Best Free Websites to Download Electronic Footprints and Symbols for PCB Design

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#1 21680297 18 Jul 2018 23:31

Justin Wilcke Justin Wilcke

Anonymous

Post #1
21680297 18 Jul 2018 23:31

What is the best website to download footprints and symbols for free?

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#2 21680298 19 Jul 2018 15:23

Richard Gabric Richard Gabric

Anonymous

Post #2
21680298 19 Jul 2018 15:23

For what? There are all sorts of formats that depend on the package the footprints and symbols are to be used in. Some come from the chip vendors, some from the chip sellers, Digikey, for example, and some come from the software package supplier themselves.A bit more information would help.Additionally, you can create your own footprints based on the free PCB Libraries Inc. software to the IPC-7351 standard.Cheers,Richard
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#3 21680299 19 Jul 2018 23:22

Jason Betournay Jason Betournay

Anonymous

Post #3
21680299 19 Jul 2018 23:22

Justin,What CAD package are you using? Everyone has their own repositories. As Richard says, I would recommend creating your own footprints. Downloadable footprints are notoriously unreliable and often get a bit "creative" with the standard footprints. I point to Eagle CAD's definition of an 0402 as exhibit A. If you do download the footprint you need, I strongly recommend you go through each measurement and check dimensions. Nothing quite as unpleasant as getting a fresh PCB and having the assembly house kick it back to you because everything is 0.5mm shifted to the left. Watch out for snakes,Jason Betournay
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#4 21680300 20 Jul 2018 04:01

Duane Benson Duane Benson

Anonymous

Post #4
21680300 20 Jul 2018 04:01

Checkout snapeda.com. The offer a whole lot of footprints for free, cover a lot of CAD software, and have some paid expedite services.If you make your own footprints, don't assume anything. Get the datasheet and follow their dimensions as exactly as possible. Being a manufacture, I give two caveats to that statement and those are 0.4 mm pitch micro BGAs and QFNs. The standards and the component manufacturers aren't always up to date with those two form factors.Read these articles for some background:
https://www.eeweb.com/profile/duane-benson-2/...file/duane-benson-2/articles/0-4mm-pitch-bgas
#5 21680301 10 Oct 2018 14:18

Mike Dong Mike Dong

Anonymous

Post #5
21680301 10 Oct 2018 14:18

Hi Justin Wilcke,I often buy some PCB boards on PCBGOGO, and occasionally there are some PCB assembly requirements.They also provide some services about sourcing parts.Hope this helps for you.
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#6 21680302 10 Oct 2018 17:34

PeterTraneus Anderson PeterTraneus Anderson

Anonymous

Post #6
21680302 10 Oct 2018 17:34

Use a Gerber-file viewing program to check your artwork before submitting for fabrication.
#7 21680303 09 Dec 2019 12:09

Joe Semos Joe Semos

Anonymous

Post #7
21680303 09 Dec 2019 12:09

I agree with you Dude and Lets check is it your ans is correct or not. Thanks for your Answer.
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Topic summary

The discussion addresses the best free websites to download electronic footprints and symbols for PCB design, emphasizing the importance of format compatibility with specific CAD software. It is recommended to verify footprint dimensions against datasheets due to frequent inaccuracies in downloadable libraries. SnapEDA.com is highlighted as a prominent free resource offering extensive footprints compatible with various CAD tools, alongside paid expedited services. Users are advised to consider creating custom footprints following IPC-7351 standards using tools like PCB Libraries Inc. Special caution is noted for complex packages such as 0.4 mm pitch micro BGAs and QFNs, where manufacturer and standard data may be outdated. Additional advice includes using Gerber file viewers to validate artwork before fabrication. Some responses mention PCB assembly and sourcing services from PCBGOGO, though this is peripheral to footprint libraries.
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Best Free Websites to Download Electronic Footprints and Symbols for PCB Design

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