EURO QUARTZ 49SMD Crystals SMD form of HC49 Crystals 1.0MHz to 200.0MHz Low-cost, industry-standard crystal unit formed for SMD Available with close tolerances Frequency range 1.0MHz to 200MHz Specifications fully customisable OUTLINE & DIMENSIONS DESCRIPTION 49SMD crystals are long-established, industry-standard HC49 crystals with formed leads and a clip to facilitate surface mounting. The crystals provide a high quality but very low cost source of system clock frequency 49SMD crystals may be produced to very close tolerances. SPECIFICATION Frequency Range: 1.0MHz to 200MHz Oscillation Mode: See table Calibration Tolerance at 25C SL-Cut (<1.3MHz): from 50ppm AT-Cut (>1.3MHz): from 3ppm Frequency Stability over temperature SL-Cut (<1.3MHz): from 100ppm -10 to +60C AT-Cut (>1.3MHz): from 3ppm 0 to +50C (see table) Shunt Capacitance (C0): 4pF typical, 7pF maximum Load Capacitance (CL): Series or from 8pF to 32pF (Customer specified CL) Ageing: 3ppm maximum, 1st year, 1ppm per year thereafter. Drive Level: 100mW typical., 500mW max. Crystal Holder: Resistance-weld hermetic seal Supply format: Bulk pack or 'Ammo Pak' tape. ESR and OSCILLATION MODE Frequency Range MHz 1.0 ~1.3 2.01 ~ 3.0 3.01 ~ 3.2 3.21 ~ 3.5 3.51 ~ 3.9 3.91 ~ 5.0 5.01 ~ 7.0 7.01 ~ 10.0 10.0 ~ 30.0 30.1 ~ 45.0 24.0 ~ 100 80.0 ~ 160 110 ~ 250 Crystal Cut Osc. Mode SL Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT Fund. AT 3rd OT At 5th OT AT 7th OT ESR Max. 5000 400 200 150 120 100 50 35 25 20 40 70 120 STABILITY OVER TEMPERATURE RANGE (AT-CUT CRYSTALS) Stability ppm Temp. Range C 7.5 10 15 20 30 50 100 0~+50 -10~+60 -20~+70 -30~+80 -40~+85 -55~+125 u u X X X X u u u X X X u u u X X X u u u u X X u u u u u X u u u u u u u u u u u u (u= Available, X = Not available) PART NUMBER FORMAT Example: 8.000MHz 49SMD /10/10/-20+70/32/ 30R Frequency in MHz Package 49SMD or 49TSMD 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 info@euroquartz.co.uk www.euroquartz.co.uk