Hi Bill /et al/,
You can also use fuming nitric acid or laser engraving.
Laser engraving is probably fastest, safest and cheapest way.
Indrek
--
Indrek Rebane, CTO, Hedgehog OÜ
Riia 185A, 51014 Tartu, Estonia
[log in to unmask], www.hedgehog.ee
tel +372 5698 1845, skype teine_rebane
On 5.07.2012 21:29, Brooks, Bill wrote:
> Cool.. not a bad idea. :)
>
>
> Bill Brooks | Datron World Communications, Inc.
> PCB Designer/Engineer | Office: 760-602-7004| Fax: 760-597-3777 | [log in to unmask]
> 3055 Enterprise Court, Vista, CA 92081 | www.dtwc.com
>
> Performance You Require. Value You ExpectTM
>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Di Marcello Paul
> Sent: Sunday, July 01, 2012 11:45 PM
> To: [log in to unmask]
> Subject: Re: [DC] Removing identifying marking on chips after assembly?
>
> Can't help here, with a proper and complete solution, but we have to lacquer our products a lot of the time for intrinsic safety clearances.
> If a sufficient quantity of lacquer is sprayed over the chips it hides the marking, and scraping the lacquer off often results in the scraping off of the marking too.
>
> Paul Di Marcello
> Technical Design Engineer
> Pepperl+Fuchs srl
>
>
>
>
> -----Original Message-----
> From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Brooks, Bill
> Sent: venerdì 29 giugno 2012 18.05
> To: [log in to unmask]
> Subject: [DC] Removing identifying marking on chips after assembly?
>
> Sometimes there is a requirement to remove the marking on a chip after assembly or even before assembly.
> What sort of issues come from this activity?
> Is there a company that is expert at doing this that could contract to do this?
> If we did it in house, what equipment and expertise would we need?
> Where should I look to for advice?
>
>
> Bill Brooks | Datron World Communications, Inc.
> PCB Designer/Engineer | Office: 760-602-7004| Fax: 760-597-3777 | [log in to unmask]
> 3055 Enterprise Court, Vista, CA 92081 | www.dtwc.com Performance You Require. Value You ExpectTM
>
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