SFFS380 February   2022 TIOL112 , TIOL1123 , TIOL1125

 

  1.   Trademarks
  2. 1Overview
  3. 2Functional Safety Failure In Time (FIT) Rates
  4. 3Failure Mode Distribution (FMD)
  5. 4Pin Failure Mode Analysis (Pin FMA)
  6. 5Revision History

2 Functional Safety Failure In Time (FIT) Rates

This section provides Functional Safety Failure In Time (FIT) rates for TIOL112(x) family based on two different industry-wide used reliability standards:

  • Table 2-1 provides FIT rates for TIOL1123/TIOL1125 (with LDO) based on IEC TR 62380 / ISO 26262 part 11
  • Table 2-2 provides FIT rates for TIOL112 (without LDO) based on IEC TR 62380 / ISO 26262 part 11
  • Table 2-3 provides FIT rates based on the Siemens Norm SN 29500-2

Table 2-1 Component Failure Rates per IEC TR 62380 / ISO 26262 Part 11 (TIOL1123, TIOL1125)
FIT IEC TR 62380 / ISO 26262 FIT (Failures Per 109 Hours)

DRC-10 (VSON Package)
Total Component FIT Rate

9
Die FIT Rate

5
Package FIT Rate 4

The failure rate and mission profile information in Table 2-1 comes from the Reliability data handbook IEC TR 62380 / ISO 26262 part 11:

  • Mission Profile: Motor Control from Table 11
  • Power dissipation: 550 mW
  • Climate type: World-wide Table 8
  • Package factor lambda 3 Table 17b
  • Substrate Material: FR4
  • EOS FIT rate assumed: 0 FIT

Table 2-2 Component Failure Rates per IEC TR 62380 / ISO 26262 Part 11 (TIOL112)
FIT IEC TR 62380 / ISO 26262 FIT (Failures Per 109 Hours)

DRC-10 (VSON Package)
Total Component FIT Rate

7
Die FIT Rate

3
Package FIT Rate 4
The failure rate and mission profile information in Table 2-2 comes from the Reliability data handbook IEC TR 62380 / ISO 26262 part 11:
  • Mission Profile: Motor Control from Table 11
  • Power dissipation: 200 mW
  • Climate type: World-wide Table 8
  • Package factor lambda 3 Table 17b
  • Substrate Material: FR4
  • EOS FIT rate assumed: 0 FIT
Table 2-3 Component Failure Rates per Siemens Norm SN 29500-2
Table Category Reference FIT Rate Reference Virtual TJ
5 BICMOS, ASIC, Analog & Mixed ≤ 50 V Supply 25 FIT 55°C

The Reference FIT Rate and Reference Virtual TJ (junction temperature) in Table 2-3 come from the Siemens Norm SN 29500-2 tables 1 through 5. Failure rates under operating conditions are calculated from the reference failure rate and virtual junction temperature using conversion information in SN 29500-2 section 4.