MIL-PRF-3098/120E
Rated drive level: 1.0 mW, maximum.
Capacitance, shunt: 7.0 pF, maximum.
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Shock (specified pulse): The violation of P = I R is intentional at the higher resistance of the crystal
unit.
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted:
0.8 MHz to 2.0 MHz ±15 percent.
2.0 MHz + to 20.0 MHz ±10 percent.
Vibration: Method 201 of MIL-STD-202.
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted:
0.8 MHz to 2.0 MHz ±15 percent.
2.0+ MHz to 20.0 MHz ±10 percent.
Thermal shock:
Frequency change permitted: ±5 ppm.
Equivalent resistance change permitted: ±15 percent.
Aging:
Frequency change permitted: ±5 ppm.
NOTE: This crystal unit is identical to the CR27/U, except for a load capacitance rating of 30 pF ±0.5 pF.
This unit is not interchangeable with the CR27/U.
Part or Identifying Number (PIN): For Product Level B, PIN shall be CR131/U or CR131B/U (followed by
specified frequency). For Product Level S, PIN shall be CR131S/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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