I am probably not alone in feeling twitchy about this, if the solvent you
are using does not run off the board then really you haven't removed
anything, but dispersed it so you or your customer can't see it.
I suppose you could say it has been absorbed by the pen, but If it has been
absorbed by the pen it is just put back down in increasing concentrations
each time you use the pen....
Or you could argue that as the assembly works the residues must be
dispersed enough so that the amount per area is below some critical point
and therefore no longer a hazard.
I suppose if the customer specifies it and/or is happy with product
reliability then it is OK, but I still feel twitchy.
Regards
Mike Fenner
Applications Engineer, European Operations
Indium Corporation
T: + 44 1908 580 400
M: + 44 7810 526 317
F: + 44 1908 580 411
E: [log in to unmask]
W: www.indium.com
Pb-free: www.Pb-Free.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Howard Watson
Sent: Wednesday, July 09, 2003 9:34 PM
To: [log in to unmask]
Subject: Re: [TN] No clean flux remover pen
Jim,
Sorry for not explaining. The Pad Prep Pen is used for rework, particularly
with our hot air rework station. When removing the component, flux is
applied to the leads. After component removal, the flux residues are then
cleaned off the pads, to prepare the pads for soldering the new component to
the board.
Howard Watson
SMT Manufacturing Engineer
AMETEK/Dixson
Jim Smith <[log in to unmask]>
07/09/03 02:20 PM
To: "TechNet E-Mail Forum." <[log in to unmask]>,
Howard Watson <[log in to unmask]>
cc:
Subject: Re: [TN] No clean flux remover pen
Howard:
I can't help asking: why do you remove no clean flux residues?
Jim Smith
Managing Director
Electronics Manufacturing Sciences, Inc.
4285 45th St. S.
St. Petersburg, FL 33711-4431
Tel: (727)866-6502 ext. 21
Fax: (727)867-7890
eMail: [log in to unmask]
Howard Watson wrote:
Jim,
Interesting that you ask, as I was just in the process of ordering some more
of the pens that we use, which is called a "Pad Prep Pen", made by A.P.E. ,
P/N is 8200-1350, 8 for $89. I don't have experience with any others, so I
won't place judgement. However, our operators love this one for removing
our no-clean flux residue.
Howard Watson
SMT Manufacturing Engineer
AMETEK/Dixson
"West, Jim" <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
07/09/03 01:41 PM
Please respond to "TechNet E-Mail Forum."; Please respond to "West,
Jim"
To: [log in to unmask]
cc:
Subject: [TN] No clean flux remover pen
Good afternoon,
I was informed by my purchasing department that Multicore (part # MC-PV-01)
is no longer making their Mini-cleaner (prozone pen), that we were using to
remove flux residue from hand soldered applications. We have received a
sample from a different supplier that is supposed to do the same thing, the
only problem is the pen leaks severely when you push on the tip. This may
be a bad sample, but we are not off to a good start trying to find a
replacement. Does anyone else out there use these types of pens to remove
flux residue from hand soldering or similar applications? If so, what
manufacturer do you use and how do the pens perform? You can email me
off-line if you like.
Thanks,
Jim West
---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
-----------------------------------------------------
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
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 delete and 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 subject 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. In particular, Indium Corporation does not accept responsibility for changes made to this email after it 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 free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------