PCB manufacturing experience summary (1)

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PCB manufacturing experience summary (1) [Copy link]

I. Parameter settings 1. Component silk screen font size: stroke, height 32mil, width 6mil. 2. Via size: diameter 0.6mm, aperture 0.3mm. 3. Antenna routing should be as straight or curved as possible: width 0.8mm. 4. The power line should be as wide as possible, and the same applies to the motor, because the current flowing through it is large. Please refer to "PCB Design Notes (General Edition)" for details. 2. MCU power supply routing Here we use the inner loop routing of a big guy during the internship, see the figure below: Supplement: When placing components, the power supply filter capacitor of the MCU should be placed close to the chip. 3. Punching, windowing, and proofing positioning point production 1. Punching: Draw the corresponding graphics (such as a circle) on the silk screen layer (such as Top Overlay) in the PCB, select the graphics->Tools->Convert->Create Borad Cutout From Selected Primitives; 2. Windowing: Draw the corresponding graphics (such as a circle) on the silk screen layer (such as Top Overlay) in the PCB, select the graphics->Tools->Convert->Create Cutout From Selected Primitives. 3. Positioning points: First, place a pad at the same coordinates of the TOP LAYER and BOTTOM LAYER (set to a 1mm*1mm rectangle, with a paste expansion value of -1mm and a solder mask expansion value of 1mm), and then open windows around it. Fourth, PCB rulesCustomization The following is the part of the rules that I personally changed in the project, for reference only: 1. Electrical rules (1) Safety spacing rules (clearance): set to 6mil. 2. Routing rules (1) Routing width (width): minimum 10mil, preferred 10mil, maximum 100mil. (2), Routing via style : Diameter 0.6mm, hole diameter 0.3mm. (3), Routing via style : Diameter 0.6mm, hole diameter 0.3mm. 3. Inner electrical layer rules (plane rules) (1). Connection type of power plane connect style: Direct connection (Direct Connect). (2). Polygon connect style: Direct connection (Direct Connect). 4. Manufacturing rules (1) Minimum annular ring: minimum 1 mil, maximum 200 mil. (2) Minimum solder mask sliver: 0 mil. (3) Silk screen over component pads: 0 mil. (4) Silk to silk clearance: 0 mil. V. Commonly used and easy to remember shortcut keys 1. Q: Switch units (mm-mil). 2. G: Switch jump grid to facilitate component placement. 3.Ctrl+End: The mouse returns to the origin of the coordinates. 4.Ctrl+M: Measure distance. 5.Ctrl+F: Find components. 6.Shift+Spacebar: Change routing mode. Of course, we can also customize shortcut keys, operation: right click on the blank space of the toolbar -> customize (customize) Supplement: Common PCB design rules introduction URL: http://blog.sina.com.cn/s/blog_14e0583260102xhq3.html AD common operations and shortcuts Website: https://blog.csdn.net/best_fiends_zxh/article/details/53233213

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