Electronics Forum | Tue Sep 04 14:02:35 EDT 2018 | elsabudz
Hi Peter, I read your concerns regarding IC parts not packaged with desiccants and thought you may find our new Type 2 Humidity Indicator card of interest. Please visit https://www.clariant.com/type-2-humidity-indicator-card Thanks, Elsa
Electronics Forum | Mon Jul 16 15:47:52 EDT 2012 | davef
Here's what Desco says ... Humidity Indicator Card (HIC) A card on which a moisture-sensitive chemical is printed such that it will change color from blue to pink when the indicated relative humidity is exceeded. This is packed inside the moisture-se
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 | 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 | 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 | 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 | 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 | Fri Aug 12 22:10:24 EDT 2005 | Mika
I agree with all the prior postings! But I have some additional thoughts about this. If there is a build up of moistures (% humidity) inside the pcb; before you reflow the pcba; then you will have the result out of the oven, just as you described. My
Electronics Forum | Mon Feb 22 12:20:51 EST 1999 | Dave F
| Does anybody have any reliable alternatives to device bake out for plastic bodied components. We do not use a whole package at time and therefore have to oven bake the balance before we can use them. | I have come accross dry nitrogen storage cham
