Electronics Forum | Wed Aug 20 13:49:51 EDT 2008 | mrmaint
We used a custom label that we would put on the parts packaging. The label would indicate the MSD level, the maximun hrs of exposure allowed. Also it had fields that whoever opened up that part would write down the date and time the packaging was ope
Electronics Forum | Mon Feb 09 07:55:16 EST 2015 | jax
Without knowing the surface finish of the PCB lets focus on an alternative problem... At a minimum, you need to look at the 1/2 built assembly like individual components, all having their own MSD levels and all subject to 2nd side reflow temperatures
Electronics Forum | Tue Jun 16 18:03:41 EDT 2020 | rsatmech
Thanks for your response. Shorts are happening in different locations(Not same pad repeated) .kindly note these are happening one in 10kThat's the challenge to understand the exact issue. Only one short. Vias - i will check and updated. Yes it's
Electronics Forum | Thu May 06 08:29:41 EDT 2004 | Christopher Lampron
10% RH) Do these stored components need baking before I use them now or not? * Depends on the MSD level (should be marked on packaging) Level 6 component need to be baked prior to asembly no matter what. Other levels should be OK if they were store
Electronics Forum | Thu May 06 10:21:09 EDT 2004 | Rob
Let me pose this scenario and ask your opinion. My manufacturing plant is located in New Orleans. Since summer is close upon us, the humidity in my SMT room where the machines and components reside get around 30-50%RH. I've got this Siemens waffle ch
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 Jul 19 04:10:21 EDT 2005 | Rob
Hi, On a semi related front, part of our company is a distributor (I'm not going to say who, coz that would be sneaky advertising), and on all components shipped we've added the follwing to the label: ROHS Compliancy Status(Lead free & plastics etc
Electronics Forum | Wed Aug 26 03:21:00 EDT 2009 | sergey2007
Hi Graham, the MSD level of the component is 3. I am not sure that my customer properly stored the component before the soldering process. And I am not sure that it was dried at all. The customer says they did everything that they had to, but I just
Electronics Forum | Mon Feb 09 08:34:50 EST 2015 | saoasasd
In my case most of the PCBs are OSP finishing and worst case of MSD component on bottom side is level 3 (168 hours). You mean that PCB shelf life with bottom side assembled shoud be 84 hours?
Electronics Forum | Sun Feb 25 11:59:33 EST 2007 | stepheniii
Just make sure you keep the half done assemblies in dry storage or do the second reflow within the time dictated by the BGAs MSD rating level. Maybe this time you did the second side with a very short wait because you were anxious about the results
