1、 AMSC N/A FSC 5955 INCH-POUND MIL-PRF-3098/90C 7 August 2009 SUPERSEDING MIL-PRF-3098/90B 17 May 2004 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR114/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the
2、product described herein shall consist of this specification sheet and MIL-PRF-3098. Pertinent characteristics: 2.9 MHz to 3.85 MHz; fundamental; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR114/U. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
3、om IHS-,-,-MIL-PRF-3098/90C 2 Ltr Inches mm Min Max Min Max A - .435 - 11.05 B - .402 - 10.21 C - .530 - 13.46 D .120 .130 3.05 3.30 E .184 .200 4.67 5.08 F - .150 - 3.81 G - .183 - 4.65 H .038 .042 0.96 1.07 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 - CR114/U - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/90C 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency ra
5、nge: 2.9 MHz to 3.85 MHz, inclusive. Frequency tolerance: Operating temperature range: 0.005 percent. Mode of oscillation: Fundamental. Operating temperature range (noncontrolled): -55C to +105C, inclusive. Capacitance, load: 32.0 pF .05 pF. Resonance: Series. Rated drive level: 1.0 mW, maximum. Cal
6、ibration values: Resistance: 100 ohms. Crystal current: 3.2 mA. Capacitance, shunt: 7 pF, maximum. Equivalent resistance: 300 ohms, maximum. Shock: Method 202, MIL-STD-202. Frequency change permitted: 0.0005 percent. Equivalent-resistance change permitted: 15 percent. Vibration: Method 204, MIL-STD-
7、202, test condition A; .10 inch (2.54 mm) double amplitude or 5 gravity units, whichever is less. Frequency change permitted: 0.0005 percent. Equivalent-resistance change permitted: 15 percent. Unwanted modes: Minimum unwanted mode effective resistance shall be at least twice that of the main mode,
8、or greater, over the operating temperature range -55C to +105C. Aging: Frequency change permitted: 0.0005 percent. Reference documents. In addition to MIL-PRF-3098, this document references the following: MIL-STD-202 The margins of this specification are marked with vertical lines to indicate where
9、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 t
10、he marginal notations and relationship to the last previous issue. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/90C 4 Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 99 (Project 5955-2009-033) DLA - CC Review
11、activities: Air Force - 19, 84 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 http:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
