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Printed circuit boards, or PCBs, are everywhere, from game consoles to medical devices. They\u2019re like the streets of a busy city, connecting signals between different stops (or components). But sometimes, these streets need to go up or down levels, not just across the surface. That\u2019s where vias come in. If you\u2019re working in Altium Designer or with any <\/span>custom PCB manufacturer<\/span><\/a>, understanding vias will help you make better boards that work and last.<\/span><\/p>\n Think of a via as a tiny tunnel. It allows electrical signals to travel from one layer of the board to another. Without vias, a PCB would be flat, with all parts fighting for the same limited space. Vias open up new paths below the surface, making compact, multi-layer projects possible.<\/span><\/p>\n There are several types of vias, but they all share a standard function: connecting different layers of a circuit. In Altium PCB design, you get complete control over how and where these vias are placed.<\/span><\/p>\n Through-hole via: the most common type. This hole goes from the top of the board all the way down to the bottom. It\u2019s used when you need to connect everything, like a staircase that connects every floor.<\/span><\/p>\n As electronics become smaller and more complex, the need for layered connections increases. Vias help designers build boards that combine multiple circuits without occupying extra space. Without vias, you\u2019d need huge boards, or lots of messy wires, to get the same function.<\/span><\/p>\n In practical terms, this means:<\/span><\/p>\n Altium Designer is one of the most popular tools for circuit board PCB design. It gives you a layout where you can add and adjust vias exactly where you need them. Whether you work directly with a PCB manufacturer or a flex circuit board manufacturer, Altium\u2019s software helps you meet their requirements.<\/span><\/p>\n You start by drawing the shape and layers of your board, then add components such as chips, sensors, and connectors. Vias are placed in spots where signals need to jump from one layer to another. Altium PCB design makes this step easier by letting you preview, adjust, and test via placement before you ever build a board.<\/span><\/p>\n Before dropping parts on your board, sketch a rough plan of how signals will move between layers. Try to keep paths short. Vias are helpful, but too many can create problems. Think of them like stairways, easy to use, but too many in one spot create a traffic jam.<\/span><\/p>\n Don\u2019t use a buried or blind via unless necessary. Through-hole vias work well in most designs and are easier (and less expensive) for your PCB manufacturer to produce. Reserve blind or buried vias for tight spaces or special signal paths.<\/span><\/p>\n Every PCB manufacturer and flex circuit board manufacturer has guidelines for via sizes. Too small, and they might not be able to make them. Too big, and you waste space or risk crowding other parts. Check your manufacturer\u2019s rules before starting your Altium PCB layout.<\/span><\/p>\n A good rule of thumb is to keep vias as small as safely possible, but leave enough room for reliable connections.<\/span><\/p>\n To help deliver stable power or create effective shielding from unwanted signals, place rows of vias (sometimes referred to as via fences) between specific layers. This strengthens the circuit and blocks interference.<\/span><\/p>\n Vias under chips or connectors can weaken the solder joints or the board itself. If you must place a via near a component, double-check your design rules in Altium and obtain your manufacturer\u2019s feedback.<\/span><\/p>\n For flexible circuits, ask your flex circuit board manufacturer for advice. Bending the board can break vias placed right on the fold lines. Keep vias away from these areas to prevent cracking.<\/span><\/p>\n Altium Designer\u2019s built-in checks catch many mistakes. Use the Design Rule Check (DRC) tool to identify vias that are too close, too large, or in the incorrect location. Fixing these issues in software saves time and money in the long run.<\/span><\/p>\n Bringing your design to life means sharing files with a custom PCB manufacturer or flex circuit board manufacturers. Here\u2019s how to make that step smoother:<\/span><\/p>\n If you work together, you\u2019ll get a board that matches your plan and stands up to use.<\/span><\/p>\n What are the most common mistakes for new designers?<\/span><\/p>\n Placing too many vias too close together, making them too small, or failing to follow the manufacturer\u2019s guidelines.<\/span><\/p>\n How do I choose by type?<\/span><\/p>\n Through-hole for basic needs, blind or buried if space is a concern. Microvias are for ultra-dense, high-end boards.<\/span><\/p>\n Can I overuse vias?<\/span><\/p>\n Yes. More isn\u2019t always better. Plan, only use what you need, and test your signal paths in Altium.<\/span><\/p>\n Does it matter who makes my PCB?<\/span><\/p>\n Yes. Not all manufacturers can accommodate every type of via or size, especially for advanced designs. Ask questions early.<\/span><\/p>\n Creating great printed circuit boards requires paying attention to even the most minor details, including vias. The way you set up, place, and size your vias in Altium PCB design affects not only how well your board works, but also how long it lasts and even how much it costs. Start with a clear plan, utilize best practices, and always verify with your custom PCB manufacturer or flex circuit board manufacturer, like Blind Buried Circuits, before sending out your final files. Good design and teamwork will help bring your best ideas to life, one reliable connection at a time.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":" Printed circuit boards, or PCBs, are everywhere, from game consoles to medical devices. They\u2019re like the streets of a busy city, connecting signals between different stops (or components). But sometimes, these streets need to go up or down levels, not just across the surface. That\u2019s where vias come in. If you\u2019re working in Altium Designer… Continue Reading What Is a PCB Via?<\/span><\/h2>\n
Types of PCB Vias<\/span><\/h2>\n
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Why Vias Matter for Circuit Board PCB Design<\/span><\/h2>\n
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The Role of Altium Designer<\/span><\/h2>\n
Best Practices for Using Vias in Altium PCB Layout<\/span><\/h2>\n
Plan Layer Connections Early<\/span><\/h3>\n
Choose the Right Via Type for Your Needs<\/span><\/h3>\n
Watch Via Size and Spacing<\/span><\/h3>\n
Group Vias for Power and Ground Connections<\/span><\/h3>\n
Avoid Placing Vias Under Important Components<\/span><\/h3>\n
Limit Number of Vias on Bend Areas in Flex PCBs<\/span><\/h3>\n
Test Your Design with Altium\u2019s Tools<\/span><\/h3>\n
What Not To Do With Vias<\/span><\/h2>\n
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Working with Manufacturers<\/span><\/h2>\n
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Common Questions<\/span><\/h2>\n
Final Words<\/span><\/h2>\n