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| EURO QUARTZ FEATURES Miniature size: 7.0mm x 5mm x 1.2mm height Gold-plated ceramic base with metal seam-welded lid To minimize EMI the whole crystal may be grounded Tight tolerance of 10pppm for telecommunications use High shock and vibration resistance Ideal for PDAs, GPS, PCMCIA and hand-held equipment MQ & MQ2 CRYSTALS 7 x 5mm SMD, 4 pad or 2 pad * OUTLINE & DIMENSIONS DESCRIPTION Miniature surface-mount MQ crystals are produced using a ceramic substrate and fitted with a hermetically-sealed metal lid. The crystals are competitively priced, well-suited to mass-market electronic applications and may also be produced to close tolerances making this crystal a good choice for applications requiring low mass and tight tolerances. There are two package variants, 4 pad and two pad. MQ 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: Effective Series Resistance: Shunt Capacitance (C0): Load Capacitance (CL): Ageing: Drive level: Reflow Soldering: Package: Packaging: 6.0MHz to 45.0MHz 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 10pF 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 MQ2 EFFECTIVE SERIES RESISTANCE Frequency Crystal Cut/ ESR Range MHz Mode Ohms Max. 6.0 ~ 11.0 AT Fund. 60 11.1 ~ 14.0 AT Fund. 50 14.1 ~ 45.0 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 90 PART NUMBER GENERATION Example: 12.000MHz MQ/20/30/-10+60/18pF/60R Nominal Frequency Package (MQ = 4 pad, MQ2 = 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 |
Price & Availability of 12000MQ22030-101860
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