The purpose of vibration tests is to evaluate the effect caused on component parts by vibration in a specified frequency range. The samples...
The requirements about WHEN is necessary to apply any Lot Acceptance Test, Lot Validation Test, or Qualification on many EEE components are established in documents like ECSS-Q-ST-60C, ECSS-Q-ST-60-13C for commercial EEE components… and at the project level.
The requirement about WHAT to do and HOW are included in documents like Generic Specifications, MIL-STD Test Methods, NASA EEE-INST-002, and NASA PEM-INST-001…
ALTER TECHNOLOGY has an accumulated experience in EEE parts lot validation.
LOT ACCEPTANCE TEST / QCI (sampling basis)
To provide greater reliability assurance concerning the the devices’ environmental, mechanical assembly, and endurance.
Within the ESA/SCC (now ESCC) system, the Lot Acceptance Tests (now Lot Validation tests) are specified in Chart V (now Chart F3) of the appropriate Generic Specification and indicate which tests are performed, how many parts are required for each test and how many failures are permitted for each of the tests.
Within MIL system, QCI/TCI are specified in the generic specification:
• QCI group A and B correspond to Electrical test and LAT3 tests
• QCI group C corresponds to Endurance subgroup (LAT2 and part of LAT1)
• QCI group D corresponds to Mechanical subgroup (LAT1)
• QCI group E corresponds to Radiation tests
