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How to Apply a Solder Mask Opening on a PCB
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- čas přidán 15. 08. 2024
- *How to Apply a Solder Mask Opening on a PCB*
Discover how to apply a solder mask opening on a PCB using Altium Designer. In this tutorial, Zach Peterson from Altium Academy will guide you through the steps to open solder masks on large copper pours, using a variety of methods. Zach also walks you through which method is appropriate under which circumstance.
*Key Takeaways:*
- Understanding solder mask openings
- Different tools in Altium Designer for PCB layout
- Practical examples and viewer questions answered
Follow along with your copy of Altium Designer and enhance your PCB design skills today! Need a copy of Altium Designer? Get a free trial here: www.altium.com...
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The Altium Academy is an online experience created to bring modern education to PCB Designers and Engineers all across the world. Here you can access a vast library of free training and educational content covering everything from basic design to advanced principles and step-by-step walkthroughs. Join industry legends as they share their career knowledge, review real-life design projects, or learn how to leverage one of Altium's leading design tools. No matter your level of experience, the Altium Academy can help you become a better Designer and Engineer!
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0:00 Intro
0:37 Applying Solder Mask Openings: Fills
5:16 Solid Region Tool
6:27 How to Apply Solder Mask Opening Rules
7:31 Applying Solder Mask Openings: Polygons
#PCBDesign #AltiumDesigner #SolderMaskOpening
Thank you sir, for explaining it well..👍
I think a nice follow-up to this might be making footprints for shielded cans and driven guards, both of which require solder mask openings. Or was this covered in PCB distributed elements? Anyway, since I use Kicad, I usually just pop to the solder mask layer and draw the opening directly.
A good adjunct would be how to specify whether the opening is to be HASL, ENIG, or whatever on a board with multiple treatments for different bits of exposed copper.
We did this question in another video, stay tuned
@@Zachariah-Peterson Did you also cover the best way to open solder mask over traces, for instance on high frequency RF traces where you don't want the solder masks Dk to influence the impedance of your trace at high frequencies? You often want the solder mask opening to be above the trace and also the shielding vias coplanar ground around the RF trace. The problem with setting a custom solder mask opening rule on the track is that it opens the mask at the ends of the track too. I have been using fill regions to open the mask but it becomes very tedious to do this around series and shunt components since you usually want to keep a solder dam around pads. Maybe this is something Altium cannot do easily, but if it can, it would be great to have a tutorial.
Thanks
Love the vids Zach! Im “cramming” for some big design reviews.
Could you make a similar video on solder paste? Ive struggled with tiny ESD protection packages floating on pads. The datasheet footprint is sometimes missing the paste dimensions and im not sure what the correct amount is without going through trial and error.
If its a part with a large center gnd/heatsink contact normally need to shrink paste down to 70-80% of that pad size and if there is large difference between it and other pads so it floats part above them then break the paste up into several smaller areas with gaps so solder has to flow together to fill underneath at same time part pads are forming fillets. The gaps allow the flux to escape without forming voids. If you have thermal vias in the that center pad make sure you plug them and try to align paste in between them so they don't steal the solder. Still might have to experiment some to get it right but following these tips should get you most of the way there.
How about making text in copper (gold enig) and open the soldermask for each letter? Wouldn't that make some shiny text!
Get some interesting effects by doing normal silkscreen text and then put bolded copy into unmasked copper underneath. Done that with copyright/version info or logos for some really cool looks on projects😊
Hello.
Always really appreciated for amazing high-level educational videos!
But could you make a video of explaining PCB layout technique on high voltage, especially 3-wired 230VAC mains?
I'm trying to use linear step-down transformer to make PCB layout of linear power supply.
While searching the internet, many people says "You must keepout any conductor around your high-voltage mains traces.", but there is no consistent answer about 'Keepout distance'.
Some people say that clearance around mains voltage trace should be at least 2mm, while other says 3.25mm, 4mm, or even 10mm.
I'm really confusing how much I should keepout any copper conductor from mains voltage traces.
The fact nothing clear to me, hinders idea of properly layout to grounding and EMI shielding of high voltage traces.
Also in multi-layer PCB, should I remove every copper conductor at below high voltage traces?
It would be huge help if I could see video of this subject.
Thank you.
The subs are talking about "copper pore" instead of "copper pour". This video is intended as an "educational" video from the leading producer of EDA tools. There should be enough marketing budget to get a proofreader that actually knows the topic...
I'm guessing they just use automated speech to text that CZcams does for them which can also do language translations but as you noticed it makes mistakes.