Azman,
How is fine pitch ?
How about your stencil design ?
Notrogen setting at your comp. ?
What is your printer ? Solder paste maker ? Viscosity in present ?....
I maybe help you if you provide us items mentioned above in detail.
Best regards.

----- Original Message -----
From: "azman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, June 25, 2005 12:25 PM
Subject: [TN] Lead free solder paste


> Hi all,
>
> Recently I had a problem with printing the lead free solder paste, almost
> every board has bridging especially on the fine pitch locations. Anyway
> this problem never happens when we use leaded solder paste. So I would
like
> to ask if there are any special controls such as environment, viscosity,
> stencil design and printer parameters in order to achieve good printing
for
> lead free solder paste.
>
>
> Best regards
> Azman
> Process Eng.
>
> ---------------------------------------------------
> Technet Mail List provided as a 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/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 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------