1、 MIL-PRF-3098/3G 05 March 2010 SUPERSEDING MIL-PRF-3098/3F 19 December 2003 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR18/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: 0.8 MHz to 20 MHz; fundamental; noncontrolled; anti-resonance. FIGURE 1. Crystal unit - CR18/U. AMSC N/A FSC 5955 INCH POUND Copyright Communications - Electronics Command Provided by IHS under license with CRAINot
3、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/3G 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. Crystal u
4、nit - CR18/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 .01
5、5 .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-3098/3G 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency range: 0.8 MHz to
6、20 MHz, inclusive. Frequency tolerance: 50 parts per million (ppm). Equivalent resistance: See table I. Antiresonance, load capacitance: 32.0 pF 0.5 pF. Mode of oscillation: Fundamental. Operating temperature range (noncontrolled): -55C to +105C, inclusive. Rated drive level: 1.0 mW, maximum. Capaci
7、tance, shunt: 7 pF, maximum. Shock (specified pulse): Frequency change permitted: 0.8 MHz to 2.0 MHz: 10 ppm 2.0+ MHz to 20 MHz: 5 ppm Equivalent resistance change permitted: 0.8 MHz to 2.0 MHz: 15 percent 2.0+ MHz to 20 MHz: 10 percent Thermal shock: Frequency change permitted: 0.8 MHz to 2.0 MHz:
8、10 ppm 2.0+ MHz to 20 MHz: 5 ppm Equivalent resistance change permitted: 0.8 MHz to 2.0 MHz: 15 percent 2.0+ MHz to 20 MHz: 10 percent Vibration: Method 201 of MIL-STD-202. Frequency change permitted: 0.8 MHz to 2.0 MHz: 10 ppm 2.0+ MHz to 20 MHz: 5 ppm Equivalent resistance change permitted: 0.8 MH
9、z to 2.0 MHz: 15 percent 2.0+ MHz to 20 MHz: 10 percent Low temperature storage: Resistance: See table I. Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/3G 4 Tempera
10、ture run: Frequency change permitted: 0.8 MHz to 2.0 MHz: 10 ppm 2.0+ MHz to 20 MHz: 5 ppm Equivalent resistance change permitted: 0.8 MHz to 2.0 MHz: 15 percent 2.0+ MHz to 20 MHz: 10 percent Aging: Frequency change permitted: 5 ppm. TABLE I. Equivalent resistance. Part or Identifying Number (PIN):
11、 CR18/U (followed by specified frequency), see 1.2 of MIL-PRF-3098. Referenced documents. In addition to MIL-PRF-3098, this document references the following: MIL-STD-202. Frequency range, inclusive Maximum resistance MHz 0.80 to 0.85 0.85+ to 0.90 0.90+ to 1.00 1.00+ to 1.12 1.12+ to 1.25 1.25+ to
12、1.37 1.37+ to 1.50 1.50+ to 1.62 1.62+ to 1.75 1.75+ to 1.87 1.87+ to 2.00 2.00+ to 2.12 2.12+ to 2.25 2.25+ to 2.60 2.60+ to 3.00 3.00+ to 3.40 3.40+ to 3.75 3.75+ to 4.00 4.00+ to 5.00 5.00+ to 7.00 7.00+ to 10.00 10.00+ to 15.00 15.00+ to 20.00 Ohms 630 600 580 540 490 450 410 380 330 300 290 270
13、 250 200 150 110 90 75 60 35 24 22 20 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/3G 5 The margins of this specification are marked with vertical lines to indicat
14、e 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 cautioned to evaluate the requirements of this document based on the entire content irrespect
15、ive 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 5955-2009-022) Army - AR, MI Navy - AS, MC, SH Air Force - 17, 19, 84 NOTE: The activities list
16、ed 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-,-,-
