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???
09/26/06 15:41
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 		 #125092 - Thanks!
Responding to: ???'s previous message
Steve said:
If the case is epoxy, Formic acid will etch it. And your PCB

I will test it. Thank you!

Steve said:
I'd bead-blast them, if they are not on the boards already.

Won't they suffer from ESD, means generation of charges and electrical fields due to friction?

Kai

List of 45 messages in thread
TopicAuthorDate
How to remove the stamp from chip package?            01/01/70 00:00      
   paint the chip            01/01/70 00:00      
      Can be removed?            01/01/70 00:00      
         I am afraid...            01/01/70 00:00      
            more ideas            01/01/70 00:00      
               Yes, but...            01/01/70 00:00      
                  let me elaborate on the idea...            01/01/70 00:00      
            If its a ceramic package            01/01/70 00:00      
               Thanks            01/01/70 00:00      
            Yes..            01/01/70 00:00      
               epoxy            01/01/70 00:00      
                  Thanks!            01/01/70 00:00      
                     ESD and bead blasting            01/01/70 00:00      
                        Chips are already soldered onto the board            01/01/70 00:00      
                           Not BGA            01/01/70 00:00      
                              Thanks, Joseph!            01/01/70 00:00      
                  Formic acid doesn't work for me!            01/01/70 00:00      
               epoxy or novalac            01/01/70 00:00      
                  Yes, high tech epoxy...            01/01/70 00:00      
         some paint works            01/01/70 00:00      
            Yes, that's what I'm looking for!            01/01/70 00:00      
   Stamp?            01/01/70 00:00      
      marking            01/01/70 00:00      
      The printing on the package, the marking            01/01/70 00:00      
         Sand paper, cloth emery sheet            01/01/70 00:00      
            Thanks            01/01/70 00:00      
               How about very fine grit emery cloth damp or wet?            01/01/70 00:00      
                  Yes, this is a good idea!            01/01/70 00:00      
                     Methy-Ethyl Ketone Peroxide?            01/01/70 00:00      
                        Plastic            01/01/70 00:00      
                        MEKP            01/01/70 00:00      
   I remember that situation ...            01/01/70 00:00      
      abrasive and ESD            01/01/70 00:00      
      back in the old days ...            01/01/70 00:00      
         I may be being stupid but...            01/01/70 00:00      
            there are reasons ...            01/01/70 00:00      
               Always a pleasure            01/01/70 00:00      
         While in memory lane...            01/01/70 00:00      
            We did that at IBM, too.            01/01/70 00:00      
            Special companies do it            01/01/70 00:00      
               You can get stock numbers on anything            01/01/70 00:00      
   Use a Dremel            01/01/70 00:00      
      It's important they don't notice it!            01/01/70 00:00      
         It didn't blister            01/01/70 00:00      
      I will have a look at it            01/01/70 00:00      

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