SFFS521A September 2022 – November 2024 LM5168 , LM5169
This section provides functional safety failure in time (FIT) rates for the WSON package of LM5168 and LM5169 based on two different industry-wide used reliability standards:
FIT IEC TR 62380 / ISO 26262 | FIT (Failures Per 109 Hours) |
---|---|
Total component FIT rate | 11 |
Die FIT rate | 5 |
Package FIT rate | 6 |
The failure rate and mission profile information in Table 2-3 comes from the reliability data handbook IEC TR 62380 / ISO 26262 part 11:
Table | Category | Reference FIT Rate | Reference Virtual TJ |
---|---|---|---|
5 | CMOS/BICMOS ASICs, analog and mixed HV > 50V Supply |
30 FIT | 75°C |
The reference FIT rate and reference virtual TJ (junction temperature) in Table 2-4 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.