ANALYSIS TYPE / 05
Failure Rate · PMHF · Quantitative Targets
Overview
Reliability analysis quantifies the probability of hardware failure for electrical and electronic systems using failure rate databases such as IEC TR 62380, MIL-HDBK-217, and SN29500 — supporting PMHF and random hardware failure metric compliance under ISO 26262. Our reliability engineers select appropriate failure rate data sources, build component-level reliability models, and compute PMHF, SPFM, and LFM metrics for ASIL B, C, and D hardware elements — providing the quantitative evidence required for ISO 26262 Part 5 hardware assessment.
Industries Served
Standards
Key Aspects
Selecting appropriate failure rate data sources (IEC TR 62380, MIL-HDBK-217, SN29500, or manufacturer data) for each component in the design.
Computing the Probabilistic Metric for random Hardware Failures (PMHF) for ASIL B, C, and D functions to confirm compliance with the ISO 26262 quantitative targets.
Classifying all failure modes as safe or dangerous, detected or undetected, to calculate the SFF and verify that it meets the minimum threshold for the hardware safety integrity level.
Assessing how temperature, vibration, humidity, and operating hours affect the failure rate — and adjusting the PMHF calculation accordingly for the specific application environment.
Connect with our functional safety team to define the right approach, timeline, and tooling for your project.
