SFFS379A September   2022  – March 2023 TLV766-Q1

 

  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 the TLV766-Q1 based on two different industry-wide used reliability standards:

Table 2-1 Component Failure Rates per IEC TR 62380 / ISO 26262 Part 11
FIT IEC TR 62380 / ISO 26262 FIT (Failures Per 109 Hours)
Total component FIT rate 10
Die FIT rate 6
Package FIT rate 4

The failure rate and mission profile information in #GUID-DCF3AEF0-70D2-4927-9704-A593676BEEFE/GUID-D2F32BF7-F0F2-45BD-945E-5E9A117DF52F comes from the reliability data handbook IEC TR 62380 / ISO 26262 part 11:

  • Mission profile: Motor control from table 11
  • Power dissipation: 500 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 Siemens Norm SN 29500-2
Table Category Reference FIT Rate Reference Virtual TJ
5 CMOS, BICMOS
Digital, analog, or mixed		 25 FIT 55°C

The reference FIT rate and reference virtual TJ (junction temperature) in #GUID-DCF3AEF0-70D2-4927-9704-A593676BEEFE/GUID-F6448F76-6F1A-4872-8629-AFB15459B793 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.