Realistic component failure rate data is critical to an effective Failure Modes, Effects, and Diagnostic Analysis (FMEDA). This failure rate data can eventually be obtained from component parts manufacturers, research and field failure data analysis. For example, exida’s Component Reliability Database (CRD) has been built from internet research, technical papers, component books, meeting with the component manufacturers themselves, field failure data analysis, and – in the case of electrical components – failure rate analysis formulas from IEC TR 62380. 

The time required to research and analyze the sources listed above and determine accurate failure rates can vary depending on component complexity. However, for simplicity, our experience tells us that a reasonable range of 24 to 48 person-hours of analysis for a single component.  This work can be done over a period of several weeks to several months.   

In some countries we are told that an average technical analyst may get paid a rate of $10 per hour. Using the estimates above, this amounts to $240 to $480 or analysis and research for the failure rate data for a single component. In other countries the engineering rates may easily be 3X to 10X higher. It is not hard to see how quickly the cost skyrockets for more complex systems with hundreds of components. 

exida’s Component Reliability Database (CRD) is available as three volumes of the CRD Handbook (Electrical, Mechanical, and Sensor Components).  For those who want only a particular component or so, exida offers single- and three-component packages as well.  Take a look at the component list on the exida website, Component Reliability Database (CRD) from exida. If we do not have what you need, let us know. exida invests nearly 1000 person-hours per year on failure rate analysis.  

Tagged as:     Valerie Motto     FMEDA     Failure Rates     CRD  

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