TECHNET Archives

September 2000

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:
Charlie Pitarys <[log in to unmask]>
Reply To:
Date:
Thu, 21 Sep 2000 08:38:33 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (96 lines)
Not true.
Studies have been done by Enthone with some aqueous chemistries on mis-print
solderpaste applications.
The removal of the OSP is minimized therfor reducing the chance of
solderability problems which could arise by completly removing the coating.
Not an easy feat considering the osp is designed to be "sacrificial" in this
appliction.
Contact me off-line for further info.

Charles M. Pitarys
Kyzen Corporation
Director of Application Technologies
[log in to unmask]

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Ryan Grant
Sent: Tuesday, September 19, 2000 10:20 AM
To: [log in to unmask]
Subject: Re: [TN] Missprints


Gabi,
        I'm afraid that if you want to remove the flux in the solder paste,
you must use a solvent that also removes the OSP coating.  So joint the rest
of us in the frothing sea and use IPA.  Just make sure you reprint that
board as soon as it is clean.  (Works great!).  By the way, if you use
no-clean, you will need to use an ultrasonic cleaner to avoid solderballs.
It is impossible to completely clean solder paste out of vias without it.

Thanks

Ryan Grant
Advanced Technology Engineer
MCMS
(208) 898-1145
[log in to unmask]


> -----Original Message-----
> From: Bogdan Gabi [SMTP:[log in to unmask]]
> Sent: Tuesday, September 19, 2000 5:00 AM
> To:   [log in to unmask]
> Subject:      [TN] Missprints
>
> Dear TechNetters,
> Which solvents and methods are the best for missprint cleaning on OSP
> coated
> boards?
> Thank you,
> Gaby
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information.
> If you need assistance - 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 1.8d
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - 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 1.8d
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################

ATOM RSS1 RSS2