XT49M Vishay Dale Low Profile SMD Type Crystal Units FEATURES • Low cost • Industry standard • Wide frequency range • Excellent aging • Surface mount This part is a miniature AT cut strip crystal unit packaged for surface mounting. STANDARD ELECTRICAL SPECIFICATIONS PARAMETER Frequency Range Frequency Tolerance Temperature Stability Operating Temperature Range Storage Temperature Range Shunt Capacitance Load Capacitance Insulator Resistance Drive Level Aging SYMBOL Fo ∆F/Fo TC TOPR TSTG Co CL IR DL Fa CONDITION at 25ºC ref to 25ºC Customer Specified 100VDC at 25ºC, per year UNIT MHz ppm ppm °C °C pF pF MΩ µW ppm MIN 3.200 ± 10 ± 10 - 20* - 40 TYPICAL ± 30 ± 30 10 500 100 - 5.0 MAX 66.000 ± 50 ± 50 + 70* + 85 7 Series 500 + 5.0 EQUIVALENT SERIES RESISTANCE (ESR) AND MODE OF VIBRATION (MODE) FREQUENCY RANGE(MHZ) MAX ESR(Ω) MODE FREQUENCY RANGE(MHZ) MAX ESR(Ω) MODE 3.200 to 4.499 4.500 to 5.999 6.000 to 6.999 7.000 to 7.999 8.000 to 8.999 150 120 100 90 80 Fundamental/AT Fundamental/AT Fundamental/AT Fundamental/AT Fundamental/AT 9.000 to 9.999 10.000 to 12.999 13.000 to 30.000 30.000 to 66.000 60 50 40 80 Fundamental/AT Fundamental/AT Fundamental/AT 3rd Overtone DIMENSIONS in inches [millimeters] 0.403 [10.24] Max CRYSTAL UNIT 0.008 [0.2] Max 0.150 [3.8] Max 0.150 [3.8] Max 0.177 [4.5] Max 0.012 [0.3] Max 0.508 ± 0.016 [12.9 ± 0.4] 0.449 ± 0.012 [11.4 ± 0.3] INSULATION BASE 0.354 [9.0] 0.236 [6.0] CRYSTAL LEAD 0.078 [2.0] 0.185 ± 0.012 [4.7 ± 0.3] 0.031 ± 0.012 [0.8 ± 0.3] SOLDER PATTERN 0.201 ± 0.020 [5.1 ± 0.5] ORDERING INFORMATION XT49M MODEL Document Number: 35012 Revision: 14-Aug-03 R OTR - 20 LOAD Blank = Standard R = - 40°C to +85°C Blank = Series - 20 = 20pF - 30 = 30pF - 32 = 32pF For technical questions contact: [email protected] 20M FREQUENCY/MHz www.vishay.com 1