What is BS EN 16602-70-12 - Design rules for PCB space product assurance about?  
BS EN 16602-70-12 is a European standard that discusses space product assurance.
BS EN 16602-70-12 specifies the requirements for the supplier and PCB manufacturer for PCB design.
BS EN 16602-70-12 is applicable for all types of PCBs, including sequential, rigid, and flexible PCBs, HDI and RF PCBs.
BS EN 16602-70-12 can be made applicable for other products combining mechanical and electrical functionality using additive or reductive manufacturing processes, as used in PCB manufacturing. Examples of such products are slip rings and bus bars.
Who is BS EN 16602-70-12 - Design rules for PCB space product assurance for? 
BS EN 16602-70-12 on space product assurance is useful for: 
- PCB manufacturers
- Aeronautical engineers
- Spacecraft manufacturers
- Astronauts
- Testing agencies involved in the inspection of aerospace products
Why should you use BS EN 16602-70-12 - Design rules for PCB space product assurance?  
PCBs are used for the mounting of electronic components to produce PCB assemblies that perform electrical functions. The PCBs are subjected to thermomechanical stress during assembly such as soldering of components, rework and repair under normal terrestrial conditions.
In addition, the assembled PCBs are exposed to the launch and space environment. The reliability of the circuit depends on the robustness of the design, among other factors. Moreover, PCB design with high technological complexity enables the use of complex components with advanced functionality.
Requirements in BS EN 16602-70-12 generally state minimum dimensions permitted. It is good practice to use minimum dimensions only when necessary to achieve the desired functionality and to design with a margin when possible. For instance, it is recommended to implement minimum insulation distance between tracks only when space limitations prevent larger insulation distance. It is recommended to implement fan out of tracks which allow for larger insulation distances where more space is available.
The provision of BS EN 16602-70-12 can help to meet the defined mission objectives, and more specifically, that they are safe, available, and reliable. This can ensure adequate identification, evaluation, prevention, and control of technical risks within the limits of the project.
