(Know Your Specifications, Revisions and Amendments)
The PCB industry has advanced significantly in the recent millennium. OEM specifications and requirements have also advanced due to the maturing technologies. With this the requirements of Electrical Test of these higher technology products has advanced as well. Long gone are the "Pin in Hole" technology PCBs now surpassed by the large multilayer, blind/buried and Rigid Flex technologies. For the suppliers of Electrical Test, be it "in-house" or sub-contracted the industry specifications can be confusing, and at times non-comprehensible.
This paper will outline and define what requirements must be adhered to for the OEM community to truly achieve the IPC class product from the Electrical Test standpoint. This will include the test point optimization matrix, Isolation (shorts) parameters and Continuity (opens) parameters. This paper will also address the IPC Class III/A additional requirements for Aerospace and Military Avionics.
First published in the 2012 IPC APEX EXPO technical conference proceedings.
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