1、 INCH-POUND AMSC N/A FSC 5955 MIL-PRF-3098/52H 13 April 2010 SUPERSEDING MIL-PRF-3098/52G 9 December 2004 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR75/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: 50 MHz to 125 MHz; fifth mechanical overtone; controlled; series resonance. FIGURE 1. Crystal unit - CR75/U. Copyright Communications - Electronics Command Provided by IHS under license
3、 with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/52H 2 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. The pin undercut may be omitted. 4. Marking to be in accordance with MIL-PRF-3098. FIGU
4、RE 1. Crystal unit - CR75/U - Continued. Ltr Inches mm Min Max Min Max A - .352 - 8.94 B - .725 - 18.41 C .030 .037 0.76 0.94 D .478 .494 12.14 12.55 E - .757 - 19.23 F .030 .040 0.76 1.02 G .015 .025 0.38 0.63 H - .317 - 8.05 J - .775 - 19.68 K .223 .248 5.66 6.30 L .048 .052 1.22 1.32 M .075 .141
5、1.90 3.58 N .015 .025 0.38 0.63 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/52H 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency ra
6、nge: 50.0 MHz to 125 MHz, inclusive. Frequency tolerance: Operating temperature range: 10 parts per million (ppm). Room temperature: 70 ppm. Equivalent resistance: 40 ohms, maximum. Mode of oscillation: Fifth mechanical overtone. Reference temperature: +75C 1C. Temperature ranges: Operable temperatu
7、re range: -55C to +70C and +80C to +90C, inclusive. Operating temperature range (controlled): +70C to +80C, inclusive. Drive level: 1.0 mW maximum. Resonance: Series. Capacitance, shunt: 7.0 pF, maximum. Shock (specified pulse): Frequency change permitted: 5 ppm. Equivalent resistance change permitt
8、ed: 10 percent. Vibration: Method 201 of MIL-STD-202. Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 10 percent. Thermal shock: Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 10 percent. Aging: Frequency change permitted: 5 ppm. Copyright Commu
9、nications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/52H 4 Part or Identifying Number (PIN): CR75/U (followed by specified frequency), see 1.2 of MIL-PRF-3098. Reference documents. In ad
10、dition 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 previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any ina
11、ccuracies 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. Custodians: Preparing activity: Army - CR Army - CR Navy - EC Air Force -
12、99 Agent: DLA - CC DLA - CC Review activities: (Project 5955-2009-061) Army - AR, MI, SM Navy - AS, MC, SH 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 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-,-,-
