Electronics Forum | Fri Oct 01 09:47:36 EDT 2010 | noid
Yes, they should be baked prior. We pre-bake all polyimide fabs, flex or not. They are prone to delam.
Electronics Forum | Fri May 31 10:35:46 EDT 2002 | dason_c
I think that the IPC spec only apply to the MSD. I had a paper from Lucent and forwarded by Francois Monette, please aware that the first 2 hours, the moisture doesn't bake out from the assembly/component and result show that it is increase the weigh
Electronics Forum | Tue Apr 01 19:36:02 EST 2003 | iman
from my humble experience : 1) check if there is nickle contaminate in the gold bath? shd have report data from the PCB fab house. 2) check if your production did 48hr bake at 125degC, IF the BGA did not come in its "original" MSD cozy packaging.
Electronics Forum | Tue Jul 06 05:33:46 EDT 2004 | ANDREW
1)What is the MSD level for PCB? 2)I have some PCB's with HIC (humidity indicator card ) has turn to pink at 50%. Should I bake the PCB prior to assembly process.This fab is a complex board with various kind advance package assembled on the board.
Electronics Forum | Tue Jul 06 07:49:08 EDT 2004 | davef
Q1)What is the MSD level for PCB? A1) There is none Q2)I have some PCB's with HIC (humidity indicator card ) has turn to pink at 50%. Should I bake the PCB prior to assembly process.This fab is a complex board with various kind advance package assem
Electronics Forum | Tue Sep 07 17:12:34 EDT 2004 | davef
No one knows what type of board you use. So, assuming you're talking a fairly standard FR4. Q1a. actually, what is max temperature and duration can a bare PCB reflow without any quality problem? A1a. We'd guess your board could take 250*C for may
Electronics Forum | Tue Aug 25 21:01:45 EDT 1998 | Peter
We use an Intermec 3240 Thermal transfer printer and print on polyimid label material that survives the reflow and wave solder (top side only) process without turning black. Labels run around 3-4 cents per depending on the size (We found Imtec label
Electronics Forum | Fri Aug 28 18:57:49 EDT 1998 | Mike Cleary
Selecting the correct label solution for SMT labeling is a science. Our company is a supplier of electronic identification products. Please let me know if you have questions regarding materials, printers, etc. I have been in this industry for over
Electronics Forum | Fri Jun 26 11:27:12 EDT 1998 | Earl Moon
| | Alright gentlemen and ladies of the forum, I again seek knowlage on what is probably a well known fact. I have spent a good part of the morning with various IPC standards and weighty tomes such as the Electronic Packaging and Interconnection Han
Electronics Forum | Fri Jun 26 15:37:50 EDT 1998 | Justin Medernach
| | | Alright gentlemen and ladies of the forum, I again seek knowlage on what is probably a well known fact. I have spent a good part of the morning with various IPC standards and weighty tomes such as the Electronic Packaging and Interconnection H
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