Electronics Forum | Fri Dec 03 12:12:33 EST 2004 | mruzicka
Dreamsniper, We would need much more details about your process to help you to determine the source of voids. Type of paste, how long you leave your paste on stencil, your relative humidity, reflow profile, type of oven, oven environment (N2?) and so
Electronics Forum | Mon Nov 20 21:02:46 EST 2000 | Michael Psrker
First question I have for you is: Are you assuming that standard precautions are in place at your facility to minimize moisture content i.e. air- deionizers, vacuum sealed packaging, humidity control in storage and manufacturing? You do not mention
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 Jan 16 18:00:50 EST 2001 | mikestringer
Hi everyone I am in the process of reviewing our storage of SMT components. At the moment they are pretty much on open shelves in the factory environment. We endevour to reseal components labled 'moisture sensitive' in their original packaging, bu
Electronics Forum | Mon Aug 31 19:15:36 EDT 2020 | dilogic
We have GSM2 with FlexJet heads (an older one). There are 7 sensor amplifiers (with LED indicators) for touchdown detection and one for z-safe detection which is of a different type (with numeric LED indicator). I can't find anywhere what the right n
Electronics Forum | Tue Jul 17 21:48:09 EDT 2007 | davef
Per ESD Handbook TR 20.20 paragraph 5.3.15 Humidity "Humidity is beneficial in all ESD Control Program Plans. Contact and separation of dry materials generates greater electrostatic charges than moist materials because moisture provides conductivity
Electronics Forum | Wed Oct 05 10:52:28 EDT 2005 | Rob
Sorry for the miss-understanding - there are at least 2 types of MSD cards - reversible & non reversible. We use the non-reversible type. Once exposed they record the max humidity through a one way chemical reaction.
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 | Wed Jan 19 17:01:18 EST 2000 | Chad Notebaert
You can buy desicant packs and indicator cards to place back in the original or a new bag with the BGA's and re-seal using a heat sealer (Vac Seal being the best). If properly done the material will be kept below the 20% RH level. Another option woul
Electronics Forum | Thu Jul 18 12:05:19 EDT 2002 | yngwie
Experts, Today I received PCB in a punctured vacuum seal bag. the Humidity indicator change the colour to pink at 60%RH mark. The brd finish is Entek. Earlier our intention to get the board vacuum seal is because we want to ensure that the is no fr
