SURFACE-MOUNT CRYSTALS UM-1SMD and UM-5SMD CRYSTALS Surface-mount UM-1 and UM-5 OUTLINES AND DIMENSIONS DESCRIPTION UM1-SMD and UM-5SMD crystals are standard UM-1/UM-5 crystals but with formed leads and fitted with a clip to enable surface-mount PCB assembly. The crystal therefore offers the ease of surface-mount assembly with the technical benefits of close-tolerance crystal parameters achievable by the use of circular AT-Cut crystal blanks. FEATURES · · · · · · Surface mount version of UM-1/UM-5 Available with close tolerances Fully customisable for application requirements Quick deliveries available Industry-standard package Low installed cost GENERAL SPECIFICATION Frequency Range UM-1SMD: UM-5SMD: Oscillation Mode: Calibration Tolerance at 25ºC SL-Cut (<1.3MHz): AT-Cut (>1.3MHz): Frequency stability over temp SL-Cut (<1.3MHz): AT-Cut (>1.3MHz): Shunt Capacitance (C0): Load Capacitance (CL): Ageing: Drive level: Holder: Holder Variants: Supply format: 1.0MHz to 200MHz 10MHz to 200MHz See table from ±50ppm from ±3ppm from ±100ppm -10° to +60°C from ±3ppm 0° to +50°C See table for details 4pF typical, 7pF maximum Series or from 8pF to 32pF (Customer to specify CL) ±2ppm max 1st year, ±1ppm max per year after 100mW maximum Resistance-weld, hermetic seal UM-1SMD or UM-5SMD (See outline drawing) Bulk pack (standard) or tape and reel FREQUENCY STABILITY OVER TEMPERATURE Temperature Stability (ppm) Operating Temp. °C ±3 ±5 ±7.5 ±10 ±15 ±20 ±30 0° to +50° ü ü ü ü ü ü ü -10° to +60° ü ü ü ü ü ü ü -20° to +70° X ü ü ü ü ü ü -30° to +80° X X X ü ü ü ü -40° to +90° X X X X ü ü ü -55° to +105° X X X X X ü ü PART NUMBER GENERATION UM-1SMD crystals part numbers are derived as follows: OSCILLATION MODE & ESR Frequency (MHz) Crystal Cut Osc. Mode 1.0 ~ 1.2 4.0~4.9 5.0~5.9 6.0~6.9 7.0~7.9 8.0~9.9 10.0~10.99 11.0~12.9 13.0~45.0 30.0~50.0 50.1~100.0 80.0~200 SL 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 Example: ESR (max) (Ohms) 5000 150 120 100 70 80 60 40 25 40 50 70 16.000MHz UM-1SMD/10/20/10/30pF/ATF Frequency Package - UM-1SMD - UM5-SMD Calibration Tolerance at 25°C (in ±ppm) Temperature Stability (in ±ppm) Operating Temperature Range (lower figure of temperature range) Circuit Condition (CL in pF or SERIES) Mode - SLF (SL-Cut, fund.) - ATF (AT-Cut, fund.) - AT3 (AT-Cut, 3rd overtone) - AT5 (AT-Cut, 5th overtone) - AT7 (AT-Cut, 7th overtone) 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