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???
09/26/06 15:44
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 		 #125093 - Thanks
Responding to: ???'s previous message
John said:
For few quantities, you can place the chips in conductive sponge (if they have legs) and use fine or extra fine sand paper or emery cloth to erase them.

Thank you, John.
The problem is, that I have read, that such abrasive methodes can cause damage to the die, due to internal ESD.

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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