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 | Thu Jun 29 10:53:30 EDT 2023 | matouschekd
Repairing these PCBs was not an option due to the delivery amount. Oxidation is unlikely, as these anomalies were visible right after unpacking them and the humidity card was not suspicious. We have since decided not to use these PCBs as the risks w
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 | Mon Jul 15 14:10:38 EDT 2013 | cyber_wolf
One of our aerospace customers "suggested" we vacuum seal MSD components. We bought a vacuum sealer and we are deciding whether or not to vacuum seal ALL MSD parts or just aerospace. Our current method consist of desiccant, a humidity card and a bag
Electronics Forum | Mon Sep 21 15:45:35 EDT 2009 | boardhouse
Hi Ryan, Standard shelf life for FR4 Non-RoHs & Rohs material with HASL or Lead Free HASL would be 12 months + in a controlled environment. on all RoHs materials over 6 months, we would suggest your board shop run a solder ability test before ship
Electronics Forum | Thu Apr 18 19:00:06 EDT 2013 | jorge_quijano
Hola.. I have several PCBs with some kind of oxidation, my supplier has told me that there is no problem with that oxidation, it will have no effet on soldering and press fit processes, PCBs were received 1 year ago, but they are well packaged and h
Electronics Forum | Wed Aug 11 06:27:07 EDT 2021 | danisa
Hi all, The PCBA was swollen after SMD It is hard PCBA with 6 layers and SMD both sides Defect rate: ~ 5% Phenomenon: swell at the same side, same position (at 2 IC positions). Did not find any abnormality in SMD process as well as storage condition.
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 | Mon Feb 22 13:15:43 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
Electronics Forum | Wed May 04 19:09:52 EDT 2005 | russ
Can you not just check the part when it is on line and being loaded into the machine? You should only need to check this once. Verify your setup to the bom and not your assembled boards to the BOM. Correct setup and program = correct boards. More
