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?

  • 3
    \$\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
  • 1
    \$\begingroup\$ Just like the holes around stamps ! \$\endgroup\$
    – Grabul
    Commented Oct 3, 2015 at 11:26
  • 1
    \$\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

1 Answer 1


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)


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.