Another solution could be using Brady labels. Those labels
withstand temperature and after CC they stay on boards really well. We use
Brady printers  for serial numbers and other uses but not for bar-coding
yet. It is in our plan.   Is anybody out there using bar-code labels that
might want to share their experiences?
        Regards,
        Ramon


> -----Original Message-----
> From: Zweigart, Siegmund [mailto:[log in to unmask]]
> Sent: Friday, May 09, 2003 6:59 AM
> To: [log in to unmask]
> Subject: [TN] laser marking systems
>
>
> Hello all
>
> For a new customer we are looking into laser marking systems.
> It should be able to mark bar code and 2D data matrix codes in the solder
> mask.
> We had some discussions with customer and some potential suppliers.
> Some questions came up:
> -       What is better: Nd-YAG or CO2 laser (in the Nd-YAG process the
> solder mask is removed down to the bare copper,         with CO2 only the
> color is changed).
> -       Do you have any experience with readability of the barcode after
> the
> product was exposed to Air / humidity / soldering       processes?
>
>
> All input welcome
>
> Siggi
>
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