TECHNET Archives

January 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:
Ye Andrew <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 27 Jan 2000 14:38:23 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (37 lines)
> Hi techneter
>
> Currently I am looking for low temperature solder paste for IR ( 150 -170
> deg C ) to use on a Flex circuit with new material.  Distortion is found
> on the material when peak temperature reachs 207 deg C from a preliminary
> study.
>
> As reply from two major solder paste supplier in North America, the most
> common alloy is Sn43Pb43Bi14 with 163deg C melting point. Can anyone
> advise how common is this alloy used in Electronic Assembly, ot there is
> other alloys, how long has been in the market.
>
> And I heard that this Bi alloy is every expense, it is almost 20x as the
> normally.
>
> Also, some report say the soldering quality is worst and quality is
> difficult to control.
>
> I need advise from every angles from your experience.
>
> Best regards,
> Andrew 27/1

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
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 Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################

ATOM RSS1 RSS2