1、 MIL-PRF-3098/10H 05 March 2010 SUPERSEDING MIL-PRF-3098/10G 19 December 2003 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR28/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
2、shall consist of this specification sheet and MIL-PRF-3098. Pertinent characteristics: 0.8 MHz to 20 MHz; fundamental: controlled; series resonance. FIGURE 1. Crystal unit - CR28/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-3098/10H 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
4、 unit - CR28/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-3098/10H 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Frequency range: 0.8 MHz
6、to 20 MHz, inclusive. Capacitance, shunt: 7 pF, maximum. Frequency tolerance: Operating temperature range: 20 parts per million (ppm). Room temperature: 70 ppm. Frequency stability: 5 ppm. Equivalent resistance: See table I. Mode of oscillation: Fundamental. Reference temperature: +75C 1C. Temperatu
7、re ranges: Operable: -55C to +70C, and +80C to +90C, inclusive Operating (controlled): +70C to +80C, inclusive. Rated drive level: 1.0 mW, maximum. Resonance: Series. Shock (specified pulse): Frequency change permitted: 5 ppm. Equivalent resistance change permitted: Below 2MHz: 15 percent 2.0 MHz an
8、d above: 10 percent Vibration: Method 201 of MIL-STD-202. Frequency change permitted: 5 ppm. Equivalent resistance change permitted: Below 2MHz: 15 percent 2.0 MHz and above: 10 percent Thermal shock: Frequency change permitted: 5 ppm. Equivalent resistance change permitted: Below 2MHz: 15 percent 2
9、.0 MHz and above: 10 percent Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/10H 4 Aging: Frequency change permitted: 5 ppm. TABLE I. Equivalent resistance. Part or I
10、dentifying Number (PIN): CR28/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. The margins of this specification are marked with vertical lines to indicate where changes from the prev
11、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
12、 and relationship to the last previous issue. 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 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
13、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 520 480 440 400 380 340 300 270 250 220 180 160 150 120 90 70 52 45 37 25 20 18 15 Copyright Communications - Electronics Command Provided by IHS under license with CRAINot
14、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/10H 5 Custodians: Preparing activity: Army CR Army - CR Navy - EC Air force - 99 Agent: DLA - CC DLA - CC Review activities: (Project 5955-2009-027) Army - AR, MI Navy - AS, MC, SH Air Force - 17, 19, 84 NOTE
15、: 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-,-,-
