Electronics Forum | Wed Sep 23 07:51:28 EDT 2015 | kkay
We have been experiencing an issue where our Panasonic film caps on a board are losing their rated capacitance. We are well within their recommended reflow specs and no other operation exposes the part to a temp of more than 160°C. The caps will read
Electronics Forum | Tue Feb 07 17:47:30 EST 2006 | grantp
Hi, I would say the most worrying defect would be damaged parts due to exceeding their temp specifications. Regards, Grant
Electronics Forum | Fri Feb 10 15:19:28 EST 2006 | Chunks
Wow, how people get off track. You'll probably see OK joints, but the flux will be burt. Your boards will prob. discolor and possibly delaminate. Some of your parts amy discolor too. Depending on your paste, you will probably see some balling/bea
Electronics Forum | Mon Jul 12 09:13:08 EDT 1999 | Mark Charlton
I need some advice concerning reflow of a BGA-292. Since I am not ready to change my entire process to no-clean, I decided to place the lone BGA-292 on a proto run using our BGA re-work station. The pcb is a moderately dense, single-sided, 8-layer
Electronics Forum | Thu Sep 13 13:34:49 EDT 2001 | Dave G
Too much Convection Airflow in the Reflow Oven blowing parts around ? Moisture Contaminated Parts out gassing ? Board out gassing? Just some thoughts, DG
Electronics Forum | Thu Sep 13 11:21:45 EDT 2001 | aldo_maldonado
We've had several instances of parts (1206R, SOT-23) popping off of their location during reflow. Parts placement is OK, paste brick is aligned and compact before oven. But we get random parts off their location just lying somewhere else on the boar
Electronics Forum | Wed Jun 19 17:44:38 EDT 2019 | slthomas
Does the part have a ground/thermal pad underneath or are all terminations on the perimeter?
Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris
Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven
Electronics Forum | Mon Jun 24 10:19:23 EDT 2019 | slthomas
I have not added images in quite some time but the "Attachments" feature below the window where you type your post will steer you through it. You just have to have the image hosted someplace that you can point to. Just for
Electronics Forum | Wed Jun 26 04:00:30 EDT 2019 | SMTA-David
Thanks, I'll take a look. Something else I found was the Z height for the module was set to 1.7mm but I am picking up the part on the PCB surface which is only 1.0mm from PCB being loaded, therefore the part must have been let got 0.7mm above PCB an
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