Power Supply Design and Layout Guide

One thing is certain: power supply designs can get much more complex than simply routing DC power lines to your components. RF power supply designs require special care to ensure they will function without transferring excessive noise between portions of the system, something that is made more difficult due to the high power levels involved. In addition to careful layout, circuitry needs to be designed such that the system provides highly efficient power conversion and delivery to each subsection of the system.

Prevent Overvoltage, Overcurrent and Heat logo
Blog
Methods to Protect your Circuit

Overvoltage, overcurrent, and heat are the three most likely events that can destroy our expensive silicon-based components or reduce our product’s life expectancy. The effects are often quite instant, but our product might survive several months of chronic overstress before giving up the ghost in some cases. Without adequate protection, our circuit can be vulnerable to damage, so what should we do? Or do we need to do anything?

SUBCKT sharing
Blog
SUBCKT Sharing: The Fastest Ways to Share SPICE Models Online

Today’s PCB designers and layout engineers often need to put on their simulation hat to learn more about the products they build. When you need to perform simulations, you need models for components, and simulation models often need to be shared with other team members at the project level or component level. What’s the best way for Altium Designer users to share this data? Read this article to learn more about sharing your models with other design participants. 

RF Printed Circuit Board
Blog
RF PCB Material Comparison for mmWave Devices

When some designers start talking materials, they probably default to FR4 laminates. The reality is there are many FR4 materials, each with relatively similar structure and a range of material property values. Designs on FR4 are quite different from those encountered at the low GHz range and mmWave frequencies. So what exactly changes at high frequencies, and what makes these materials different? To see just what makes a specific laminate useful as an RF PCB material, take a look at our guide below. 

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NEW
Embedded thumbnail for Create Clearance Rules Faster and with Less Effort
New in Altium's Software
Create Clearance Rules Faster and with Less Effort

Setting up clearance rules is now more intuitive in the Constraint Manager. Choose the Simple view for faster configuration with grouped object types, or the Advanced view when you need detailed, matrix-based clearance control.

NEW
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How-To's
Mastering HDI Design Rules in Altium Designer

In our latest Altium Academy tutorial, we guide you through configuring the essential HDI PCB design rules in Altium's software. You'll learn how to use your manufacturer's fabrication capabilities to create accurate design rules and constraints for your PCB.

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New in Altium's Software
Search, Filter, and Navigate PCB Designs Faster

The Web Viewer now features a redesigned search experience for faster access to PCB design data across supported CAD formats. A lightweight, intuitive interface lets you begin with simple search terms and progressively refine results using contextual suggestions.

Embedded thumbnail for Gain Better Control Over Wire Bond Visibility
New in Altium's Software
Gain Better Control Over Wire Bond Visibility

New bond wire visibility controls give you greater flexibility when working with wire-bonded boards and footprints, making it easier to focus on the details that matter most.

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New in Altium's Software
Coming Soon: Selectable Harness Source Within Multi-board Design

Selectable Harness Source Within Multi-board Design enables harness projects to drive system connectivity while maintaining bidirectional synchronization between multi-board schematics and harness wiring diagrams for improved accuracy and easier design management.

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New in Altium's Software
Choose the Simbeor Version for Your PCB Calculations

The PCB Editor now lets you choose the Simbeor version used for delay and impedance calculations, giving you more flexibility and consistency across your design workflows.

Embedded thumbnail for Improve PCB Editor Performance with Via Instancing
New in Altium's Software
Improve PCB Editor Performance with Via Instancing

The PCB Editor now uses via instancing to generate geometry for each via individually, providing greater flexibility and a more advanced approach to managing vias in PCB designs.

Embedded thumbnail for GSSG Stackup Deep Dive: Routing, Impedance, and HDI
How-To's
GSSG Stackup Deep Dive: Routing, Impedance, and HDI

A ground-signal-signal-ground (GSSG) stackup rethinks the traditional four-layer PCB structure by moving the ground planes to the outer layers and routing signals on the two inner layers. In this Altium Academy deep dive, we review a real one-minute design review submission and demonstrate how to configure a GSSG stackup properly using the Layer Stack Manager.

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New in Altium's Software
Generate IPC-7351B Compliant Footprints with More Control

The IPC Compliant Footprint Wizard has been updated to improve IPC-7351B compliance across supported package types. Enhancements include footprint calculations, package outlines, silkscreen and courtyard generation, layer mapping, density table behavior, and new pad trimming controls for gullwing packages, with support added to the batch generator Excel template.

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New in Altium's Software
Add Unit-Aware Temperature Coefficient Parameters

Component templates in a connected Workspace on the Altium Platform now include support for Temperature Coefficient (ppm/°C) as a unit-aware user parameter type. This makes it possible to define temperature coefficient values directly within the template using the appropriate units.

Embedded thumbnail for When to Add Part Numbers to SMD Passives
How-To's
When to Add Part Numbers to SMD Passives

Check out our new video covering essential electronics fundamentals, with a focus on why including part numbers for SMD passive components, such as SMD resistors, directly on schematics is so important. We also explore whether relying only on the Bill of Materials (BOM) is enough for effective electronic component management.

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New in Altium's Software
Present Large Harness Tables More Clearly

Harness Draftsman now supports splitting connection tables across multiple pages in *.HarDwf documents. With the new page height limit setting, you can easily control how much of the table appears on each page.

Embedded thumbnail for Innovate Beyond - The Future of Electronics Development in Automotive
How-To's
Innovate Beyond - The Future of Electronics Development in Automotive

Discover how the future of automotive electronics is being shaped by a more connected development approach that unifies teams, data, requirements, design, collaboration, and manufacturing. Recorded at BMW Welt and the BMW Museum during Altium’s "The Future of Electronics Development in Automotive" event, this video explores the key challenges and innovations driving the next generation of automotive design.

Embedded thumbnail for Coming Soon: Design Rule Sets
New in Altium's Software
Coming Soon: Design Rule Sets

Soon, PCB design rules in Altium will be organized into reusable Rule Sets within the PCB Rules and Constraints Editor. These rule sets can be created, duplicated, enabled or disabled, renamed, deleted, imported, and exported, making it easier to manage rules for specific interfaces, manufacturing requirements, or unique design constraints.

Embedded thumbnail for Decoupling Capacitor Routing: When to Use Vias vs Traces
How-To's
Decoupling Capacitor Routing: When to Use Vias vs Traces

Check out this video, a follow-up to the decoupling capacitor placement series, exploring the inductance tradeoffs between trace routing and via connections. Using real component examples from an Ethernet switch design in Altium, the video demonstrates how different routing choices can impact overall performance.

Embedded thumbnail for Coming Soon: Interactive Dynamic Phase Tuning
New in Altium's Software
Coming Soon: Interactive Dynamic Phase Tuning

The Interactive Length Tuning tool allows you to manually tune a single net in a differential pair while maintaining equal pair length and phase alignment across the entire route. This enables more efficient differential signal transmission, greater control during manual tuning, and faster pattern creation within defined phase tolerance limits.

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