We receive serialized coupons and boards from our vendors (Ink- most likely
epoxy). We add our own serial number just prior to assembly (Bar-coded
thermal kapton). Everything is tracked.

Alain Savard
QA-PCB
CAE

-----Original Message-----
From: Graham Collins [mailto:[log in to unmask]]
Sent: Tuesday, October 02, 2001 1:43 PM
To: [log in to unmask]
Subject: Re: [TN] Serialization of PCB's


Hi Scott
We currently mark everything.  Two methods are used:
Epoxy ink marking - typically we use a stamp to apply the number, similar to
a date stamp.
or (preferred)
thermal printed on a kapton label.

Marking goes on first thing, before any parts.

PCB fab vendors mark lot codes, so I'd imagine they could serialize pcb's -
for a price.  Whether it would be cheaper than marking yourself - don't
know.



regards

Graham Collins
Process Engineer,
Northrop Grumman
Atlantic Facility of Litton Systems Canada
(902) 873-2000 ext 6215

>>> [log in to unmask] 10/02/01 01:45PM >>>
Is anyone currently serializing PCB's, pre or post assembly? What methods
are currently available? I am familiar with pad printing, ink-jet, laser,
labels, etc. Are PCB fab vendors usually set up to serialize PCB's?
TIA,

Scott Buscomb
PCB Design Engineer
Zight Corporation
www.zight.com

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