Free Trials

Download a free trial to find out which Altium software best suits your needs

Altium Online Store

Buy any Altium Products with few clicks or send us your quote to contact our sales


Download the latest in PCB design and EDA software

  • Altium Designer

    Complete Environment for Schematic + Layout

  • CircuitStudio

    Entry Level, Professional PCB Design Tool

  • CircuitMaker

    Community Based PCB Design Tool


    Agile PCB Design For Teams

  • Altium 365

    Connecting PCB Design to the Manufacturing Floor

  • Altium Concord Pro

    Complete Solution for Library Management

  • Octopart

    Extensive, Easy-to-Use Component Database

  • PDN Analyzer

    Natural and Effortless Power Distribution Network Analysis

  • See All Extensions

    World-Renowned Technology for Embedded Systems Development

  • Live Courses

    Learn best practices with instructional training available worldwide

  • On-Demand Courses

    Gain comprehensive knowledge without leaving your home or office

  • Altium 365 Viewer

    View & Share electronic designs in your browser

  • Altium Designer 20

    The most powerful, modern and easy-to-use PCB design tool for professional use


    Annual PCB Design Summit

    • Forum

      Where Altium users and enthusiasts can interact with each other

    • Blog

      Our blog about things that interest us and hopefully you too

    • Ideas

      Submit ideas and vote for new features you want in Altium tools

    • Bug Crunch

      Help make the software better by submitting bugs and voting on what's important

    • Wall

      A stream of events on AltiumLive you follow by participating in or subscribing to

    • Beta Program

      Information about participating in our Beta program and getting early access to Altium tools

    All Resources

    Explore the latest content from blog posts to social media and technical white papers gathered together for your convenience

    Altium Online Store

    Buy any Altium Products with few clicks or send us your quote to contact our sales


    Take a look at what download options are available to best suit your needs

    • Documentation

      The documentation area is where you can find extensive, versioned information about our software online, for free.

    • Training & Events

      View the schedule and register for training events all around the world and online

    • Design Content

      Browse our vast library of free design content including components, templates and reference designs

    • Webinars

      Attend a live webinar online or get instant access to our on demand series of webinars

    • Support

      Get your questions answered with our variety of direct support and self-service options

    • Technical Papers

      Stay up to date with the latest technology and industry trends with our complete collection of technical white papers.

    • Video Library

      Quick and to-the-point video tutorials to get you started with Altium Designer

    Collaborative Design Software: Create a Schematic Symbol for any Component

    Altium Designer
    |  April 30, 2018

     Electrical schematic symbols

    We’ve all been knee deep in a schematic capture session when we are suddenly hard-walled by a missing component in our project library. You check other libraries to see if the part exists but find everything except success. What do you do?

    Thankfully, these situations are mitigated by Altium Designer’s software solutions. With tools designed for you to work as intuitively and efficiently as you can, you will be cruising in no time.

    Creating your own schematic symbol is often what is required to get through a PCB project. This quick tutorial outlines how simple the process is for creating a schematic symbol for the PIC24FJ64GA004 microcontroller.

    Adding the Schematic Library

    We are adding on to a previous article that took us through creating a PCB footprint for this MCU (that we’ll likely need if we continue to design with this part and schematic).

    As with any new design or schematic, the first step in getting a fully functioning schematic symbol of our MCU is to add a new schematic library to our project.

    Navigate to ‘Project’ > ‘Add New to Project’ > ‘Schematic Library.’

    Altium  schematic Navigate here to open a new schematic .

    You’ll then get to a screen that looks like this:

    Altium  schematic What the schematic appears as.

    You can quickly place any number of symbols you want to represent a block of our component. In this case, it’ll be a basic rectangle as this is common for MCU representation.

    Navigate to ‘Place’ > ‘Rectangle’ to place your rectangle near the center of the page.

    Altium  schematic Place a rectangle in the center of the page.

    Simple enough, right? Now we’ll move into component designators and being able to keep track of your design notes.

    Adding a Component Designator

    For making schematic review easier on 3d party viewers (manufacturers, engineers, ect.), we’ll place some part info on the symbol.

    Navigate to ‘Place’ > ‘Text String’ and place it in the center of the rectangle. You can rename it to whatever part number is required for identification. In this case, we’re going to label it as ‘PIC24FJXXXX.’

    Altium  schematic Add text to the symbol to make review easier.

    Up next is the fun part!

    Placing Pins

    This is the time in which you should have a datasheet handy for pin IDs. Placing pins is, of course, entirely up to your discretion, however, I like to take a look at what my datasheet suggests for pin placement and nomenclature.

    Based on what we are looking for in the current schematic, the following pin placement example is all we are going to add in. This will help us to not continuously cross lines when wiring the schematic.

     schematic of PIC24FJXXXWhat we are going to replicate in Altium .

    To begin your pin placement, navigate to the upper toolbar, or to ‘Place’ > ‘Place Pin’.

    Before you left click anywhere, ensure both the orientation and information is correct. You can always edit after, however, I like to quickly get the info in as I place.

    The small ‘X’ at the end of the pin is where you are going to attach other schematic symbols. Ensure this is on the outside of your symbol, otherwise, lines will be traveling through the symbol on the sheet (which may not be desired).

    To change the orientation of the pin, simply press ‘Spacebar’. Easy.

    To change the info of each pin as you place it, simply press ‘Tab’ and the properties tab will pause the placement and allow you to edit the desired designators. Here is what the end result will look like:

    Altium  schematic Final part definition.

    Once the symbol is finalized, we can now integrate it with our previously created PCB footprint!

    Adding a PCB Footprint to the Part

    To add a previously created footprint to the newly created schematic symbol, simply navigate to the button on the lower portion of the screen ‘Add Footprint’.

    Navigate to the library in which it is stored and select ‘OK’. And there you have it.

    Altium  schematic Footprint addition to the symbol

    You now have a fully functional part that can be placed on a schematic and a PCB!

    Getting bogged down with part libraries isn’t the greatest feeling, nor is having to create part symbols from scratch. Utilizing great features within Altium Designer, however, makes creating a schematic symbol a breeze.

    With the time you save and the freedom to design with any part (whether it’s in the library or not) will allow you to create nearly anything under the sun with ease. If you want to know more about how Altium Designer can make your design life easier, talk to an expert at Altium today.

    About Author

    About Author

    PCB Design Tools for Electronics Design and DFM. Information for EDA Leaders.

    most recent articles

    Back to Home