Electronics Forum | Fri Mar 30 20:06:55 EST 2001 | aortiz
Maybe there's no test and I don't know where or why my customer came with that requirement (I think because in one of the board shipments he got a board were a smd resistor broke, but I think that happened because miss handling), but anyway I need so
Electronics Forum | Fri Mar 30 13:06:50 EST 2001 | aortiz
Hi, I need support on the method or applicable standard to measure the shear force strength on chip capacitors and resistors. I know the soldered joints strength is related to land desing, solder volume, pcb and component solderability, component
Electronics Forum | Wed Jun 13 03:37:06 EDT 2001 | ianchan
Hi mates, I did a recent shear test (destructive test), on a uBGA liken product, and noted the post-shear solder joint, had clean "smooth" visual appearance under the uBGA pad, however the matching pcb pad was clearly lifted clean. Question: 1) how
Electronics Forum | Fri Aug 08 12:46:02 EDT 2003 | davef
When I was a salty old fart in the Navy, we sent the babes from the turnip patch off on snipe hunts. 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
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 | 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 | 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
