Laser Damaging ICs?

Discussion in 'Wireless & RF Design' started by mossman, Nov 14, 2014.

  1. mossman

    Thread Starter Member

    Aug 26, 2010
    131
    3
    I'm using a laser to etch patterns in an IC and am having high failure rates. Does a laser produce a large enough electrostatic field to damage an IC?
     
    Last edited: Nov 14, 2014
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    What kind of laser are you using?
    It can be the heat produced during the branding process that "burns" the IC.

    Bertus
     
  3. radiohead

    Active Member

    May 28, 2009
    474
    31
    Etching lasers generate too much heat for most ICs. Remember the IC itself is a tiny wafer of silicon (about the size of a typed dot (period). The connections are made in the epitaxial plastic from the wafer to the IC pins using ultra-thin conductors. If you heat the IC up too much, the wire or the bond to the wafer may be compromised or damage to the chip itself. Try old-fashioned engraving or milling.
     
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