7.3728MHZ 49USMX/30/50/-40+85/18PF/ATF

EURO QUARTZ 49USMX CRYSTALS 49SMD Standard and Low Profile FEATURES Low cost crystal for mass market applications Surface mount version of HC49-4H crystal Comprehensie stockholding of standard frequencies Customized parts readily available Industry-standard package Low-profile versions available OUTLINE & DIMENSIONS DESCRIPTION 49USMX crystals are low profile surface mount crystals that have the same footprint as standard HC49 or HC49-4H crystals. 49USMD crystals are ideal for use in low cost, mass-market applications but are also able to be produced to close tolerances when required. SPECIFICATION Frequency Range: Calibration Tolerance: 3.2MHz to 70MHz ±30ppm at 25°C standard ±10ppm available Frequency Stability over Temp. AT-Cut: BT-Cut: Operating Temperature Range: Shunt Capacitance (C0): Load Capacitance (CL): Ageing: Drive Level: Reflow Soldering: Holder: Packaging: RoHS Status: ±30ppm over -10° ~ +60°* ±100ppm over -10° ~ +60°C* -10° ~ +60°C to -40° ~ +85°C 4pf typical, 7pF maximum Series or from 8pF to 32pF (Customer specified) ±3ppm maximum in first year ±1ppm per year thereafter (Ta = 25°C, drive 100mW) 100mW typical, 500mW maximum 260°C, 10s maximum Hermetic seal, resistance weld EIA 24mm tape and reel 1000 pieces per reel Compliant PART NUMBER GENERATION EQUIVALENT SERIES RESISTANCE Frequency Crystal Cut/ ESR Range MHz Mode Ohms Max. 3.2~3.4 3.5~4.0 4.1~4.9 5.0~5.9 6.0~8.9 9.0~9.9 10.0~12.9 13.0~24.0 24.1~30.0 24.0~48.0 27.0~30.0 30.0~50.0 50.1~70.0 AT-Fund. AT-Fund. AT-Fund. AT-Fund. AT-Fund. AT-Fund. AT-Fund. AT-Fund. AT-Fund. BT-Fund. AT-3rd OT AT-3rd OT AT-3rd OT 300 150 120 100 80 60 50 45 40 40 150 100 80 Example: 12.000MHz 49USMX/30/50/-20+70/18pF/ATF Nominal Frequency Package (height variants): 49USMX (4.2mm) 49USMXL (3.2mm) 49USMXL25 (2.5mm) Calibration tolerance at 25°C (±ppm) Temperature Stability over temp. range (±ppm) Operating Temp. Range (°C) (Lower and upper limits) Load Capacitance (Either SR for series or CL in pF) Crystal Mode ATF = AT-cut Fundamental BTF = BT-cut Fundmental AT3 = AT-cut 3rd Overtone EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 Email: info@euroquartz.co.uk www.euroquartz.co.uk