What is “crystal aging” and what are the aging specifications for these custom Ecliptek crystals?
Aging is the systematic change in frequency with time due to internal changes in the crystal and/or oscillator. Aging is often expressed as a maximum value in parts per million per year [ppm/year]. The rate of aging is logarithmic in nature. The following factors effect crystal aging: adsorption and desorption of contamination on the surfaces of the quartz, stress relief of the mounting and bonding structures, material outgassing, and seal integrity. At a rated operating temperature of 25C, these custom crystal products typically age at a rate of ±3ppm over the first year, ±1ppm over the following year, logarithmically declining each year thereafter. The aging parameters for each product can be found on the applicable specification sheets.
Related Questions
- Who do I contact if I have additional technical questions about the use of the Ecliptek custom quartz crystals integrated with the ICS VCXO ICs?
- What are the "Environmental and Mechanical Specifications" for the custom Ecliptek quartz crystals?
- What is "crystal aging" and what are the aging specifications for these custom Ecliptek crystals?
