As a circuit board manufacturer, we are often asked about the difference between IPC Class 2 and Class 3. Class 1 does exist although we rarely produce boards that fall into this classification. Most of the times, even if the end-use of the product only requires Class 1, we will make it Class 2 just to ensure a better performance. This article will help you understand the different design rules for IPC Class 2 and Class 3 circuit boards.
A transmission line should have a uniform characteristic impedance. Any variation or discontinuities to the impedance causes signal reflection and distortion. Continue reading “How Impedance Discontinuities Affect Signal Integrity”
At some level of circuit complexity, turning to an architecture with blind and buried vias will result in better yield and lower cost than would a through-hole design. In this presentation, we discuss several design examples and illustrate the relative costs and benefits of different architectural approaches.
For PCB designers and engineers, optimization is key. Optimization of time, cost, and even effort. Sierra strives to provide customers with high-quality PCBs and excellent service. This includes best practice tips for designers. When designing your next circuit board, you need to watch out for some crucial cost drivers.
Are errors in your BOM causing delays? Are your component quantities and reference designators mismatched? Sierra has a free tool that will speed up your entire PCB process. Continue reading “Introducing Sierra’s BOM Checker!”
On May 17 and 18, Sierra Circuits hosted its first workshop at the Levi’s Stadium. PCB expert Robert Feranec led the two-day training on PCB Board Layout Design Engineering. Watch our video from the event!
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