HC49-4H EUROQUARTZ | Alldatasheet
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Technical content
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE HC49-4H and HC49-4HL Crystals Low-cost, industry-standard crystal unit AT-Cut strip crystal with hermetically sealed can Frequency range 1.0MHz to 70MHz Package height options available Frequency Range: 3.2MHz to 70.0MHz Oscillation Mode AT-Cut Fundamental: 3.2MHz to 30.0MHz BT-Cut Fundamental: 24.0MHz to 48.0MHz AT-Cut 3rd Overtone: 27.0MHz to 70.0MHz Calibration Tolerance at 25ºC AT-Cut: ±30ppm (tolerance to ±10ppm is available.) BT-Cut: ±30ppm Frequency Stability AT-Cut: ±30ppm over -10° to +60°C (Stability to ±10ppm is available) BT-Cut: ±100ppm pver -10 to +60°C Load Capacitance (CL): Series or from 8pF to 32pF Ageing at 25°C: ±3ppm maximum, 1st year, ±1ppm per year thereafter. Drive Level: 100 mWatts typ., 500mWatts max. Storage Temperature Range: -50° to +105°C Crystal Holder: Resistance-weld hermetic seal RoHS Status: Compliant Supply format: Bulk pack (Radial tape and reel is available) SPECIFICATION
DESCRIPTION
HC49-4H crystals share the same base outline as the industry- standard 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 NUMBER GENERATION Part numbers for HC49-4H crystals are generated as follows: 8.000MHz HC49-4H/30/50/-20+70/30pF/30R Example: Frequency / holder /calibration tolerance /stability over op. temp. /op. temp. range / circuit condition /ESR or operating mode 3.2 ~ 3.4 AT-Fund 300 3.5 ~ 6.0 AT-Fund 120 6.1 ~ 10.0 AT-Fund 60 10.1 ~ 30.0 AT-Fund 40 24.0 ~ 48.0 BT-Fund 40 27.0 ~ 30.0 AT-3rd OT 150 30.1 ~ 50.0 AT-3rd OT 100 50.1 ~ 70.0 AT-3rd OT 80 Frequency Range MHz Crystal Cut Osc. Mode ESR Ohms Max. ESR and OSCILLATION MODE