SLVK199 August   2025 TPS7H3024-SP

 

  1.   1
  2.   TPS7H3024-SP Single-Event Effects (SEE)
  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 LETEFF and Range 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 described in Heavy Ion Orbital Environment Single-Event Effects Estimations application report. We assume a minimum shielding configuration of 100 mils (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, SEB/SEGR, and SET, the event rate calculation for the SEL, SEB/SEGR, and SET are shown in Table 9-1, Table 9-2, and Table 9-2, respectively. It is important to note that this number is for reference since no SEL, SEB/SEGR, or SET 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 (/day/cm2)σSAT (cm2)EVENT RATE (/day)EVENT RATE (FIT)MTBE (years)
LEO (ISS)756.26 × 10–56.15 × 10-83.85 × 10–121.60 × 10–47.12 × 108
GEO1.77 × 10–41.09 × 10–114.53 × 10–42.52 × 108
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)

75

6.26 × 10–53.07 × 10-81.92 × 10–128.02 × 10–51.42 × 109
GEO1.77 × 10–45.43 × 10–122.26 × 10–45.04 × 108
Table 9-3 SET (Enabled) 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)

75

6.26 × 10–5

9.22 × 10–85.77 × 10–12

2.41 × 10-4

4.75 × 108
GEO1.77 × 10–41.63 × 10–11

6.79 × 10-4

1.68 × 108
Table 9-4 SET (Disabled) Event Rate Calculations for Worst-Week LEO and GEO Orbits
ORBIT TYPE ONSET LETEFF (MeV-cm2/mg) CREME96 INTEGRAL FLUX (/day/cm2) σSAT (cm2) EVENT RATE (/day) EVENT RATE (FIT) MTBE (years)
LEO (ISS) 75 6.26 × 10–5 1.84 × 10–7 1.15 × 10–11 4.81 × 10-4 2.37 × 108
GEO 1.77 × 10–4 3.26 × 10–11 1.36 × 10-3 8.40 × 107