SLVK231 November   2025 TPS7H4104-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 LETEFF and Range Calculation
  9. 6 Test Setup and Procedures
  10. 7 Destructive Single-Event Effects (DSEE)
    1. 7.1 Safe Operating Area (SOA) Results
    2. 7.2 Single-Event Latch-up (SEL) Results
    3. 7.3 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

5 LETEFF and Range Calculation

TPS7H4104-SEP Generalized Cross-Section of the LBC7 Technology BEOL Stack on the TPS7H4104-SEP [Left] and SEUSS 2024 Application Used to Determine Key Ion Parameters [Right]Figure 5-1 Generalized Cross-Section of the LBC7 Technology BEOL Stack on the TPS7H4104-SEP [Left] and SEUSS 2024 Application Used to Determine Key Ion Parameters [Right]

The TPS7H4104-SEP is fabricated in the TI Linear BiCMOS 250-nm process with a back-end-of-line (BEOL) stack consisting of 4 levels of standard thickness aluminum. The total stack height from the surface of the passivation to the silicon surface is 10.04 μm based on nominal layer thickness as shown in Figure 5-1. Accounting for energy loss through the degrader, copper foil, beam port window, air gap, and the BEOL stack of the TPS7H4104-SEP, the effective LET (LETEFF) at the surface of the silicon substrate and the range was determined with:

  • SEUSS 2024 software (provided by TAMU and based on the latest SRIM-2013 [7] models)
  • MSU Stack-Up Calculator (provided by MSU FRIB and based on latest SRIM-2013 [7] models).

The results are shown in Table 5-1.

Table 5-1 Ion LETEFF and Range in Silicon

Facility

ION TYPE

Beam Energy (MeV/nucleon)

ANGLE OF INCIDENCEDEGRADER STEPS (#)DEGRADER ANGLE

Copper Foil Width (µm)

Beam Port Window

RANGE IN SILICON

(µm)

LETEFF (MeV·cm2/mg)

TAMU

109Ag

15

0

0

0

-

1-mil Aramica

95.1

48

TAMU

165Ho

15

0

0

0

-

1-mil Aramica

93.9

75

KSEE

109Ag

19.5

0

0

0

5

3-mil PEN

89.3

48

KSEE

169Tm

19.5

0

0

0

5

3-mil PEN

90

75