MIL-PRF-3098/93C
REQUIREMENTS:
Dimensions, marking, and configuration: See figure 1.
Frequency range: 30 MHz to 63 MHz, inclusive.
Frequency tolerance:
Operating temperature range: ±0.0015 percent of frequency measured at 25C.
Reference temperature: ±0.001 percent.
Mode of oscillation: Third mechanical overtone.
Operating temperature range (noncontrolled): -40C to +65C, inclusive.
Reference temperature: 25C.
Operable temperature range: +65C to +80C, inclusive.
Frequency and equivalent resistance: Method A, MIL-PRF-3098.
Resonance: Series.
Rated drive level: 1.0 mW, maximum.
Calibration values:
Resistance: 40 ohms.
Crystal current: 0.28 mA.
Capacitance, shunt: 7 pF, maximum.
Equivalent resistance: 40 ohms, maximum.
Shock: Method 202, MIL-STD-202.
Frequency change permitted: ±0.0005 percent.
Equivalent-resistance change permitted: ±10 percent.
Vibration: Method 204, MIL-STD-202, test condition A; .03 inch (0.76 mm) (.06 inch (15.24 mm) total
excursion) 10 cps to 55 cps; amplitude to produce 5 gravity units, 55 cps to 500 cps.
Frequency change permitted: ±0.0005 percent.
Equivalent-resistance change permitted: ±10 percent.
Aging:
Frequency change permitted: ±0.0005 percent.
Reference documents. In addition to MIL-PRF-3098, this document references the following:
The margins of this specification are marked with vertical lines to indicate where changes from the previous issue
were made. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document
based on the entire content irrespective of the marginal notations and relationship to the last previous issue.
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