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PCB Design Variants: Managing Multiple PCBA Versions

Product variations often require different component populations, alternate parts, or configuration settings while keeping the underlying PCB design unchanged. This article explains how structured variant management keeps these differences organized and ensures each configuration has the correct BOM and manufacturing outputs.

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New in Altium's Software
Improve Visual Accuracy with True Arcs

Discover how True Arc Rendering improves arc visualization in the PCB Editor and PCB Library Editor by displaying true arcs across 2D, 3D, and Board Planning modes. This provides a more accurate representation of board geometry and helps you work with curved features with greater precision throughout the design process.

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Collaborative Engineering with Team Ribbot
Two engineers, one board, nobody's work gets wiped out

When Team Ribbot’s electrical and mechanical engineers work on the same combat-robot design, unwanted changes can mean hours of lost work. See how Altium Designer and MCAD CoDesign let the team review and selectively accept changes, enabling seamless parallel collaboration across different locations and schedules.

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New in Altium's Software
Visualize and Refine Your Harness Designs

Create detailed views of bundle contents, control wire and cable paths, and rotate physical models to accurately represent the final harness assembly. These capabilities give you greater control over harness design and help ensure your digital model reflects the physical result.

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New in Altium's Software
Introducing Agentic Requirements Engineering

Discover a new way to work with Requirements Portal through Agentic Requirements Engineering. AI agents analyze your project data and surface proposals for your approval, reducing friction in requirements management and helping align your team's shared model with your design intent.

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New in Altium's Software
Simplify Rule Set Updates and Replacement

Learn how to import rule sets with greater flexibility in Altium. When importing rules, you can add new rules to your existing set, replace only rules that match, or completely replace the current rule set giving you full control over how design rules are updated.

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Collaborative Engineering with Team Ribbot
How Team Ribbot fits 40 kW of power into a 250-pound combat robot

What do you get when you pack the power of a small electric car into a combat robot with virtually no room to spare? In the first episode of our collaboration with Team Ribbot and Altium, explore how seamless ECAD-MCAD collaboration helps the team tackle complex design challenges, optimize high-performance designs, reduce errors, and bring products to life faster.

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New in Altium's Software
Just Released: Supplier Data Merging

Discover how the Supplier Data Merging feature brings together supplier information from your custom parts database and the Altium Parts Provider into a single, unified view. Access consolidated supplier data wherever supplier part numbers appear, including in ActiveBOM and during component selection.

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How-To's
How Altium’s Layer Stack Manager Actually Works

Take a look inside Altium's Layer Stack Manager and discover how its impedance calculator determines the ideal trace width for your target impedance. In this video, we break down the "black box" behind the calculation and show how the Simbeor-based field solver provides accurate results while eliminating the need for advanced field solver expertise.

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New in Altium's Software
Connect Requirements Directly to Your PCB Design

See how the Requirements Portal integration in Altium Designer simplifies requirements management by bringing system requirements directly into your PCB design workflow. Connect requirements to design documents, assign tasks, track verification in real time, and keep your entire team aligned with seamless synchronization in Altium 365.

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How-To's
SFP Connector Routing: High-Speed Differential Pair Design Tips

Discover practical SFP and SFP+ routing tips in our latest video, inspired by a real question from the Altium subreddit. We cover how aggressive serpentine length tuning can be, how to reduce impedance discontinuities in tight meanders, and how meandering influences mode conversion at 10G and higher data rates.

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Sharing Settings in Altium 365
Blog
Granular Sharing — Role and Group Management

With Altium 365, you can grant permission to teams or users based on the specific needs of a project. We have expanded Altium 365’s file-sharing setting, giving you more granular control over who can download source files and reshare projects with others

Use your DRCs
Blog
Design Rule Checking in the PCB Design Workflow

Any time you design a PCB, and you want to turn it into a real product, you will have to make sure the design obeys the constraints within the standard PCB manufacturing process. This imposes multiple rules on any design, and ECAD software will enforce design rules as you create the board to ensure you obey these important constraints. Make sure you enforce the right design rules at the beginning of the PCB design workflow 

How to select high frequency materials
Blog
Best Practices for High-Frequency PCB Material Selection

High frequency PCB design can seem esoteric, and I've heard many an engineer describe it as "black magic"! The subject is also a bit confusing, especially once someone asks which frequencies could be reasonably considered "high". Before you do anything inside the layout for a high-speed or RF PCB, you will need to pay attention to the materials being used in the board. If you're unsure which high frequency PCB materials you should use, then keep reading to learn more.

PCB Noise Reduction
Blog
PCB Noise Reduction: Do You Need Isolation, Shielding, or Filters?

Of all the noise and operational challenges designers face in their PCBs, there is one overarching problem that is arguably most popular: electronic noise. It could originate as an SI/PI problem, it could possibly arise from some external source, or it could be good old-fashioned crosstalk! These tend to fall into three categories: adding shielding, doing something to create isolation, or placing filters. Let's look at all of these as they tend to be the default solution set when confronted with many noise problems.

What’s New in Altium 365
Blog
What’s New in Altium 365: Version Control for Hardware, Layer Stackup in Web Viewer, and SOC 2 Type 1 Certification

In February, we hit a new record in the number of users on the platform. The Altium 365 user community is now 20,000 strong! You can now migrate from an external version control system to Altium 365 preserving the history of commits. We also received the SOC 2 Type 1 certification from KPMG, made layer stack available in the web viewer, and added the brand new capability to track tasks in the context of your design project. Keep reading to learn more!

Rigid-Flex in Altium Designer
Blog
Support for Rigid-Flex in Altium Designer

Rigid-flex in Altium Designer starts with designing a manufacturable PCB layer stack complete with via transitions and any calculated impedance requirements. Flex sections also need to be placed in the layer stack before moving into the PCB layout. Once inside the PCB editor, bending lines can be clearly defined in the PCB layout, and these can be visualized in Altium Designer's 3D PCB design tools. Keep reading to see how Altium Designer supports your flex and rigid-flex designs.

Specifying your stackup
Blog
Communicating PCB Layer Stackup Needs to Manufacturers

In the business of PCB design, communicating needs to manufacturers and vendors is a top priority. The context of our requests is sometimes lost either by not providing the correct information, not listing enough information, or not giving any information. Although the experienced PCB designer can take steps to specify everything they want to see in their PCB stackup, eventaully the manufacturer will handle that decision in an effort to balance available materials with processing capabilities and yield.

Risk Vs. Reward
Blog
Risk Vs. Reward

During the recent IPC APEX expo, there was a lot of discussion about SAP, or semi-additive PCB processes.  As with any new technology adoption there were people that are excited to jump right in and start designing with much finer feature sizes and work through the inevitable changes to the traditional thought process. Others are in a "let’s wait and see" mode and of course there are a few skeptics there as well, so keep reading to learn more.

Parasitic Extraction for your traces
Blog
Parasitic Extraction with an Electromagnetic Solver in PCB Routing

Parasitic extraction: the integrated circuit design community must grapple with this task on a daily basis, especially once gate features are reduced below ~350 nm and chips run at high switching speeds. The PCB community also has to deal with this idea in order to better design power delivery networks, interconnects with precise impedance, and properly quantify crosstalk and coupling mechanisms.

PCB
Blog
Ebook: PDN Simulation and Analysis Guide

Most designers don’t realize they need to worry about power integrity until they have a power integrity problem. Other designers might build boards that can’t handle the demands of modern digital and high frequency components, and they may not realize the problems that lurk in their power delivery network (PDN). Although the basic concepts involved in designing for power integrity are well-known, myths about power integrity abound, and designers need tools to help them evaluate and qualify power integrity in a PDN.

Ferrites in PDN Simulation
Blog
Ferrite Beads and Transfer Impedance in a PDN Simulation

The use of ferrites in a PDN is one design recommendation that is fraught with unclear guidance and over-generalized recommendations. If you see an application note or a reference design that recommends placing a ferrite in a PDN, should you follow this in your specific design, or should you ignore this and focus on adding capacitance? 

PCB Design Outputs
Blog
Overview of PCB Design Output Files

Before your board can be put into production and prepared for assembly, you have to generate a set of files that assist your manufacturer. These are your PCB design output files, also known as manufacturing files, fabrication data, assembly files, and a host of other names. Before you send your design file off to a manufacturer in an email, make sure to get a list of their required fabrication and assembly files first. If you’re a new designer, take some time to read over the basic PCB manufacturing file extensions below.

How transformers work
Blog
Transformer Theory Made Simple

Transformers can provide very effective signal isolation and are used to manipulate AC voltage and current levels. They can achieve all this with a greater than 95% power efficiency, which is why we commonly see them used in bench power supplies, audio gear, computers, kitchen appliances, and wall-warts. However, transformer theory can be unintuitive and in this article we answer on questions about them

Take advantage of the VCS-based workflow in Altium 365
Blog
Using Altium 365 Over Your Vanilla Version Control System

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.

Recovering Copper Losses
Blog
Recover Conductor Losses By Clearing Your PCB Ground Layer

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.

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New in Altium's Software
Customize Your ODB++ Output for Each Partner

You can now precisely control what design data is included in your ODB++ outputs for different manufacturing recipients. Choose which signal layers to export, decide how the netlist is handled (included, disabled, or neutralized), and control whether component data is removed or shared without properties.

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Altium Stories
Proper Voltage Built a Universal Battery Platform with Altium

Watch our latest customer success story to see how Proper Voltage partnered with Altium to accelerate high-power battery development for next-generation robotics. With our software, they streamlined collaboration, sped up design reviews, improved sourcing visibility, and reduced risk.

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New in Altium's Software
Improve Readability with Custom Pin Spacing

You can now control the vertical spacing of a pin’s designator and name with a custom margin. This setting can be applied globally via Schematic Preferences or adjusted individually in the Pin properties.

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How-To's
Does Decoupling Capacitor Placement Actually Matter?

Our new video tackles common questions about capacitor placement on a PCB. Expert Zach Peterson explains why placement is often less critical on multilayer boards with well-designed power and ground planes and shares the key insights most application notes leave out.

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Altium Stories
Teaching Power to Think - How Proper Voltage Accelerates Innovation with Altium

Watch the video where you can find how Proper Voltage centralized communication, synchronized ECAD–MCAD development, and gained early insight into supply chain risks using Altium’s connected design platform.

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New in Altium's Software
Detect Z-Axis Clearance Issues Earlier

The Z-axis clearance rule enables accurate verification of minimum interlayer copper spacing. It supports targeted constraints between net classes, differential pairs, and schematic parameter directives for advanced rule definition.

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How-To's
Fix Inconsistent Part Parameters in Your PCB Schematic

Watch our latest video to learn what parameterization really means, why getting the manufacturer name and part number right is essential, and how to quickly identify inconsistencies across your schematic components using Altium’s Parameter Manager tool.

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New in Altium's Software
Create IPC-Aligned Footprints with Less Effort

The default value for the Solder Mask Expansion rule has been updated to improve consistency across design environments. In both PCB documents and rule-driven solder mask expansion within PCB library documents, the default setting is now 0 mil, replacing the previous default of 4 mil.

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How-To's
Via Dispersion: Why Propagation Delay Changes with Frequency

Explore the concept of via dispersion and how it impacts propagation delay across frequencies. This tutorial walks through the math behind extracting delay from insertion loss and return loss S-parameters and explains why results can vary depending on your operating range.

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New in Altium's Software
Make Via Rule Configuration More Intuitive

Set precise control over your routing via styles with new rule settings in the Physical View. Define minimum, maximum, and preferred values for both diameter and hole size, and easily switch between constraint ranges or template-based definitions for faster, more flexible design.

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How-To's
Coplanar Ground Done Right: PCB Design Best Practices

When is coplanar ground actually useful and when does it provide no benefit at all? If you’ve ever wondered about this, check out our brand-new video where we tackle one of the most common questions in PCB design.

Embedded thumbnail for Import and Export with Modern Mechanical Models
New in Altium's Software
Import and Export with Modern Mechanical Models

We have expanded mechanical integration by adding support for SOLIDWORKS 2024 and SOLIDWORKS 2025 part models when importing 3D bodies into the design environment. This enhancement allows designers to work with the latest mechanical models created in SOLIDWORKS without the need for additional conversions or workarounds.

Embedded thumbnail for How to Input Via Delay in Altium for DDR Routing
How-To's
How to Input Via Delay in Altium for DDR Routing

In this video, we tackle a real viewer question about DDR3 routing across multiple PCB layers and show how via delay can silently eat into your skew margin before you’ve even finished routing, using Altium’s default 10-layer stackup as a reference.

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New in Altium's Software
Clearly Show Jumper Wires in Your Harness Designs

Support has been improved so that jumper wires connecting two cavities within the same connector are now properly shown in Layout Drawings, making the connector wiring easier to understand during documentation and review.

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How-To's
Why Datasheet PCB Guidelines Are Often Wrong

Watch our brand-new video where we tackle the persistent issue of outdated PCB design guidelines still found in datasheets and application notes from major semiconductor manufacturers. Drawing on viewer comments, real-world datasheet examples, and insights from industry experts, we examine why recommendations such as splitting analog and digital ground planes (an approach rooted in the 1980s) continue to circulate despite their potential to cause EMC failures, signal integrity problems, and costly redesigns.

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New in Altium's Software
Keep Your Harness Designs in Sync with Library Updates

The "Update From Libraries" feature has been enhanced to provide broader support for harness-related objects across both Wiring Diagrams and Layout Drawings. With this expansion, a wider range of harness components such as connectors, wires, splices, and associated attributes can now be synchronized directly with their corresponding library definitions.

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Integrating Requirements June 2025 Webinar
On-Demand Webinar Mai 28, 2025
Integrating Requirements into Your PCB Design Workflow
Join our webinar where you will learn about integrated requirements tools who can help you eliminate late-stage design changes, AI support through system requirements and integration of design requirements directly in PCB Design. Don't miss it, register now!
Streamlining Team Collaboration
On-Demand Webinar Apr. 17, 2025
Streamlining Team Collaboration in Industrial PCB Projects
Join us for our upcoming webinar to discover how Altium Designer and Altium 365 can transform your team’s collaboration and take your PCB design projects to the next level. Attend for a chance to win free access to the Altium 365 Training Bundle.
PCB CoDesign Webinar
On-Demand Webinar Jan. 24, 2024
Discover How Altium Designer 24 Revolutionizes Team Dynamics in PCB Design
Expand your collaboration skills and stay ahead of the curve with PCB CoDesign. Design teams often grapple with prolonged design cycles and coordination issues, leading to delays and inefficiencies. In the current landscape, design processes are hindered by fragmented collaboration, resulting in increased layout times and difficulties in synchronizing design updates.