scope:

This standard provides a means of selecting, procuring and applying Electrical, Electronic, and Electromechanical (EEE) Parts for use in flight and mission-essential ground support equipment. The list is limited to the following Federal Stock Classes:

Part Types FSC * Capacitors 5910 * Circuit Breakers 5925 * Connectors 5935 * Crystals and Crystal Oscillators 5955 * Diodes 5961 * Fiber Optics 60GP (FSG) * Filters 5915 * Fuses 5920 * Inductors 5950 * Microcircuits 5962 * Relays 5945 * Resistors 5905 * Thermistors 5905 * Transformers 5950 * Transistors 5961 * Wire and cable 6145

The purpose of this standard is to provide equipment designers and manufacturers with electronic parts having quality levels considered to be most acceptable for flight and mission-essential ground support equipment.

Three levels of quality are used in this standard. Grade 1 parts are very low risk, higher quality and reliability parts intended for critical applications. Grade 2 parts are low risk, high quality and reliability parts for use in applications not requiring Grade 1 parts. Grade 3 parts are higher risk, good quality and reliability parts but are not recommended for applications requiring high product assurance levels.