1、 MIL-PRF-3098/7J 05 March 2010 SUPERSEDING MIL-PRF-3098/7H 19 December 2003 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR25/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product described herein sh
2、all consist of this specification sheet and MIL-PRF-3098. Pertinent characteristics: 200 kHz to 555 kHz; fundamental: noncontrolled; series resonance. FIGURE 1. Crystal unit - CR25/U. AMSC N/A FSC 5955 INCH POUND Copyright Communications - Electronics Command Provided by IHS under license with CRAIN
3、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/7J 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. FIGURE 1. Crysta
4、l unit - CR25/U - Continued. Ltr Inches mm Min Max Min Max A - .352 - 8.94 B - .725 - 18.42 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 0.64 H - .317 - 8.05 J - .775 - 19.69 K .223 .248 5.66 6.30 L .048 .052 1.22 1.32 M .075 .141 1.91 3.58 N
5、.015 .025 0.38 0.64 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/7J 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency range: 200 kHz
6、to 555 kHz, inclusive. Frequency tolerance: 100 parts per million (ppm). Equivalent resistance: See table II. Mode of oscillation: Fundamental. Operating temperature range (noncontrolled): -40C to +85C, inclusive. Rated drive level: 1.0 mW, maximum. Resonance: Series. Shock (specified pulse): Freque
7、ncy change permitted: 10 ppm. Equivalent resistance change permitted: 15 percent. Vibration: Method 201 of MIL-STD-202. Frequency change permitted: 10 ppm. Equivalent resistance change permitted: 15 percent. Temperature run: Frequency change permitted: 10 ppm. Equivalent resistance change permitted:
8、 15 percent. Bond strength: See table I. TABLE I. Bond strength. Frequency range, inclusive (kHz) Grams, minimum 200 to 250 250+ to 320 320+ to 370 370+ to 435 435+ to 555 700 500 400 300 250 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo repro
9、duction or networking permitted without license from IHS-,-,-MIL-PRF-3098/7J 4 TABLE II. Equivalent resistance. Part or Identifying Number (PIN): CR25/U (followed by specified frequency), see 1.2 of MIL-PRF-3098. Referenced documents. In addition to MIL-PRF-3098, this document references the followi
10、ng: 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 c
11、autioned 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 - 99 Agent: DLA - CC DLA - CC Review activities: (Project 5955
12、-2009-024) Army - AR, MI Navy - AS, MC, SH Air Force - 17, 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 d
13、atabase at https:/assist.daps.dla.mil/ Frequency range, inclusive Maximum resistance kHz 200 to 225 225+ to 265 265+ to 290 290+ to 330 330+ to 370 370+ to 410 410+ to 425 425+ to 460 460+ to 555 Ohms 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,500 7,500 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
