XT49M Vishay Dale Quartz Crystals 3.579MHz to 66.0MHz FEATURES * Low profile. * Hermetically sealed. * Tape and reel packaging. STANDARD ELECTRICAL SPECIFICATIONS FREQUENCY RANGE (MHz) STANDARD SPECIFICATIONS Operating Temperature Range: 0C to + 70C. (- 40C to + 85C optional). MODE OF VIBRATION ESR MAX. (Ohms) 3.579 - 3.999 4.0 - 4.499 4.5 - 4.999 "AT" Fundamental "AT" Fundamental "AT" Fundamental 150 150 120 5.0 - 5.999 6.0 - 6.999 7.0 - 7.999 8.0 - 8.999 "AT" Fundamental "AT" Fundamental "AT" Fundamental "AT" Fundamental 120 100 90 80 9.0 - 9.999 10.0 - 12.999 13.0 - 19.999 "AT" Fundamental "AT" Fundamental "AT" Fundamental 60 50 40 Load: 10 to 32pF or series resonant. 20.0 - 30.0 30.001 - 66.0 "AT" Fundamental "AT" 3rd Overtone 40 80 Shunt Capacitance: 7pF maximum. Frequency Range: 3.579MHz to 66.0MHz. Frequency Tolerance: 50ppm @ + 25C 3C (typical). Temperature Stability: 50ppm (typical). Storage Temperature: - 40C to 85C. Mode of Vibration: "AT" Fundamental, or "AT" 3rd Overtone. Drive Level: 1mW maximum. Seal: Resistance weld. DIMENSIONS in inches [millimeters] 0.450 0.024 [11.4 0.6] 0.150 [3.80] Max. 0.406 [10.3] Max. 0.178 0.008 [4.5 0.2] 0.039 [1.0] Max. 0.177 [4.5] Max. 0.485 0.024 [12.3 0.6] ORDERING INFORMATION XT49M MODEL R OTR Blank = Standard R = - 40C to + 85C Document Number 35012 Revision 18-Dec-01 - 20 LOAD 20M FREQUENCY/MHZ Blank = Series - 20 = 20pF - 30 = 30pF - 32 = 32pF For technical questions, contact frequency@vishay.com www.vishay.com 11