Electronics Forum | Sat Oct 19 08:28:04 EDT 2019 | davef
Hi Davandran ... Butt leads are not intended for high mechanical strength applications. That's why butt leads are not allowed in Class 3 products. If you want to be sure that your butt leaded component stays on the board, just glue it after solderin
Electronics Forum | Tue Jan 14 11:39:51 EST 2020 | avillaro2020
Thanks Robl. I’ve contacted samtec followed their advice but ended up empty handed. Originally my stencil thickness is 6 mils, samtec stressed the need for the paste and charge to have good contact but this is challenged by the inherent charge non-co
Electronics Forum | Tue Dec 13 10:27:46 EST 2005 | patrickbruneel
Samir, This growth doesn't look like a tin whisker which are needle like and very fragile (they don�t bend they break). I have seen similar growth in the past in an EMS defect analyses with connectors in stressed conditions. The growth seen was sim
Electronics Forum | Sun Apr 04 08:03:41 EDT 2004 | davef
There certainly is a problem, but it�s unclear from your description whether the source of the problem is: * Design * Soldering * Component quality * A combination Recognizing the SMT connectors see stress that other SMT component do not, you give t
Electronics Forum | Sun Apr 04 11:17:09 EDT 2004 | wsanita
I feel the solder connections were fine. The anchor pads for this device on the board are covered by solder mask. So the leads of the connector take all the stress. The component was broken off and under a scope you can see the plating of each lead
Electronics Forum | Wed May 02 22:14:21 EDT 2007 | DSD
The Philips Orion (Yamaha YV100) Head I/O Board is usually at fault as this tends to suffer trackwork problems with age due to the constant flexing of the board stressing the connectors on the board, thus breaking tracks within layers. You should not
Electronics Forum | Mon Jan 27 14:16:46 EST 2003 | russ
i have done this thousands of times. You are correct about no preheat, however it never seemed to be any issue for us. You do have to make sure that you do not expose any SMT comps. to the solder or they will become heat stressed/fractured. Connec
Electronics Forum | Mon Feb 23 05:37:23 EST 2009 | emmanueldavid
Necoleta, PWB Blistering/De-lamination may not be due for Titanium finished threads / holders which is typically being used to draw high Shelf Life of Pallets and even flow across Auto Wave Soldering rails. There is also nothing to suspect on Liquid
Electronics Forum | Thu Sep 02 16:52:31 EDT 1999 | Earl Moon
| | | Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? | | | | | | What I'm really after is anything describing how close a screw/washer/nut
Electronics Forum | Thu Sep 02 16:37:23 EDT 1999 | R Scheller
| | Has anyone done or seen any studies done documenting what may be the affect of hardware such as screws in the parimeter vicinity of BGAs on a circuit board? | | | | What I'm really after is anything describing how close a screw/washer/nut combin
