Senior Applications Engineer
Flexible Circuit Technologies
Mark Finstad has over 30 years in the flex circuit industry in both design and manufacturing. He is a regular speaker at IPC APEX (Professional development courses) and PCB West (flex circuit design courses). He is also vice chair of IPC-2223 and active member of IPC-6013. Finstad has extensive experience with both domestic and off-shore manufacturing.
Mark Finstad has submitted responses to the following questions.
Tough Hand Soldering Problem
Without knowing the exact type of soldering problems you are having, I can only hypothesize based on your description of ...
Exposed Copper Risk
I would not recommend leaving exposed copper in ANY environment. There are a couple of ways to deal with this ...
Pre-bake in a Vacuum
Using a vacuum oven to prebake bare flex and rigidflex circuits prior to soldering operations can be beneficial due to ...
Class 2 vs. Class 3
The IPC standards that most clearly define the differencesbetween classes would be IPC-2222/IPC-6012 Design/Performance for rigid PCB)and IPC-2223/IPC6013 (Design/Performance for ...
Delamination Causing Scrap
The easiest way to determine if moisture is the problem is tobake your bare PCBs immediately prior to assembly and ...