I'm really not trying to be wise, but what would be the reasons
for removing IC marking?
How on earth would one control mass removals and remarkings?
My QA mindset just shuddered.
Jan Pelchat
(Stone's throw from Keene)
______________________________ Reply Separator _________________________________
Subject: Re: [TN] IC coating
Author: Russ <[log in to unmask]> at 0UTG0ING
Date: 9/8/98 12:26 AM
Justin,
Try Markem Corp. in Keene, New Hampshire, USA. They make the inks used to
mark the components and they have "body coating" inks.
http:www.markem.com
The markings sometimes can be (barely) read through not because the inks are
not dark enough but because of thickness issues. If you want no
traceability on your components then use microabrasive blasting. For
ceramic use aluminum oxide, for gold use sodium bicarbonate, and for plastic
I think you use walnut shells. Be sure your system is ESD safe and mask the
leads or else you will ruin the solderability. There are several companies
in California who specialize in removing markings in high volume. HGM in
San Jose, California is one I remember. They also do body coating and
re-marking. Prime Solutions in Fremont or Milpitas, California is another.
Regards, Russ
-----Original Message-----
From: Justin Braime <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Monday, September 07, 1998 4:30 PM
Subject: [TN] IC coating
>Morning all,
>I'm looking at hiding the identity of some ICs on a particular product, and
>currently the suggestion is to grind off the top of the IC (ouch!!) , am I
>right in thinking there is some kind of coating that will do the same
>thing, and that is not removable??? If anybody knows of any particular
>product can they please let me know......
>
>Thanks in advance
>
>Justin Braime
>Production Engineering
>Alpine Electronics of New Zealand Ltd
>------------------------------------------------------------
>15a Vestey Drive, Mt Wellington,
>Private Bag 14921, Panmure,
>Auckland, New Zealand.
>Phone: +64-9-573 7100
>Fax: +64-9-572 7101
>-------------------------------------------------------------
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