Jim, Werner,
Actually, there is a standard for ball shear test, JEDEC JESD22-B117, "BGA Ball Shear". It can be downloaded free of charge from JEDECs webpage. They must have listen to you Werner when they wrote it because it defines acceptable failure modes but not acceptable shear force.
Per-Erik Tegehall
IVF, Sweden
-----Ursprungligt meddelande-----
Från: Werner Engelmaier [mailto:[log in to unmask]]
Skickat: den 20 oktober 2003 17:20
Till: [log in to unmask]
Ämne: Re: [TN] Mechanical Reliability Test Methods
Hi Jim,
>Are there any sort of industry standards which define the following tests:
> a. three point bend test
No
> b. four point bend test
Not yet, 6-10d is working on it together with JEDEC. There likely will be
separate TMs for "Monotonic Bending" [purpose is to find 'brittle' interfacial
solder joint failures resulting from low interfacial/metallization strength] and
"Dynamic Bending" [similar to the IEEE CLTF test for the purpose to fatigue
SJs similar to T-cycling--it works to some degree]
> c. ball shear test
No, there should not be one, because the strength values are meaningless,
only the failure mode is telling.
> d. board level torsion test
No, see (c)
Regards,
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Fax: 386-437-8737, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com
---------------------------------------------------
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 847-509-9700 ext.5315
-----------------------------------------------------
---------------------------------------------------
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 847-509-9700 ext.5315
-----------------------------------------------------
|