1、 AMSC N/A FSC 5955 INCH-POUND MIL-PRF-3098/87G 6 March 2013 SUPERSEDING MIL-PRF-3098/87F 16 January 2006 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR111/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring t
2、he product described herein shall consist of this specification and MIL-PRF-3098. Pertinent characteristics: 17 MHz to 62 MHz; third mechanical overtone; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR111/U. Provided by IHSNot for ResaleNo reproduction or networking permitted without li
3、cense from IHS-,-,-MIL-PRF-3098/87G 2 Ltr Inches mm Min Max Min Max A - .402 - 10.21 B - .183 - 4.65 C - .435 - 11.05 D .184 .200 4.67 5.08 E - .530 - 13.46 F .50 - 12.7 - G - .150 - 3.81 H .015 .019 0.38 0.48 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general informatio
4、n only. 3. Marking to be in accordance with MIL-PRF-3098. FIGURE 1. Type CR111/U, crystal unit - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/87G 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequen
5、cy range: 17 MHz to 62 MHz, inclusive. Capacitance, shunt: 4 pF, maximum. Mode of oscillation: Third mechanical overtone. Rated drive level: 1.0 mW, maximum. Resonance: Series. Reference temperature: +30C 1C. Operating temperature range (noncontrolled): -55C to +105C, inclusive. Frequency tolerances
6、: Operating temperature range: 50 ppm. Reference temperature: 15 ppm. Equivalent resistance: 40 ohms, maximum. Shock (specified pulse): Method 213, MIL-STD-202, with the following exceptions: 18 impact shocks of 5 gravity units each, time duration 11 milliseconds 1 millisecond. Three shocks shall be
7、 applied in each direction along each of three mutually perpendicular planes. Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Vibration: Method 204, MIL-STD-202, test condition A; 0.03 inch double amplitude or 5 gravity units, wh
8、ichever is less. Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Thermal shock: Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Aging: Frequency change permit
9、ted: 5 ppm. Reference documents. In addition to MIL-PRF-3098, this document references the following: MIL-STD-202 The margins of this specification sheet 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
10、 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. Provided by IHSNot for ResaleN
11、o reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/87G 4 Custodians: Preparing activity: Army - CR Army - CR Navy - EC Air Force - 85 Agent: DLA - CC DLA - CC Review activities: (Project 5955-2012-008) Air Force - 84, 99 NOTE: The activities listed above were interested
12、 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.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
