SBOK061 October   2022 SN54SLC8T245-SEP

 

  1.   SN54SLC8T245-SEP Single-Event Effects (SEE)
  2.   Trademarks
  3. 1Overview
  4. 2SEE Mechanisms
  5. 3Test Device and Test Board Information
  6. 4Irradiation Facility and Setup
  7. 5Results
    1. 5.1 Single Event Latchup (SEL) Results
    2. 5.2 Single Event Transient (SET) Results
    3. 5.3 Event Rate Calculations
  8. 6Summary
  9.   A References

5.3 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 (2.54 mm) of aluminum, and worst-week solar activity (this is similar to a 99% upper bound for the environment). Table 5-3 and Table 5-4 provides the event rate calculation using the 95% upper-bounds for the SEL and the SET, respectively.

Note: It is important to note that This number is for reference since no SEL or SET events were observed.
Table 5-3 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 1.85 × 10–7

1.18 × 10–10

4.93 × 10–3

2.31 × 107
GEO 2.17 × 10–3 4.01 × 10–10

1.67 × 10–2

6.82 × 106
Table 5-4 SET 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 3.69 x 10–6

2.36× 10–9

9.84× 10–2

1.16 × 106
GEO 2.17 × 10–3

8.01× 10–9

3.34 × 10–1

3.42 × 105