EURO QUARTZ MF & MF2 CRYSTALS 6 x 3.5mm SMD, 4 pad or 2 pad FEATURES Miniature size: 6.0mm x 3.5mm height Tight tolerances available High shock and vibration resistance Ideal for PDAs, GPS, PCMCIA and hand-held equipment OUTLINE & DIMENSIONS MF DESCRIPTION Miniature surface mount MF crystals incorporate a ceramic substrate and hermetically-sealed metal lid. The compact size and low mass with a high-specification crystal make MF crystals ideal for high density applications as well as hand-held and communications equipment. SPECIFICATION Frequency Range AT-Cut Fundamental: AT-Cut 3rd Overtone: Calibration Tolerance at 25C*: Frequency stability -10 to +60C -20 to +70C -40 to +90C -55 to +125C Storage Temperature: Equivalent Series Resistance: Shunt Capacitance (C0): Load Capacitance (CL): Ageing: Drive level: Reflow Soldering: Package: Packaging: 10.0MHz to 50.0MHz 30.0MHz to 125.0MHz from 5ppm (10, 20 or 30ppm standard) from 5ppm from 10ppm from 15ppm from 20ppm -55~+105C See table 2pF to 4pF typical, 7pF maximum Series or from 8pF to 32pF (Customer specified CL) <3ppm per year at +25C 100 mW maximum 10s maximum, 260C twice or 180s at 230C, once. Ceramic base, metal lid, Hermetic seal 16mm EIA tape and reel 1000 pieces per reel EQUIVALENT SERIES RESISTANCE Frequency Crystal Cut/ ESR Range MHz Mode Ohms Max. 10.0 ~ 12.0 AT Fund. 80 12.1 ~ 16.0 AT Fund. 60 16.1 ~ 50.0 AT Fund. 40 30.0 ~ 40.0 AT 3rd OT 100 40.1 ~ 50.0 AT 3rd OT 80 50.1 ~ 125 AT 3rd OT 50 MF2 PART NUMBER GENERATION Example: 12.000MHz MF/20/30/-10+60/18pF/60R Nominal Frequency Package (MF = 4 pad, MF2 = 2 pad 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) Equivalent Series Resistance (Optional - use when special value is required) 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