Electronics Forum | Fri Apr 24 15:21:08 EDT 1998 | Earl Moon
| Looking for anyone who has experience with high temperature soldering. Need to determine why solder joints are failing. Thermocycling of unit is -40C to +140C, 30 minute dwell time, 10 sec. transition time | Your help is appreciated | Ed Holton |
Electronics Forum | Thu Apr 05 12:27:12 EDT 2001 | davef
I concur with your second approach. A profile needs to be tailored to the design of the board, the components, and the solder paste. Your first approach seems to try to balance lower quality soldering with a lower process complexity.
Electronics Forum | Thu Jun 08 17:21:31 EDT 2006 | PWH
EC - I hope you don't mind that I add to your question... We are running lead free assemblies now and parts that normally hang on upside down are falling off. Any advice on this from others new to lead free?
Electronics Forum | Fri Jun 09 04:21:20 EDT 2006 | rlackey
Hi EC, there was an in depth post dealing with this back in 2000 from the now legendary Bob Willis: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=1468&#Message6342 Cheers, Rob.
Electronics Forum | Thu Aug 11 20:12:12 EDT 2016 | davef
Different points on the board couple have different thermal masses. Look here: http://www.ecd.com/portals/5/products/vmole/V-MOLE-Verify-3-Thermocouple.pdf
Electronics Forum | Thu Aug 11 22:38:22 EDT 2016 | anhsang38
Dear Davef Thanks for your information. I already have measured it at the same position for 2 kind of component but the result does not change. Pls help me...
Electronics Forum | Mon Nov 27 17:44:10 EST 2000 | Dave F
Gawd. Sure FR-4 will meet those conditions. Tg [check the fine SMTnet Archives for discussion on Tg] of FR-4 is 130�F or so. Consider: * Is the delT between Tg and the upper operating [or storage] temperature acceptable for your application? * D
Electronics Forum | Thu Apr 05 08:36:35 EDT 2001 | jmlasserre
use a solder join temperature of 200/210� whatever the pcb used (tin lead coated or osp or gold fash). 2nd ==> to adapt the temerature to the pcb used: - Reflow (200-210�) for tin lead coated pcb's (in this case we have just to reflow the solder
Electronics Forum | Wed Sep 15 07:43:12 EDT 1999 | Earl Moon
| Hi, | | Can someone pls suggest to me the best reflow temperature setting | for a force air convection oven. The details is as follow. | 1) Heller 1700s | 2) 12 zone---6 top and 6 bot | 3) Solder paste --- Qualitek 691 non clean | 4) board size :
Electronics Forum | Tue Feb 14 01:00:47 EST 2017 | soldertraining
Soldering Bath - When we need to tin high-power contacts or a lot of wires, for example, in making harnesses, a regular soldering iron is either impossible to use due to the high thermal capacitance requirement, or takes way too long to perform the t
