Electronics Forum | Wed Jun 13 21:27:41 EDT 2001 | davef
It depends on if [1] your solder connection is properly wetted or not and [2] the connection was sheared properly or not. For a properly wetted connection and properly run shear process, it looks like someone cut the connection with a knife. Consid
Electronics Forum | Fri Mar 30 18:24:12 EST 2001 | davef
There is no test. Beyond the issues that you mentioned that affect shear, an article published in a recent [1/01] "Journal Of Surface Mount Technology" documents that shear is also dependent on the rate of shear. You may be able to contact the auth
Electronics Forum | Thu May 06 11:37:48 EDT 2010 | davef
There is no specification. Shear tests are very material / operator dependent. BALL SHEAR TESTING OF RAW BGA DEVICES: A total of 3 devices were subjected to ball shear testing. Results of the testing indicated shear values in the range of 0.7-1.25
Electronics Forum | Wed Jul 03 15:40:17 EDT 2013 | davef
Shear tests are [in my opinion] senseless. The shear stress you measure depends more on the shear rate and on the point where the force is applied than on the grain structure. When shearing a component, you not only apply shear stress, but also roll
Electronics Forum | Mon May 10 15:02:37 EDT 2004 | davef
There's no such specification. Not should there be. Shear tests [in our opinion] are senseless, because: * Solder joint strength in pull/shear varies with lead geometry, solder volume, lead metal/metallization, and the way the test is done. * She
Electronics Forum | Thu Feb 15 19:41:38 EST 2001 | davef
What do you mean by "But after performing temperature cycle test, the former aging rate (from the shear strength ) seems faster than the latter."? Comments are: I can't recall having heard the term "precipitation hardness" [not that that means anyt
Electronics Forum | Tue Jun 01 12:57:52 EDT 1999 | John Sims
I need to perform shear tests on components that have been glued prior to wave soldering. Can any one recommend a shear tester and some standardized info on testing? We have had problems with poor glue bonds and would like to implement a test metho
Electronics Forum | Fri Aug 08 11:44:44 EDT 2003 | Henry
I am fairly new to wave soldering and production processes, but I have been tasked with coming up with a calculation involving the shear strength of some through-hole leads. The leads are tinned copper and I suspect that tinning reduces the shear st
Electronics Forum | Fri Nov 13 14:09:02 EST 1998 | Dave F
| Anyone using SMT "Fair-Rite" beads? We have a P/N 2743019447 that we're using. We need to know the shear force strength of the part and the vendor's man who knows is in Deutschland and can't help until Monday. I can't wait that long. | | Also, do
Electronics Forum | Wed Nov 18 05:21:18 EST 1998 | jack coia
Please could anyone give me any relative information concerning shear tests on the leads of SMD ICs. thanks in advance.
