TECHNET Archives

July 2008

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Phil Nutting <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Phil Nutting <[log in to unmask]>
Date:
Thu, 17 Jul 2008 14:51:26 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (167 lines)
Checking the Dykem website shows several types of pens that come with white "ink".

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Kevin Glidden
Sent: Thursday, July 17, 2008 2:33 PM
To: [log in to unmask]
Subject: Re: [TN] Indelible marking

Doesn't the ink need to be non conductive for PCB applications?


Kevin Glidden
Manufacturing Engineer
Luminescent Systems Inc.


-----Original Message-----
From: Temkin, Gregg [mailto:[log in to unmask]]
Sent: Thursday, July 17, 2008 1:53 PM
To: [log in to unmask]
Subject: Re: [TN] Indelible marking

Ioan

The same company that Richard mentioned, ITW Dykem, makes black, fine point
epoxy marking pens.  Epoxy is one of the best materials you'll find for
adhesion, solvent and heat resistance.  They are available from
McMaster-Carr, www.mcmaster.com as their cat no 15605T82 for $4.47 ea.  I
found that this marker resisted even really strong solvents, such as ethyl
acetate, if heat cured for about 30 seconds with the simple application of a
heat gun.

Gregg

-----Original Message-----
From: Ioan Tempea [mailto:[log in to unmask]]
Sent: Thursday, July 17, 2008 8:40 AM
To: [log in to unmask]
Subject: Re: [TN] Indelible marking

Richard,

The brand of the orange ink is missing.

Thanks,

Ioan

-----Message d'origine-----
De : Stadem, Richard D. [mailto:[log in to unmask]]
Envoyé : July 17, 2008 11:27 AM
À : TechNet E-Mail Forum; Ioan Tempea
Objet : RE: [TN] Indelible marking

I use these to paint a dot on a BGA if it is reworked. Two dots signify
two reworks, etc.
No matter what system is in place to track multiple reworks, there is
noting like a bright orange paint dot to heighten the rework operator's
awareness that the component has already been reworked once (or twice,
or 3X,.....)
The paint pens can be used to mark sernos on all kinds of components,
boards, etc. It takes about a 10 minute cure at 100 C, after that there
is nothing that can remove the ink.
You will need to ensure the customer is OK with this. It is not a
low-outgassing ink, but those are available from some companies as well,
for space use.
I believe the companies that make the white PWB silkscreen ink also make
pens for touching up that same ink. That is a low-outgassing ink, but
requires a longer cure time. However, it is the same ink as is used on
the PWB, so it is already qualified from a materials compatibility
standpoint.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Thursday, July 17, 2008 9:35 AM
To: [log in to unmask]
Subject: [TN] Indelible marking

Dear Technos,



I need to serialize about 200 BGAs (simply write on them sequential
numbers 1-200). The BGAs will be assembled, SnPb process with water
soluble flux, then washed in plain water in our in-line washer.



In case the customer will not accept us scratching the numbers onto the
top of the components, what kind of permanent ink can I use?



And would you see any issue with scratching the top of the components?



Thanks,



Ioan


---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0 To
unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET
Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the
posts: send e-mail to [log in to unmask]: SET Technet Digest Search the
archives of previous posts at: http://listserv.ipc.org/archives Please
visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for
additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

Note: All the information contained in this e-mail and its attachments is proprietary to Kaiser Systems, Inc. and it may not be reproduced without the prior written permission of sender.  If you have received this email in error, please immediately return it to sender and delete the copy you received.

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

ATOM RSS1 RSS2