SBOK078 October   2023 SN54SC4T08-SEP

PRODUCTION DATA  

  1.   1
  2.   2
  3.   Trademarks
  4. 1Overview
  5. 2Single-Event Effects (SEE)
  6. 3Test Device and Test Board Information
  7. 4Irradiation Facility and Setup
  8. 5Results
    1. 5.1 SEL Results
    2. 5.2 Event Rate Calculations
  9. 6Summary
  10. 7References

5.2 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. A minimum shielding configuration of 100 mils (2.54 mm) of aluminum, and worst-week solar activity (this is similar to a 99% upper bound for the environment) is assumed. It is important to note that this number is for reference since no events were observed.

Table 5-2 SEL 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) MTBF (Years)
LEO (ISS) 43 6.40 × 10–4 1.23 × 10–7 7.87 × 10–11 3.28 × 10–3 3.48 × 107
GEO 2.17 × 10–3 2.67 × 10–10 1.11 × 10–2 1.03 × 107