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| EURO QUARTZ 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 49USMX CRYSTALS 49SMD Standard and Low Profile 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: Frequency Stability over Temp. AT-Cut: BT-Cut: Operating Temperature Range: Shunt Capacitance (C0): Load Capacitance (CL): Ageing: 3.2MHz to 70MHz 30ppm at 25C standard 10ppm available 30ppm over -10 ~ +60* 100ppm over -10 ~ +60C* -10 ~ +60C to -40 ~ +85C 4pf typical, 7pF maximum Series or from 8pF to 32pF (Customer specified) 3ppm maximum in first year 1ppm per year thereafter (Ta = 25C, drive 100mW) 100mW typical, 500mW maximum 260C, 10s maximum Hermetic seal, resistance weld EIA 24mm tape and reel 1000 pieces per reel Compliant Drive Level: Reflow Soldering: Holder: Packaging: RoHS Status: 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 PART NUMBER GENERATION 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 25C (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 |
Price & Availability of 1200049USMXL3050-2018ATF
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