Thanks for the quick replies. From what you are saying it looks like I
will need to do some testing on a particular pen and ink to see if it is
suitable for PCB's. If I buy just a general UV marker pen it could be
chock full of halide ionics for example. Unfortunately I can't use a
washable flux, or ink as the assemblies can't be cleaned. The PCB is
part of a larger ceramic and stamped metal component, which has several
cavities that would be nearly impossible to get water, or solvent out
of.
Regards, Jenny
-----Original Message-----
From: Kevin Glidden [mailto:[log in to unmask]]
Sent: 01 November 2006 21:04
Subject: Re: UV flourescent pens for rework identification.
http://www.blacklightworld.com/non%20porous%20pen.htm\
???
Don't think this is made expressly for PCBs....not sure if it is
conductive or not...
Kevin Glidden
Manufacturing Engineer
Astronics Luminescent Systems Inc.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: Wednesday, November 01, 2006 3:22 PM
To: [log in to unmask]
Subject: Re: [TN] UV flourescent pens for rework identification.
Hi Jen:
Use FluxMarker, P/N FM5WSO, a water soluble marker that
comes in different colors. It works well and comes off easily. I am sure
that you can find vendors through Google.
Good Luck
Ramon
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jenny Drake
Sent: Wednesday, November 01, 2006 8:37 AM
To: [log in to unmask]
Subject: [TN] UV flourescent pens for rework identification.
Has anyone any experience using pens with ink that is invisible under
normal light, but shows up under UV for identifying areas of PCB's
needing rework?
This would remove the need to place and remove stickers on the
components and PCB and be invisible to the end customer.
Various pens are on the market for to let you mark your property, but
there is no information that I've been able to find for their use on
PCB's.
Ideally I would want one that has been shown to be safe for use on
electronics and have low ionic contamination.
Regards, Jen
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