Sender: |
|
X-To: |
|
Date: |
Wed, 29 Aug 2007 11:33:17 +0300 |
Reply-To: |
|
Subject: |
|
From: |
|
Content-Transfer-Encoding: |
7bit |
In-Reply-To: |
|
Content-Type: |
text/plain; charset=ISO-8859-15; format=flowed |
MIME-Version: |
1.0 |
Parts/Attachments: |
|
|
A lot depends on the solder mask material. If it is dry film, for
example, then it is possible, with an emulsion of methylene chloride in
a 20% sodium hydroxide solution (remove and rinse as soon as the coating
crinkles). If it is based on an epoxy (and many are) it is clearly
impossible for a solvent to differentiate between a cured mask and the
substrate and you would cause much more harm than good.
Brian
Tim Mack wrote:
> All,
>
>
>
> I have run into an issue with a board that has solder mask covering some
> pads. Is there a product/solvent that can remove the solder mask easily
> with out etching the copper? I would rather chemically remove it than
> manually scrap it off with a razor blade.
>
>
>
> Thanks in advance,
>
>
>
> Tim Mack
>
> Research Engineer
>
> NDSU CNSE
>
> www.ndsu.edu/cnse
>
>
>
>
> ---------------------------------------------------
> 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
-----------------------------------------------------
|
|
|