1、 AMSC N/A FSC 5955 INCH-POUND MIL-PRF-3098/129D 7 August 2009 SUPERSEDING MIL-PRF-3098/129C 17 May 2004 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR148/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring th
2、e product described herein shall consist of this specification sheet and MIL-PRF-3098. Pertinent characteristics: 10 MHz to 61 MHz; third mechanical overtone; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR148/U. Provided by IHSNot for ResaleNo reproduction or networking permitted witho
3、ut license from IHS-,-,-MIL-PRF-3098/129D 2 Ltr Inches mm Min Max Min Max A - .352 - 8.94 B - .725 - 18.42 C .223 .248 5.66 6.30 D .030 .037 0.76 0.94 E .460 .476 11.68 12.09 F - .757 - 19.23 G .030 .040 0.76 1.02 H .015 .025 0.38 0.64 J - .775 - 19.68 K - .317 - 8.05 L .015 .025 0.38 0.64 M .075 .1
4、41 1.90 3.58 N .048 .052 1.22 1.32 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Marking to be in accordance with MIL-PRF-3098. FIGURE 1. Crystal unit - CR148/U - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted wi
5、thout license from IHS-,-,-MIL-PRF-3098/129D 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency range: 10.0 MHz to 61.0 MHz, inclusive. Capacitance, shunt: 7.0 pF, maximum. Mode of oscillation: Third mechanical overtone. Rated drive level: 1.0 mW, maximum. Calibration va
6、lues: Equivalent resistance: 51 ohms. Resistor voltage drop: 0.32 volt. Resonance: Series. Operating temperature range (noncontrolled): -55C to +105C, inclusive. Frequency tolerance: 0.0005 percent. Equivalent resistance: 40 ohms, maximum. Unwanted modes: Minimum unwanted-to-main mode resistance rat
7、io of 2:1. Shock: Frequency change permitted: 0.0005 percent. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Vibration: Method 201, MIL-STD-202. Frequency change permitted: 0.0005 percent. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is
8、 greater. Temperature cycling: Frequency change permitted: 0.0005 percent. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Aging: Frequency change permitted: 0.0005 percent. Reference documents. In addition to MIL-PRF-3098, this document references the following:
9、MIL-STD-202 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 cautio
10、ned 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 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/129D 4 Custodians: Preparin
11、g activity: Army - CR DLA - CC Navy - EC Air Force - 99 (Project 5955-2009-039) DLA - CC Review 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-,-,-
