The correct name of the (vintage) machine is Sebastian stud tester. It's
probably followed by a number of more modern ones. From Dage, for instance.
Inge
----- Original Message -----
From: "Inge" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, April 09, 2009 6:01 PM
Subject: Re: [TN] Friday Theorizing
> Bob,
>
> why so thin Tin? And no barrier? What's the purpose? And what do you mean
> with a 'carrier' ?
> When testing conductor adhesion, we simple make a board sample with a
> number of copper traces, then cut it so we get a large number of square
> pieces approx. 1x1 inch. Next, we apply a solder paste dot on the center
> of each square, size about 2 mm. This is followed by soldering kind of
> needles with a round plate to each square sample. Vapour phase or oven
> soldered. Finally, the samples are placed in a Sebastian pulling machine's
> chuck and depress 'pull'. The machine increases the pull force until the
> plate headed needle separates from the FR4 matrix and the value is
> presented on the display. Years ago, we did this test frequently on board
> coupons, but there is little interest in doing it today, because adhesion
> problems are very rare.
>
> Inge
>
>
> ----- Original Message -----
> From: "bob wettermann" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, April 09, 2009 5:17 PM
> Subject: [TN] Friday Theorizing
>
>
>> Dear Technetters:
>>
>> Has anyone done any adhesion testing of a 2um tin-electrocoated surface
>> (copper carrier) to FR-4? How about a 0.100um tin electrocoated surface?
>> Can someone theorize on which might give better adhesion using a 2-part
>> epoxy?
>>
>> Regards
>>
>> Bob Wettermann
>> BEST
>> PH 847-767-5745
>>
>> ---------------------------------------------------
>> Technet Mail List provided as a service by IPC using LISTSERV 15.0
>> 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 15.0
> 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 15.0
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
-----------------------------------------------------
|