In the world of Printed Circuit Board (PCB) design, performance and precision are key. Every decision—from the type of symbols you use to how they’re implemented—can impact not only the performance of your design but also its manufacturability and cost. In a recent tutorial video, we explored two effective methods for creating PCB symbols, while highlighting a common but often overlooked mistake that can lead to serious inefficiencies.
“Hello everyone, and welcome! Today, I’ll walk you through two different approaches to creating PCB symbols, while also shedding light on a common yet significant mistake designers often make,” our session began.
Method 1: Graphics-Based Symbols in Altium Designer
The first method demonstrated how to create symbols using graphics-based elements in Altium Designer, one of the most widely used PCB design platforms. By entering 2D layout mode and selecting specific areas, users can draw symbols using primitive shapes.
This technique allows for a high degree of customization in terms of shape, size, and resolution. However, it comes with a major caveat: graphics-based symbols can significantly increase the file size. The large number of vertices created during this process can be problematic, especially when working with complex or large-scale PCB projects.
Method 2: TrueType Fonts – A Leaner Alternative
The second method explored the use of TrueType Fonts (TTF), offering a more efficient and scalable solution. By downloading specialized symbol fonts from reputable sources like pcblibrary.co.uk, designers can install them directly on their system and use them within the PCB layout.
This font-based approach results in much smaller file sizes and better scalability without loss of visual quality. It’s a cleaner, more resource-efficient method that is especially useful in large projects where performance and file management are critical.
“Whether you choose graphics-based designs or TrueType font integration, it’s important to understand their impact on file size,” the presenter emphasized.
A Critical Comparison
The video then compared the two methods head-to-head. Removing the graphics-based symbol led to a dramatic reduction in file size, exposing the impact of excessive vertex usage. In contrast, deleting the font-based symbol showed minimal effect on the overall file, underscoring the efficiency of using text-based solutions.
“The key takeaway here is file size control,” the presenter noted. “It might seem minor, but file size can significantly affect performance, especially in larger projects.”
Best Practices for Symbol Creation
To avoid potential issues related to file size bloat, it’s recommended to adopt embedded font solutions where appropriate. By choosing the right symbol creation method and focusing on efficiency from the start, designers can:
-
Streamline their workflow
-
Improve software performance
-
Reduce errors during manufacturing
-
Deliver cleaner, more optimized PCB designs
Final Thoughts
In conclusion, understanding the pros and cons of different symbol creation methods is essential for modern PCB designers. By avoiding common pitfalls and embracing efficient design practices, you can enhance productivity and ensure your PCB projects are both high-performing and production-ready.
