1、 MIL-PRF-3098/50E 13 April 2010 SUPERSEDING MIL-PRF-3098/50D 9 December 2004 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR72/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein s
2、hall consist of this specification sheet and MIL-PRF-3098. Pertinent characteristics: 17Hz to 61 MHz; third mechanical overtone; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR72/U. AMSC N/A FSC 5955 INCH POUND Reactivated after 9 December 2004 and may be used for new and existing desig
3、ns and acquisitions. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/50E 2 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information
4、 only. 3. Marking to be in accordance with MIL-PRF-3098. FIGURE 1. Crystal unit - CR72/U - Continued. Ltr Inches mm Min Max Min Max A - .183 - 4.65 B - .435 - 11.05 C - .402 - 10.21 D - .530 - 13.46 E .500 - 12.70 - F .016 .019 0.41 0.48 G - .150 - 3.81 H .184 .200 4.67 5.08 Copyright Communications
5、 - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/50E 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency range: 17Hz to 61 MHz, inclusive. Capacitance, shunt: 7.0
6、pF maximum. Frequency tolerance: Operating temperature range: 50 ppm. Equivalent resistance: 40 ohms, maximum. Mode of oscillation: Third mechanical overtone. Calibration values: Resistance: 40 ohm, maximum. Resistor voltage drop: 0.28 volt. Rated drive level: 2.0 0.4 mW. Resonance: Series. Operatin
7、g temperature range: -55C to +105C, inclusive. Shock (specified pulse): Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 10 percent. Vibration high frequency: Method 204 of MIL-STD-202, test condition A. Frequency change permitted: 5 ppm. Equivalent resistance change permit
8、ted: 10 percent. Thermal shock: Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 10 percent. Aging: Frequency change permitted: 5 ppm. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted
9、 without license from IHS-,-,-MIL-PRF-3098/50E 4 Part or Identifying Number (PIN): CR72/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: MIL-STD-202 The margins of this specification are marked wit
10、h 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 t
11、he entire content irrespective of the marginal notations and relationship to the last previous issue. Custodians: Preparing activity: Army - CR Army - CR Navy - EC Air force - 99 Agent: DLA - CC DLA - CC Review activities: (Project 5955-2009-059) Army - AR, MI Navy - AS, CG, MC, OS, SH, TD Air Force
12、 - 19, 84, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
