What is PD IEC/TR 62240‑1 - Temperature uprating of process management for avionics about?
PD IEC/TR 62240‑1 is the first part of the PD IEC TR 62240 series.
This part of IEC 62240, which is a technical report, provides information when using semiconductor devices in wider temperature ranges than those specified by the device manufacturer. The uprating solutions described herein are considered exceptions when no reasonable alternatives are available; otherwise, devices are utilized within the manufacturers’ specifications.
The terms “uprating” and “thermal uprating” are being used increasingly in the avionics industry discussions and meetings, and clear definitions are included in Clause 3. They were coined as shorthand references to a special case of methods commonly used in selecting electronic components for circuit design.
Note: PD IEC/TR 62240‑1 does not imply that applications use the device to function beyond the absolute maximum rating limits specified by the original device manufacturer and assumes that:
- Device usage outside the original device manufacturers’ specified temperature ranges is done only when no reasonable alternative approach is available and is performed with appropriate justification
- If it is necessary to use devices outside the original device manufacturers’ specified temperature ranges, it is done with documented and controlled processes that assure the integrity of the electronic equipment
Who is PD IEC/TR 62240‑1 - Temperature uprating of process management for avionics for?
PD IEC/TR 62240‑1 on process management for avionics is useful for:
- Electronic component manufacturers
- Aerospace electric equipment and system manufacturers
- OEMs
- Industrial sector
- Avionics industry
- Electronics industry
Why should you use PD IEC/TR 62240‑1 - Temperature uprating of process management for avionics?
Traditionally, industries that produced electronic equipment for ADHP (aerospace, defence and high performance) applications have relied on the military specification system for semiconductor device standards and upon manufacturers of military-specified devices as device sources. This assured the availability of semiconductor devices specified to operate over the temperature ranges required for electronic equipment in ADHP applications. In the past, several device manufacturers have exited the military market, resulting in the decreased availability of devices specified to operate over wide temperature ranges.
PD IEC/TR 62240‑1 provides information on selecting semiconductor devices, assessing their capability to operate, and assuring their intended quality in the wider temperature ranges. It also reports the need for documentation of such usage.
PD IEC TR/62240‑1 describes the methods and processes for implementing this special case of thermal uprating. All of the elements of these methods and processes employ existing, commonly used best engineering practices. No new or unique engineering knowledge is needed to follow these processes, only a rigorous application of the overall approach.
The electronic equipment manufacturer uprating the component utilizes a process to demonstrate that the component will meet the reliability and lifetime requirements of the ADHP application. Additionally, operation of the device beyond the electronic component manufacturer’s limits can result normally in loss of warranty by the device manufacturer.
With PD IEC TR/62240‑2 you can thus identify and understand the technology of devices in sufficient detail to assess the likelihood and consequences of potential failure mechanisms.
