These coatings were washed off On wave soldering, but clearly this will not
happen on reflow. But that is not necessarily a bad thing. Rosin is a
reasonably good insulator and protective coating. Certainly in the past a
customer making professional personal comms gear used a rosin coat like
these routinely for its "ruggedized" range. They had switched to water
washing OA flux from rosin fluxes, but found their more complex HF radios
drifted off tune with the weather, a light rosin spray was a very adequate
fix..... They did not see the irony.
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Bob METCALF
Sent: Monday, January 25, 2010 6:21 PM
To: [log in to unmask]
Subject: Re: [TN] Someone knows SEAL BRITE COATING?
I would be surprised if this product is still available, especially in
it's original form. As others previously stated, it was rosin in solvent.
The problem with the original product is it required either solvent or
semi-aqueous cleaning after soldering. In today's world of no clean
fluxes, this product would not work. Perhaps they have formulated a no
clean version.
Regards,
Bob Metcalf
Atotech Western Regional Manager
Cell 714-334-7667
E-Mail [log in to unmask]
This e-mail and any attachments hereto are business documents of Atotech
USA Inc. and may contain CONFIDENTIAL OR PROPRIETARY BUSINESS INFORMATION.
Unauthorized disclosure and/or use of information contained in this email
is prohibited. If you are not the intended recipient, you may not read,
use, disseminate or copy this message or any other files transmitted with
it.
Mike Fenner <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
01/25/2010 08:17 AM
Please respond to
[log in to unmask]
To
[log in to unmask]
cc
Subject
Re: [TN] Someone knows SEAL BRITE COATING?
A blast from the past.
Sealbrite was a Lonco product, a solution of rosin in solvent that was
effectively a simple varnish. Air or oven dried. Worked OK.
Alpha Metals had equivalent products Alpha [2301 2302 etc] which aped it
reasonably well. What happened when everything, including Enthone and
their
products, became Cookson I don't know. Most likely these simple materials
were let go in favour of Enthone's modern OSPs.
Regards
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Charming Chan
Sent: Monday, January 25, 2010 3:27 PM
To: [log in to unmask]
Subject: [TN] Someone knows SEAL BRITE COATING?
Hello All,
Does anyone help input something about surface finish SEAL BRITE COATING?
I
got a talk with pcb fab shop today and I was told that there was SEAL
BRITE
COATING available for pcb surface treatment. I know nothing about such
surface finish and I'm quite curious. Thank you.
Best Regards
Charming Chan
---------------------------------------------------
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
-----------------------------------------------------
***This email, its content, and any files transmitted with it, are
intended solely for the addressee(s) and may be legally privileged and/or
confidential. If you are not the intended recipient, please contact the
sender by return and delete the material from any computer. Any review,
retransmission, dissemination, or other use of, or taking of any action in
reliance upon this information by persons or entities other than the
intended recipient is prohibited.
Messages sent via this medium may be subjected to delays, non-delivery,
and unauthorized alteration. This email has been prepared using
information believed by the author to be reliable and accurate, but Indium
Corporation makes no warranty as to accuracy or completeness. Indium
Corporation does not accept responsibility for changes made to this email
after is was sent. Any opinions or recommendations expressed herein are
solely those of the author. They may be subject to change without
notice.***
---------------------------------------------------
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
-----------------------------------------------------
|
