A radio frequency identification (RFID) tag is coupled to a circuit board
to track the specific operating and environmental conditions of each
manufacturing stage as the circuit board passes through the manufacturing
stages. An RFID reader and data collector are used at each stage to read
the RFID tag and store its identifying information along with processing
information, operating conditions, and results for each stage. This
permits to quickly and accurately collect manufacturing information for
each circuit board at various manufacturing stages as well as the
operating conditions for each stage at a particular time. Such
manufacturing metrics can then be retrieved on a stage-by-stage basis for
a particular circuit board by an identifier printed on the circuit board.