MIL-PRF-3098/118E
REQUIREMENTS:
Dimensions, marking, and configuration: See figure 1.
Frequency range: 20 MHz to 22 MHz, inclusive.
Frequency tolerance: ±50 ppm.
Mode of oscillation: Fundamental.
Operating temperature range (noncontrolled): -55°C to +105°C, inclusive.
Rated drive level: 1.0 mW, maximum.
Capacitance, shunt: 12.0 pF, maximum.
Antiresonance load capacitance: 30.0 pF ±0.5 pF.
Equivalent resistance: 40 ohms, maximum.
Shock:
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted: ±10 percent.
Vibration: Method 201 of MIL-STD-202.
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted: ±10 percent.
Thermal shock:
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted: ±10 percent.
Aging:
Frequency change permitted: ±5 ppm.
Part or Identifying Number (PIN): For Product Level B, PIN shall be CR139/U or CR139B/U (followed by
specified frequency). For Product Level S, PIN shall be CR139S/U (followed by specified frequency),
see 1.2 of MIL-PRF-3098.
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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