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SFFS786 February 2024 TXU0204-Q1

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

2.3 TSSOP-14 and VQFN-14 Package

This section provides Functional Safety Failure In Time (FIT) rates for TSSOP-14 andVQFN-14 package of TXU0204-Q1 based on industry-wide used reliability standards:

Table 2-3 provides FIT rates based on IEC TR 62380 / ISO 26262 part 11

Table 2-3 Component Failure Rates per Siemens Norm SN 29500-2

Table	Category	Reference FIT Rate	Reference Virtual T_J
5	CMOS Analog switch, Bus Interface	5 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.