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I have received an NVIDIA Jetson board this week and it has the following edges near the mount holes:

Jetson edge

I did a quick search on the internet but was only able to find similar edges on the Raspberry Pi Compute Module:

Raspberry Pi Compute Module

Could you please explain me why would you put those edges? I think it is for a better grip when mounted, but I fail to understand against which object the board will grip. Also, is there a standard for that, i.e. how do I design one for my boards in future if needed?

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    \$\begingroup\$ No purpose as such. These "sharp edges" are what is left over when the PCBs were manufactured in a panel using break-routing /break-off tabs. \$\endgroup\$
    – og1L
    Commented Oct 3, 2015 at 11:11
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    \$\begingroup\$ Just like the holes around stamps ! \$\endgroup\$
    – Grabul
    Commented Oct 3, 2015 at 11:26
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    \$\begingroup\$ Have a google search for "pcb mouse bites" \$\endgroup\$
    – efox29
    Commented Oct 3, 2015 at 11:27
  • \$\begingroup\$ Thanks @efox29, I immediately found blogs.mentor.com/tom-hausherr/blog/tag/mouse-bite that has all information I might need beyond the SE answer! \$\endgroup\$ Commented Oct 3, 2015 at 14:14

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PCBs are manufactured on a standard sized panel. Those sharp edges are often referred to as "mouse bites" and they are leftover after depanelization.

Here they are still hooked together:


(source: xess.com)

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