ECSS-Q-ST-60C Rev.1 – Electrical, electronic and electromechanical (EEE) components (6 March 2009)

This Standard has been cancelled and replaced by ECSS-Q-ST-60C Rev.2 (21 October 2013).


This standard defines the requirements for selection, control, procurement and usage of EEE components for space projects.

This standard differentiates between three classes of components through three different sets of standardization requirements (clauses) to be met.

The three classes provide for three levels of trade‐off between assurance and risk. The highest assurance and lowest risk is provided by class 1 and the lowest assurance and highest risk by class 3. Procurement costs are typically highest for class 1 and lowest for class 3. Mitigation and other engineering measures may decrease the total cost of ownership differences between the three classes.

The project objectives, definition and constraints determine which class or classes of components are appropriate to be utilised within the system and subsystems.
a. Class 1 components are described in Clause 4.
b. Class 2 components are described in Clause 5
c. Class 3 components are described in Clause 6.

The requirements of this document apply to all parties involved at all levels in the integration of EEE components into space segment hardware and launchers.

This standard may be tailored for the specific characteristics and constraints
constrains of a space project in conformance with ECSS‐S‐ST‐00.


Md5 checksum .doc file = BD52E86EF2C1DEA8B6AF3228967DFC94
Md5 checksum .pdf file = 32B26BE5AE95BAE0A1132B322085B218

This standard cancels and replaces ECSS-Q-ST-60C (31July 2008).