EURO QUARTZ HC49-4H and HC49-4HL Crystals 10.7 x 4.3mm Low-profile Leaded Crystal 3.2MHz to 70.0MHz Low-cost, industry-standard crystal unit AT-Cut strip crystal with hermetically sealed can Frequency range 1.0MHz to 70MHz Package height options available DESCRIPTION HC49-4H crystals share the same base outline as the industrystandard HC49 crystal. The crystal uses at AT-cut strip crystal with an hermetically sealed can. HC49-4H crystals provide a low cost source of system clock frequency. Part HC49-4HL has height 2.5mm. OUTLINE & DIMENSIONS SPECIFICATION Frequency Range: Oscillation Mode AT-Cut Fundamental: BT-Cut Fundamental: AT-Cut 3rd Overtone: Calibration Tolerance at 25ºC AT-Cut: BT-Cut: Frequency Stability AT-Cut: BT-Cut: Load Capacitance (CL): Ageing at 25°C: Drive Level: Storage Temperature Range: Crystal Holder: RoHS Status: Supply format: 3.2MHz to 70.0MHz 3.2MHz to 30.0MHz 24.0MHz to 48.0MHz 27.0MHz to 70.0MHz ±30ppm (tolerance to ±10ppm is available.) ±30ppm ±30ppm over -10° to +60°C (Stability to ±10ppm is available) ±100ppm pver -10 to +60°C Series or from 8pF to 32pF ±3ppm maximum, 1st year, ±1ppm per year thereafter. 100mWatts typ., 500mWatts max. -50° to +105°C Resistance-weld hermetic seal Compliant Bulk pack (Radial tape and reel is available) ESR & OSCILLATION MODE Frequency Range MHz Crystal Cut Osc. Mode 3.2 ~ 3.4 3.5 ~ 6.0 6.1 ~ 10.0 10.1 ~ 30.0 24.0 ~ 48.0 27.0 ~ 30.0 30.1 ~ 50.0 50.1 ~ 70.0 AT-Fund AT-Fund AT-Fund AT-Fund BT-Fund AT-3rd OT AT-3rd OT AT-3rd OT ESR Ω Max. 300 120 60 40 40 150 100 80 PART NUMBER GENERATION Part numbers for HC49-4H crystals are generated as follows: Example: 8.000MHz HC49-4H/30/50/-20+70/30pF/30R Frequency / holder /calibration tolerance /stability over op. temp. /op. temp. range / circuit condition /ESR or operating mode EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk