Electronics Forum | Wed Apr 24 21:35:34 EDT 2002 | davef
Ooooo, much better. Tough to say, because of all the variables [ie, different materials, moisture level, temperature, etc]. Plastic encapsulated devices, especially IC, absorb water from the air, which is violently released during soldering. Typica
Electronics Forum | Wed Sep 13 09:15:19 EDT 2006 | Rob
Hi Peter, Out of the 1.5 billion components we shipped last year, we had 3 components back for solderability issues. All 3 had been taken out of their vacuum packaging and left to oxidize for a number of weeks. We don't see it as an issue, but we
Electronics Forum | Tue Mar 18 17:13:47 EST 2003 | Carol Stirling
Hi -to all those familiar with MSL, I have a few questions on Moisture Sensitivity Levels (MSL) with ICs. We have been assured by our distributers they mark any package of ICs shipped according to J-STD-033. We receive ICs marked as Class 3 and up,
Electronics Forum | Tue Apr 13 14:49:15 EDT 2010 | davef
90%) from the sample, and the bake time and temperature specified herein are minimums. To improve test accuracy, or to prevent heat damage, other bake parameters may be AABUS. 2 Applicable Documents IPC-QL-653 Certification of Facilities that Inspect
Electronics Forum | Wed Jan 12 10:05:20 EST 2005 | Dreamsniper
we are using polyimide boards 6 inches x 7 inches, 2.5mm thick, 12 to 14 layers, for aerospace industries. I am using a long bake of 12 hours at 70'C prior to manufacturing or exposure to elevated reflow and wave soldering temperature. If schedule i
Electronics Forum | Tue Nov 01 15:26:43 EST 2005 | GS
Is it this your first experience of C-CGA RWK ? In order to approach a RWK of this kind of pakage it requires a capable process and clear operating procedure. In the past, the company who I use to work for, we rwkd plenty of this kind of CCGA. Earl
Electronics Forum | Tue Apr 19 17:34:34 EDT 2022 | dwl
Be careful of MSL level 4 or higher devices on the first side. if they sit out 3 days, they will need to be baked before second side reflow or you risk component damage.
Electronics Forum | Wed Jan 17 11:30:23 EST 2007 | Colleen Miller
We have some larger MSL3 parts that require baking. they are 6mm thick which takes them off the chart provided at http://www.jedec.org/download/search/jstd033a.pdf Does anyone have a reference that would tell me the baking times for these component
Electronics Forum | Wed Dec 19 14:02:18 EST 2007 | gersla
We decided to bake components in tray package at 70 Degree prior soldering. I am looking for suggestion regarding baking time for MSL3 components: Up to 1.4mm package thickness 1.4-2 mm thickness 2-4.5 mm thickness In JEDEC-033B this temperature is n
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
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