What this code covers
Oscillators and Piezoelectric Crystals
Includes
Crystal Units, Processed Unmounted Crystals, Crystal Controlled Oscillators and Noncrystal Controlled Oscillators.
Excludes
Crystal Controlled Oscillators and Noncrystal Controlled Oscillators which meet the definition of the term. "electronic module" as defined for FSC 5963 and Microcircuits.