Electronics Forum | Tue Jul 25 12:46:14 EDT 2017 | emeto
This is easy experiment. Just run no populated PCB and that a populated one using the same spot for your thermo-couples. If you have a convection oven, you might be surprised how small this difference could be if not none. In some cases, I would expe
Electronics Forum | Thu Apr 19 18:38:05 EDT 2018 | slthomas
I would say not likely unless it's at least serialized, but certainly so if it requires calibration....point being LOTS of stuff requires calibration for AS9100 activity. Simple hand tools probably not, for example, but your calipers, multimeters w
Electronics Forum | Tue Aug 13 02:33:04 EDT 2019 | ameenullakhan
Hi , Thanks for the reply. Yes CCGA was checked before placement and sending to reflow oven. The latest suspect form few cross functional team member is like. It is due to improper reflow profile " Column kick out " has happen. I am
Electronics Forum | Mon Jun 22 19:17:07 EDT 2020 | bmalhi
There are many things that can cause this and several solutions. Suggest having Heller Service Tech come in put some thermocouples at various points and determine the best course of action. If in-person visits are not possible at this time, we can wa
Electronics Forum | Wed Oct 06 17:29:50 EDT 2021 | emeto
The question is can you consistently heat up the board to the desired temperature? You need to measure temperature with thermocouples and plot temp/time diagram. Based on the datasheet chemistry you use, you can see what is the recommendation and if
Electronics Forum | Wed Oct 06 20:23:38 EDT 2021 | stephendo
If you can, it would be best to have a scrap board with a scrap BGA and drill a small hole in the bottom of the PCB and attach the thermocouple lead to a ball. This is assuming that you have a convection oven. If you have an IR oven, and that is wh
Electronics Forum | Tue Feb 02 09:47:45 EST 1999 | Justin Medernach
| Hi everybody. | Somebody know any consideration or special care to make a profile for BGA's. | | any advice is aprecied. | | thanks | Al Carrillo | | Hi Al, A BGA should be looked at just like any other surface mount device. However, just
Electronics Forum | Tue Feb 02 13:55:52 EST 1999 | Brian Stumm
| Hi everybody. | Somebody know any consideration or special care to make a profile for BGA's. | | any advice is aprecied. | | thanks | Al Carrillo | | | Al, From my experience BGA's are no more difficult to profile than any other component.
Electronics Forum | Tue Feb 02 17:51:45 EST 1999 | gcollier
| | Hi everybody. | | Somebody know any consideration or special care to make a profile for BGA's. | | | | any advice is aprecied. | | | | thanks | | Al Carrillo | | | | | Hi Al, | A BGA should be looked at just like any other surface mount d
Electronics Forum | Thu Dec 17 10:04:28 EST 1998 | Chrys
Necessity is the mother of invention... The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. So I ran out to the local Radio Shack to see if the