Overview
IEC TR 62396-7:2017 - “Process management for avionics – Atmospheric radiation effects – Part 7” - is a technical report from IEC that describes a practical, example process for managing Single Event Effects (SEE) caused by atmospheric radiation in avionics electronic equipment. The document focuses on electronic components, equipment and electronic functions (component and equipment level), and is intended to support design reviews, component management and the aerospace certification process. It is informative (a Technical Report), not a normative requirements document.
Key topics
- Radiation analysis process - an end-to-end workflow that starts with mission/environment inputs and ends with a radiation report and ongoing component management.
- Inputs to SEE analysis - operational mission profile, neutron flux (atmospheric radiation), bill of materials (BoM), equipment architecture and design data.
- Component SEE sensitivity assessment - evaluating susceptibility of devices (e.g., SEU, SEL, SET, SEFI, SEB) based on device type and technology trends (smaller feature sizes, lower voltages).
- Mitigation and equipment effects - identifying existing protections, architectural mitigations, error detection/correction (EDAC/ECC), and how equipment-level behaviors influence SEE risk.
- Rate calculation and risk analysis - estimating SEE rates for components to feed safety/reliability assessments.
- Radiation testing - guidance on when and how component/assembly testing may be used to validate susceptibility and mitigation effectiveness (see also IEC 62396-2 for testing detail).
- Design change and acceptance loop - iterating design or accepting residual risk based on analysis and testing outcomes.
- Deliverables and lifecycle - producing a radiation report and performing ongoing component management to support long-term avionics reliability.
Applications
IEC TR 62396-7 is practical for:
- Avionics hardware designers assessing SEE vulnerability during design and design review.
- Reliability and safety engineers integrating SEE data into safety/reliability analyses (P/SSA, SSA).
- Component management teams maintaining BoMs and qualification records for COTS or custom parts.
- Test laboratories and suppliers planning radiation testing and interpreting results.
- Certification and compliance teams needing documented traceability of SEE analysis and mitigation for aerospace authorities.
Related standards
- IEC 62396-1:2016 - overall accommodation of atmospheric radiation effects (terminology and higher-level guidance).
- IEC 62396-2 - SEE testing methods (referenced for radiation test techniques).
- JEDEC/industry documents and aerospace certification guidance commonly used alongside IEC TR 62396-7.
Keywords: IEC TR 62396-7, single event effects (SEE), atmospheric radiation, avionics design, SEE analysis, radiation testing, electronic component susceptibility, aerospace certification.