![]() It is convenient to have orientation information on the silkscreen of the PCB, making it easily visible during assembly. To illustrate this point, simply ask yourself: which end of the diode should be connected to the more positive or more negative voltage? Well, is the diode used in a rectifier? Is it a Zener Diode? A TVS Diode? An LED? The point here is that the anode-cathode to positive-negative orientation depends upon the specific application for that diode. As such, it is always good practice to employ a clear labelling scheme on your PCB Silkscreen.ĭiodes and LEDs can be particularly troublesome when it comes to clear indication of their polarity. The communication to resolve these issues is normally very quick and efficient, but sometimes it can cost precious hours that could otherwise be spent working on your board. ![]() If our engineers run into any uncertainties or ambiguities, we always reach out to you for clarification before proceeding with the PCB Assembly Process. Part of our verification procedures include an early-stage DFM Check before we begin populating your bare boards with components. ![]() Let’s take a look at the case of LEDs and other types of diodes.īittele’s industry-leading PCB Assembly Process builds verification into each and every stage of both PCB Fabrication and PCB Assembly. You might be surprised how much the indications built into your PCB itself can influence that turn time. At Bittele Electronics, our goal is to get every single PCB into your hands in perfect working order with the minimum PCB Turnaround Time. It is easy to get wrapped up in the details of the more complex portions of your board, but always be careful that you do not neglect clarity for the simpler, run-of-the-mill parts. One of the most important aspects of PCB design is clear and consistent labeling. How to Indicate Placement Orientation of Diodes and LEDs on Your Boards
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