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Thought Leadership
Layer Management as a Circuit Board Design Tool Priority
Rome wasn’t built in a day, and the same could be said for printed circuit boards. PCBs are similar to cities in that they contain pathways connecting components. Components have dimension into the surrounding air space, as well as into the thickness of the board itself. Hidden subsystems similar to underground wiring and cityscape piping reside within the thickness of the boards. Printed circuit boards mimic cities with their layers of
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Design Rules for Large BGA Fanout
I have known people during my career who insisted on hand-routing every PCB design that they worked on. They would say that their manual routing performed better, looked better, and was just better in general. I’m not going to argue one way or the other on that, but I will say that there is one thing that can not be argued with; all of that manual routing took them a much longer time to complete than if they had used automated routers. With today
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Asymmetric Striplines in Your Next Multi-layer PCB
The beauty of symmetricity in art, science, and nature, in general, is something of a wonder. The visual balance between elements in a painting or drawing can make or break a piece of artwork. PCB design is as much art as it is engineering, and symmetricity plays as much of a technical role as it does an aesthetic role. Ever since its humble beginnings as a replacement for high frequency coaxial cables and waveguides, striplines are a mainstay
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Building Your Next Multi-Level Bill of Materials
My wife and I always argue about what goes on the grocery list each week. I’m a total carnivore, while she prefers I get everything we need from local farmers. Planning out our shopping trips in multiple lists does more than just allow us to plan our Saturdays coherently, it helps ensure marital bliss. Any PCB that you intend to manufacture will need an associated bill of materials. If you’re building a complex product that includes multiple sub
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Managing 3D Electrical MCAD/ECAD Models for Data Transfer
Communication is tricky when oppositional semantics fail to play well together. This sentence is a good case in point. When ill stated, information is rarely understood. The same goes with software infrastructures. Many do not play well together when information in one is defined differently in another. 3D models of components for use by mechanical and electrical CAD programs are historically represented quite differently across platforms. This
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From Mechanical Drilling to Laser Drilling of Microvias
The first PCBs I made as a young engineer were pretty simple, with wires used to connect components on the top side of the board. Once things got more complicated, board space became a real consideration, and components were packed too close for comfort. I eventually had a tangled mess of wires on the top and bottom sides of the board connecting multiple components. Later on, I learned more about using design software for multilayer design. Using
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Via Size Calculators: Sizing Vias in Your Next Multilayer PCBs
If you’ve ever opened up an old cell phone, you’ve likely noticed the intricate dance between traces and vias. These elements tango with the signal traces on inner board layers, and sizing them properly is as much art as it is science. Your vias are critical for accessing the inner layers in a multi-layer PCB. So how do you choreograph the balance between your vias, traces, and components? Your vias should be sized appropriately if they are to be
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SMD LEDs in Your PCB and Your Bill of Materials
Unless you refuse to get out of the house on a Friday night (like me), you’ve probably been at a concert and had the privilege of being bathed in multi-colored lights from the stage. LED arrays provide a great concert experience, but I think that learning what makes them tick is far more interesting. Kingbright (KPKF) surface-mounted LEDs are probably my favorite LED to use on a PCB. They look clean on your board and they are available from a
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Split PCB Plane Pours are Partial to Carefully Managed Connections
James Madison said that “philosophy is common sense with big words.” Big words can produce a mess if applied with the wrong syntax. Similarly, the ability to produce intricate PCB designs requires extraordinary vision, each minute step exquisitely accomplished through common sense. Common sense and, if you’re lucky, elegant design tools. PCB design tools able to make common sense from complicated layout rules promote efficient development
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Managing Net Connection Order from Schematic to Layout
When I first started designing printed circuit boards, it was a very unorganized process. We would create the schematics in our department, and then the system administrators would work their voodoo and transfer all that data from us into the layout department. The layout guys were an even bigger mystery, working all hours of the night and day on these complex Unix machines that supported their CAD layout tools. We would communicate our design
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Using Library Search Features for Easier Component Selection
Components are those critical elements in your PCB that keep it ticking along and doing its job. Your component libraries contain all the information about available components in a single location, making it easy to add components to your board and use component information with your simulation and rules-checking features. Other design software packages like to separate these features into different programs, or they force you to use an external
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EMI in Your High Speed PCB Design: Understand the Signal Rise Time
Learn more about your high speed design and how to deal with switching speed, rise time, and EMI in your high speed PCB layout.
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Layout Guidelines for Embedded Power Supplies
I don’t get out to raucous parties as much as did in my 20’s. The thought of yelling over other people just to have a conversation is about as enticing as getting a tooth pulled. Crosstalk doesn’t just kill the mood at a party, it can ruin the functionality of electronic systems. Most PCB designers worry more about crosstalk between signals traces, but your power supply and power components can have an even greater impact. Thankfully, some simple
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Effective Supply Chain Management through PCB Libraries and Supply Chain Integration
If only sourcing PCB components worked like e-commerce. Recommendation engines are great in that they can help you decide what to buy when your preferred item is not available. Most PCB design packages don’t have this type of functionality, which would save a massive amount of time when planning a manufacturing run. Whether you’re sourcing electronic components or some other parts for your next product, you’ll need access to updates supply chain
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Make Sure the PCB Layout Software You Use has All the Tools You Need
When I was learning to fly part of my training included a long cross-country trip to practice the fine art of aerial navigation. Being a student pilot I, unfortunately, got a little lost, and before I got myself headed in the right direction again it was much later in the day than it should have been. Here I was; a student pilot that was lost flying an airplane and it was getting dark. I have never felt so alone in all of my life. Since I’m
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Project Release Management within PCB Design Software
You’ve worked night and day to get your PCB design done and finally, the last trace has been connected, the last silkscreen reference has been tweaked, and the final DRC has passed. It’s time to call it a weekend, right? Wrong. You’ve still got a boatload of work to do to get all of your output files created for your manufacturers. A lot of PCB release design tool vendors provide different mechanisms for making the creation of output files easier
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SPICE Simulator Online Adaptation to Your Expertise
Some of us have a habit of trying to be experts at everything. The one thing I have had to learn time and again, whether in software or hardware, is that there is no need to constantly reinvent the wheel. When you need to get an idea of how your device operates, you don’t need to build a simulation program from scratch. Thankfully, there are a number of tools that make it easy to simulate the behavior of your circuit, and you don’t need to be an
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