Hi Phil,
I work at automotive branch and I have some information for you:
- You should not mix different alloys. You should prefer pure alloy phases.
We will use SAC305 in all process due to its lowest melting point. You will
get less problems with your customer, especially, if you are in automotive
branche.
- I made a selective wave soldering study with different alloys (SAC,
Sn100C, SnAg) and different fluxes. The soldering behavior (soldering
lengthwise and crosswise, solder bridges and wave solder cut) was similar
between SAC and Sn100C, SnAG was worst. SnAg had the best solder joint
(voids, micro cracks, fillet lifting, meniscus). SAC had less fillet
liftings, Sn100C a lot. For fillet lifting we will make further analysis
and studies due to process, alloy, PCB, Layout......
- We use in general ink jet fluxing. Be careful, there are a lot of well
working fluxes on the market, but there are many, which will produce
migration and corrosion, if the are´t activated correctly.
best regards
Roland
____________________________________________________
Die Zeit ist das Feuer in dem wir verbrennen!
____________________________________________________
|---------+--------------------------------------->
| | Phil Nutting |
| | <[log in to unmask]
| | > |
| | Gesendet von: TechNet |
| | <[log in to unmask]> |
| | |
| | 11.10.2005 22:15 |
| | Bitte antworten an TechNet |
| | E-Mail Forum; Bitte |
| | antworten an Phil Nutting |
| | |
| | |
|---------+--------------------------------------->
>---------------------------------------------------------------------------------------------------------------|
| |
| An: [log in to unmask] |
| Kopie: |
| Thema: Re: [TN] SAC 305 versus Sn100C |
>---------------------------------------------------------------------------------------------------------------|
That sounds logical... in a twisted sort of way.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Franklin Asbell
Sent: Tuesday, October 11, 2005 4:13 PM
To: [log in to unmask]
Subject: Re: [TN] SAC 305 versus Sn100C
(ridiculous answer for the day)
Buy 1200 lbs of each, on Wednesday DOE test SAC 305, dump and clean then
on
Thursday DOE test Sn100, dump and clean then on Friday DOE test SAC 305
again (cause you never can have enough data), dump and clean then on
Monday
DOE test Sn100 again.
By then you will either;
1. Have enough data to find a suitable mix for your facility
2. Be fired for wasteful spending including time wasted
3. Been berated by those persons who had to put up with you making them
dump
and replace the unit as well as recycling or waste disposal personnel.
4. Just have had enough and begin considering a nice relaxing
telemarketing
position
Oh, by the way, my suggestions are always free, no thanks necessary...
Franklin
---------------------------------------------------
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
-----------------------------------------------------
---------------------------------------------------
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
-----------------------------------------------------
|
