processes are sampled throughout production by SCADA to
ensure that they remain “in control,” and the mean values
and variance are logged in CNet for predictive and prevention
analyses. The Performance Excellence group monitors
the summary process performance reports to analyze Cpk
to determine periods of greater stability and standardize the
process gain. Corrective and preventive actions are identified
when control is not maintained.
Test coupon holes are automatically designed in all boards to
provide test-plated holes for process verification and assurance
that the production process performs as designed. By utilizing
a process design that is well within the design tolerances, Collin
ensures that products meet customer requirements. Collin’s
products are designed to operate in extreme environments.
To ensure performance on a sample basis, boards are subjected
to extreme environmental conditions to verify compliance with
customer requirements and to ensure reliable lifetime operation.
These tests are performed in the process laboratory.
A prime customer requirement is OTD. Managing process
throughput is the best indicator that the product will be ready
in time for scheduled delivery. Results for throughput are
shown in Figure 7.1-9.