SFFS134 November 2022 TIOS1023 , TIOS1025

2 Functional Safety Failure In Time (FIT) Rates

This section provides Functional Safety Failure In Time (FIT) rates for TIOS102(x) based on two different industry-wide used reliability standards:

Table 2-1 provides FIT rates for TIOS1023/TIOS1025 (with LDO) based on IEC TR 62380/ISO 26262 part 11
Table 2-2 provides FIT rates for TIOS102 (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 (TIOS1023, TIOS1025)

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 (TIOS102)

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 T_J
5	BICMOS, ASIC, Analog & Mixed ≤ 50 V Supply	25 FIT	55°C

The Reference FIT Rate and Reference Virtual T_J (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.