SPRADI9 June   2024 AM623 , AM625

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Design-Based Approach
  6. 3Background
    1. 3.1 Process Delivery Kit (PDK)
    2. 3.2 SPICE Models for Circuit Behavior
    3. 3.3 Electronic Design Automation (EDA) Tools
    4. 3.4 Package Reliability
  7. 4Comparison of Design-Based Approach vs. HTOL Approach
  8. 5AM625/623 Lifetime Reliability Analysis Results
  9. 6Conclusion
  10. 7Revision History
  11.   A Appendix – The HTOL-Based Approach
  12.   B Appendix – The Mathematic Basis for EM Reliability Estimates

Process Delivery Kit (PDK)

The backbone of the design process is defined under the umbrella of Process Delivery Kit (PDK) for the technology node. From a reliability perspective, once the silicon wafer manufacturing process baseline flow is defined, component-level reliability is executed by the wafer fab. These tests assess potential intrinsic wear-out mechanisms that can effectively limit the useful lifetime of the final product. Generally, the tests are highly-accelerated, meaning stress conditions are much more aggressive than final product application use conditions, and are tested to failure to enable characterization of reliability models (which can involve testing a multiple stress conditions to define acceleration models.) Each test has defined pass/fail criteria, consistent with the overall reliability targets of the silicon technology. Critically, the component-level tests can be performed at much higher levels of stress than HTOL testing, enabling granular reliability models (necessitating observed failures) and compressed execution times.