ECSS-Q-ST-20-10C – Off-the-shelf items utilization in space systems (8 October2010)


This Standard applies to all parties involved at all levels in the utilization of OTS items into space segment hardware and launchers. For the purpose of this Standard, Off‐the‐Shelf (OTS) Items are those that, even if not necessarily developed for space applications, can be procured from the market and utilized in a space system. This Standard contains the requirements for the utilization of OTS Items, in terms of their selection, characterization and procurement for space system use. This Standard considers complex OTS items, as for example: motherboards, cards, data storage units/items, optical equipments, photo cameras and video units, LANs, mechanical/electrical and electromechanical devices, batteries, sensors, monitoring support units, medical equipments and items, laptops.


This Standard does not cover:

  • software OTS,
  • re‐use of OTS items already qualified for space applications,
    NOTE However, items not belonging to the same lot of the OTS item already evaluated using this standard, can be subjected to partial re‐evaluation and re‐qualification since, on the commercial market, fast evolution of the design occurs.
  • Pieces, parts and materials, such as electrical, electronic and electromechanical (EEE) parts, thermocouples, rivets, fasteners, connectors, fittings, adhesives, insulation, wiring and plumbing.


This standard is not specifically addressing the re‐use of OTS items for the same space application for which they were initially qualified. This standard may be tailored for the specific characteristic and constrains of a space project in conformance with ECSS‐S‐ST‐00.



Word files of Annexes:

Md5 checksum .doc file = 3917C0A5EE1B7AC4B4DABF84E76F0FBE
Md5 checksum .pdf file = CC64EC981608DF22587F4FC09464ECD1