SNVA961A May   2020  – November 2024 LM26420-Q1

 

  1.   1
  2. 1Overview
  3. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 HTSSOP-20 Package
    2. 2.2 WQFN-16 Package
  4. 3Failure Mode Distribution (FMD)
  5. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 HTSSOP-20 Package
    2. 4.2 WQFN-16 Package
  6. 5Revision History

2.1 HTSSOP-20 Package

This section provides functional safety failure in time (FIT) rates for the HTSSOP-20 package of LM26420-Q1 based on an industry-wide used reliability standard:

  • Table 2-1 provides FIT rates based on IEC TR 62380 / ISO 26262 part 11

Table 2-1 Component Failure Rates per IEC TR 62380 / ISO 26262 Part 11
FIT IEC TR 62380 / ISO 26262FIT (Failures Per 109 Hours)
Total component FIT rate16
Die FIT rate4
Package FIT rate12

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: Automotive control from table 11
  • Power dissipation: 750mW
  • Climate type: World-wide table 8
  • Package factor (lambda 3): Table 17b
  • Substrate material: FR4
  • EOS FIT rate assumed: 0 FIT