SBOK079 October   2023 TPS7H2140-SEP

PRODUCTION DATA  

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Single-Event Effects (SEE)
  6. 3 Device and Test Board Information
  7. 4 Irradiation Facility and Setup
  8. 5 Depth, Range, and LETEFF Calculation
  9. 6 Test Setup and Procedures
  10. 7 Destructive Single-Event Effects (DSEE)
    1. 7.1 Single-Event Latch-up (SEL) Results
    2. 7.2 Single-Event Burnout (SEB) and Single-Event Gate Rupture (SEGR) Results
  11. 8 Single-Event Transients (SET)
  12. 9 Event Rate Calculations
  13. 10Summary
  14. 11References

9 Event Rate Calculations

Event rates were calculated for LEO (ISS) and GEO environments by combining CREME96 orbital integral flux estimations and simplified SEE cross-sections according to methods shown in Heavy Ion Orbital Environment Single-Event Effects Estimations. A minimum shielding configuration of 100 mils (2.54 mm) of aluminum, and “worst-week” solar activity is assumed. (This is similar to a 99% upper bound for the environment.) Using the 95% upper-bounds for the SEL and the SEB/SEGR, the event rate calculation for the SEL and the SEB/SEGR is listed in Table 9-1 and Table 9-2, respectively. Note that this number is for reference since no SEL or SEB/SEGR events were observed.

Table 9-1 SEL Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2 / mg)CREME96 Integral FLUX ( per day / cm2)σSAT (cm2)Event Rate (per day)Event Rate (FIT)MTBE (Years)
LEO (ISS)484.50 × 10–46.38 × 10–82.87 × 10–111.20 × 10–39.54 × 107
GEO1.48 × 10–39.42 × 10–113.93 × 10–32.91 × 107
Table 9-2 SEB/SEGR Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2 / mg)CREME96 Integral FLUX (per day / cm2)σSAT (cm2)Event Rate (per day)Event Rate (FIT)MTBE (Years)
LEO (ISS)484.50 × 10–43.09 × 10–81.39 × 10–115.80 × 10–41.97 × 108
GEO1.48 × 10–34.56 × 10–111.90 × 10–36.00 × 107