HC49-4H Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – SURFACE MOUNT QUARTZ CRYSTALS

EURO QUARTZ
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
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.
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 and OSCILLATION MODE
Frequency
Range MHz
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
Crystal Cut
ESR
Osc. Mode Ohms Max.
AT-Fund
300
AT-Fund
120
AT-Fund
60
AT-Fund
40
BT-Fund
40
AT-3rd OT
150
AT-3rd OT
100
AT-3rd OT
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: [phone] Fax: [phone] [e-mail] www.euroquartz.co.uk