1、AMSC N/A FSC 5955 INCH-POUND MIL-PRF-3098/54G 7 January 2010 SUPERSEDING MIL-PRF-3098/54F 9 December 2004 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR73/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 sheet and MIL-PRF-3098. Pertinent characteristics: 17 MHz to 61 MHz; third mechanical overtone; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR73/U. Copyright Communications - Electronics Command Provided by IHS under licen
3、se with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/54G 2 Ltr Inches mm Min Max Min Max A - .435 - 11.05 B - .183 - 4.65 C - .402 - 10.21 D .027 .032 0.68 0.81 E .184 .200 4.67 5.08 F - .183 - 4.65 G - .530 - 13.46 H .223 .248 5.66 6.30 J .015
4、025 0.38 0.63 K .165 .175 4.19 4.45 L .038 .042 0.96 1.07 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. 4. The pin undercut may be omitted. FIGURE 1. Crystal unit - CR73/U - Continued. REQUIREMENTS
5、 Dimensions, marking, and configuration: See figure 1. Frequency range: 17.0 MHz to 61.0 MHz, inclusive. Frequency tolerances: 30 parts per million (ppm). Rated drive level: 1.0 mW, maximum. Resonance: Series. Equivalent resistance: 17.0 MHz to 30.0 MHz: 40 ohms, maximum and 10 ohms, minimum. 30.0+
6、 MHz to 61 MHz: 30 ohms, maximum and 5 ohms, minimum. Unwanted modes: Method II, twice main mode resistance. Mode of oscillation: Third mechanical overtone. Operating temperature ranges: -55C to +105C, inclusive. Capacitance, shunt: 17 MHz to 30.0 MHz: 3.5 pF 0.5 pF. 30.0+ MHz to 61.0 MHz: 4.0 pF 0.
7、5 pF. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/54G 3 Shock (specified pulse): Frequency change permitted: 3 ppm. Equivalent resistance change permitted: 15 per
8、cent. Thermal shock: Frequency change permitted: 3 ppm. Equivalent resistance change permitted: 15 percent. Vibration: Method 204 of MIL-STD-202, Test condition A. Frequency change permitted: 3 ppm. Equivalent resistance change permitted: 15 percent. Aging: Frequency change permitted: 3 ppm. Part or
9、 Identifying Number (PIN): CR73/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 with vertical lines to indicate where changes from the prev
10、ious 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
11、 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 5955-2009-063) Army - AR, MI Navy - AS, MC, SH Air Force - 19, 84 NOTE: The activities listed above were interested in this
12、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-,-,-
