SURFACE-MOUNT CRYSTALS MF CRYSTALS 6mm x 3.5mm SMD DESCRIPTION OUTLINES AND DIMENSIONS MF crystals are ultra-miniature surface-mount mount crystals. Produced with ceramic substrate and hermetically-sealed metal lid the compact size and low mass make this an ideal crystal for high-density applications. FEATURES · · · · · Ultra miniature size: 6.0mm x 3.5mm x 1.0mm height Gold-plated ceramic base with metal seam-welded lid Extremely low ageing High shock and vibration resistance Ideal for PDAs, GPS, PCMCIA and hand-held equipment GENERAL SPECIFICATION Frequency Range AT-Cut Fundamental: AT-Cut 3rd Overtone: Calibration Tolerance at 25ºC*: Frequency stability over temp**. Range -20° to +70°C: Range -30° to +85°C: Storage Temperature: Shunt Capacitance (C0): Load Capacitance (CL): Ageing: Drive level: Reflow Soldering: 12MHz to 50.0MHz 40.0MHz to 100.0MHz ±10ppm, ±20ppm or ±30ppm ±5ppm, ±10ppm or ±30ppm ±10ppm -40°~+85°C 2pF to4pF typical, 5pF maximum Series or 10pF to 32pF (Customer specified CL) <±3ppm per year at +25°C 100mW max 10s maximum at 260°C two times or 180s at 230°C, once. Ceramic base, metal lid, hermetic seal 16mm EIA tape and reel 3000 pieces per reel PART NUMBER GENERATION MF crystal part numbers are derived as follows: Example: 16.000MHz MF/ 10/50/10/30pF/ATF Frequency Package - MF Calibration Tolerance at 25°C Holder: (in ±ppm) Temperature Stability Packaging: (in ±ppm) Operating Temperature Range Notes: (lower figure of * Calibration Tolerance of ±5ppm at 25°C is available temperature range) ** Tighter tolerance, and lower ESR parameters are available, check withCircuit Condition Euroquartz technical sales. (CL in pF or SERIES) Mode - ATF (AT-Cut, fund.) - AT3 (AT-Cut, 3rd overtone) OSCILLATION MODE & ESR Frequency (MHz) Crystal Cut Oscillation Mode ESR (max) (Ohms) 12 ~ 16 16.1 ~ 50 40 ~ 67 67.0 ~ 100 AT Fund. AT Fund. AT 3rd OT AT 3rd OT 80 40 70 90 STOCKHOLDING AND CUSTOM PARTS Certain frequencies and specification of MF crystals are stocked by Euroquartz. Custom frequencies and specifications are readily manufactured to order on short lead times. Contact Euroquartz sales office for details. EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 1460 230000 Fax: +44 1460 230001 email: [email protected] web: www.euroquartz.co.uk