Electronics Forum | Wed Jul 27 17:01:14 EDT 2005 | Dreamsniper
Issue: At 60'C test PCB Fails. Operator did simulation. Use of Heat Gun to heat up the BGA to 60'C while PCB is powered and running. At 60'C BGA fails. When pressed system is back which means that something becomes open. Sent BGA for SEM and found t
Electronics Forum | Tue Sep 13 06:00:29 EDT 2005 | Charlie
Was it possible to calculate Soak Test Equivalent on PCBA? For example: Soak Test at 60C/80%RH equivalent to how many hour of test at 25C/60%RH ?
Electronics Forum | Thu Oct 31 13:46:40 EDT 2019 | johnce
Hello, I have searched the forums for this specific topic, but can not find the clarification I would like. I am setting up a baking system to "reset" SMD components using a vacuum-bake oven. According to the JEDEC-STD-033 standard, depending on th
Electronics Forum | Tue Jul 25 16:08:52 EDT 2017 | dontfeedphils
I'm currently working on bringing a manual coating process/workcenter online and my QA team is giving me some grief. For background, we're using Humiseal 1B31 thinned with thinner 521, mixed at 1:1 by volume. Spraying through a Binks HVLP with 10 P
Electronics Forum | Thu Aug 09 19:13:37 EDT 2007 | htran
DaveF, Our customer requirement is to comply with IPC-STD-001 but the J std doesn't specify the bake out temperature for populated boards and the moisture absortion rate. Right now we are baking the populated PWAs after aqueous wash at 80C at 18-48
Electronics Forum | Mon Oct 11 12:02:32 EDT 2010 | smt_guy
Hi, we have been baking parts like QFP's and BGA once they past MSL requirements. But now I have some SOIC's with MSL 3 Rating that needs to be baked. I wonder if I can bake them together with the PVC Antistatic Tubes. Can these tubes withstand the
Electronics Forum | Wed Dec 19 20:42:55 EST 2007 | davef
gersla: You're correct that carriers of low temperature material will disfigure and become useless at 125*C bake temperatures. The reason you can not find 70*C bake data is: J-STD033B, "4.2.2 Low Temperature Carriers. SMD packages shipped in low tem
Electronics Forum | Mon Mar 05 17:19:38 EST 2007 | bman
I've wondered about the 5% spec myself. Section 4.2 points out that "The oven used for baking shall be vented and capable of maintaining the required temperature at less then 5% RH.", leading me to believe this spec even applies to ovens used to bak
Electronics Forum | Mon Mar 05 10:30:28 EST 2007 | Rob
We've got away with 90C before, however at 120C they tend to bananna and it isn't easy to remove all of the product then, and some of the legs get damaged (we always received waffle packs then one day tubes arrived & the operator baked as usual....).
Electronics Forum | Tue Mar 06 10:35:37 EST 2007 | muse95
Table 4-1 only specs the humidity requirement for bake temperatures below 100C. It is conspicuously absent above that. I believe it is because moisture is in its gaseous state above 100C.
