SNOK010 November   2024 TPS7H6005-SEP , TPS7H6015-SEP , TPS7H6025-SEP

 

  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.   A References

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. Assume a minimum shielding configuration of 100mils (2.54mm) of aluminum, and worst-week solar activity (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 shown on Table 9-1 and Table 9-2, respectively. Note that this number is for reference since no SEL or SEB/SEGR events were observed. SET orbit rate for the TPS7H60X5-SEP device is listed in SEB/SEGR Event Rate Calculations for Worst-Week LEO and GEO Orbits. As no SET events were observed, the numbers provided are for reference.

Table 9-1 SEL Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2/mg)CREME96 Integral FLUX (/day/cm2)σSAT (cm2)Event Rate (/day)Event Rate (FIT)MTBE (Years)
LEO (ISS)

50.5

3.80 × 10–42.63 × 10-81.00 × 10–114.17 × 10–42.74 × 108
GEO1.23 × 10–33.24 × 10–111.35 × 10–38.45 × 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 (/day/cm2)σSAT (cm2)Event Rate (/day)Event Rate (FIT)MTBE (Years)
LEO (ISS)

50.5

3.80 × 10–41.42 × 10-85.39 × 10–122.24 × 10–45.09 × 108
GEO1.23 × 10–31.75 × 10–117.27 × 10–41.57 × 108
Table 9-3 SET Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2/ mg)CREME96 Integral FLUX ( / day / cm2)σSAT (cm2)Event Rate ( / day)Event Rate (FIT)MTBE (Years)
LEO (ISS)50.53.80 × 10-43.07 × 10–81.17 × 10–114.86 × 10–42.35 × 108
GEO1.23 × 10-33.78 × 10–111.58 × 10–37.24 × 107