1、 INCH-POUND AMSC N/A FSC 5955 MIL-PRF-3098/108E 6 March 2013 SUPERSEDING MIL-PRF-3098/108D 16 January 2006 PERFORMANCE SPECIFICATION SHEET CRYSTAL UNIT, QUARTZ, CR128/U This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring
2、 the product described herein shall consist of this specification and MIL-PRF-3098. Pertinent characteristics: 17 MHz to 61 MHz; third mechanical overtone; noncontrolled; series resonance. FIGURE 1. Crystal unit - CR128/U. Provided by IHSNot for ResaleNo reproduction or networking permitted without
3、license from IHS-,-,-MIL-PRF-3098/108E 2 Ltr Inches mm Min Max Min Max A - .402 - 10.21 B - .183 - 4.65 C - .435 - 11.05 D .184 .200 4.67 5.08 E - .530 - 13.46 F .50 - 12.7 - G - .150 - 3.81 H .015 .019 0.38 0.48 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general informa
4、tion only. 3. Marking to be in accordance with MIL-PRF-3098. FIGURE 1. Type CR128/U, crystal unit - Continued. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/108E 3 REQUIREMENTS: Dimensions, marking, and configuration: See figure 1. Fre
5、quency range: 17 MHz to 61 MHz, inclusive. Capacitance, shunt: 7 pF, maximum. Mode of oscillation: Third mechanical overtone. Rated drive level: 1.0 mW, maximum. Resonance: Series. Operating temperature range (noncontrolled): -55C to +105C, inclusive. Operable temperature range: +105C to +125C, incl
6、usive. Frequency tolerance (operating temperature range): 50 ppm. Equivalent resistance: 40 ohms, maximum. Shock (specified pulse): Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Vibration: Method 204, MIL-STD-202, test conditio
7、n A; 0.015 inch (0.03 inch total excursion) 10 Hz to 55 Hz; or an amplitude to produce 10 gravity units, 55 Hz to 500 Hz, whichever is the limiting value. Frequency change permitted: 5 ppm. Equivalent resistance change permitted: 15 percent or 2 ohms, whichever is greater. Thermal shock: 50 ppm. Agi
8、ng: Frequency change permitted: 10 ppm. Reference documents. In addition to MIL-PRF-3098, this document references the following: MIL-STD-202 The margins of this specification sheet are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a conveni
9、ence 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 and relationship to the last previous issue. Pr
10、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-3098/108E 4 Custodians: Preparing activity: Army - CR Army - CR Navy - EC Air Force - 85 Agent: DLA - CC DLA - CC Review activities: (Project 5955-2012-017) Air Force - 19, 84, 99 NOTE: The activi
11、ties 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.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
