ISO224EVM: baking inspection of the MSL component

Part Number: ISO224EVM


Dear sir/mam,
 
We have been using your devices in many of our designs for various applications. In the process of Baking the MSL level component, we have encountered a problem as below;
 
"During the process of baking the MSD component at +125 °C in a chamber for 48 hours, the chamber door was opened in the middle of the 48 hours duration (around 44th hour) to introduce a tray consisting of PCBs into the same chamber which also needed the same baking temperature of +125 °C for 4 to 6 hours duration."
 
 
So, we have a few queries related to the above process.
 
  1. Can we open the chamber door in between the baking duration - to add another batch of MSD components for shorter duration or even longer duration or to add PCBs, etc.
     
  2.  What is the effect on the component which is undergoing baking when the chamber door is opened before the completion of baking duration.
     
  3.  Do we need to extend the baking duration if the chamber door is opened in between the baking process.
     
  4. Do we need to repeat the baking for the complete 48 hours duration.
 
Please suggest/recommend us further course of action need to be taken to resolve the above said issue.
 
 
Thanking you and looking forward to hear from you soon.
  • Hi Babu,

    Sorry for the delay.  It is recomended to keep the chamber closed for the specified bake time.  The entire bake cycle may need to be restarted according to IPC/JEDEC J-STD-033 standards to ensure proper drying.  Can I ask what this has to do with the ISO224EVM though?

  • Hi Tom Hendrick,

    Thankyou for reply.

    While creating the issue part number was not showed so, I created the case with ISO224EVM.

    We need your recommendation particular to our case to proceed further. Should we repeat entire process or any specific process is there?