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                   354                       MEMS and Microstructures in Aerospace Applications






                             Post release                           Gross leak test
                            device receipt                      MIL-STD-883 Method 1014
                                                                     Condition C


                        Precap visual inspection
                       MIL-STD-883 Method 2010                    Interim electricals at
                           Condition A or                             25 C DC
                        (Hybrid Method 2017)

                                                                     Burn-in test
                        Packaging and sealing                   MIL-STD-883 Method 1015
                                                                   160 Hrs @ 125 C


                                                                   Final electrical test
                          Stabilization bake
                       MIL-STD-883 Method 1008                  + 25 C, +125 C, −55 C DC
                            Condition C
                                                                (Includes functional tests)
                                                                     + 25 C AC
                         Temperature cycling
                       MIL-STD-883 Method 1010
                            Condition C                             External visual
                                                               MIL-STD-883 Method 2009


                         Constant acceleration
                       MIL-STD-883 Method 2001
                         Condition E (Y1 Only)                    Move to next higher
                                                                    integration step


                            Fine leak test
                       MIL-STD-883 Method 1014
                            Condition B



                   FIGURE 16.1 Suggested test and inspection steps derived from MIL-PRF-38535 General
                   Specification IC (Microcircuits) Manufacturing and MIL-STD-883 Test Methods for Micro
                   Electronics.

                       A generic screening procedure derived from the military specifications is shown
                   in Table 16.1 and has been adapted from the microcircuit specifications MIL-PRF-
                   38535F. This screening procedure then can be mission tailored to meet the
                   environmental constraints required.
                       An example of a mission specific tailoring of the test plan is shown in Table
                   16.2. Tests may be added or deleted depending on the MEMS technology involved.





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