EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
THROUGH-HOLE CRYSTALS
Frequency Range:
100kHz to 70MHz
Calibration Tolerance at 25C:
from ±10ppm to ±100ppm
Frequency stability over temp:
from ±10ppm to ±100ppm
Load Capacitance:
8pF to 50pF, or Series
Ageing:
±3ppm max 1st year,
±1ppm max per year after
Drive level:
1mW max
Static capacitance (C0):
9pF max
Holder:
Resistance-weld, hermetic seal
Part Numbers for Holder Variants *
Holder Type
Holder Designation
Standard 2 lead:
HC51
‘Plug-in’ for use in socket:
HC48
Low frequencies with low ESR values.
Available with close tolerances
Fully customisable specification
Industry-standard package with options
Wide frequency range
HC51 SERIES CRYSTALS
FEATURES
GENERAL SPECIFICATION
DESCRIPTION
HC51 crystals are long-established standard crystals in the industry. Basic
specification HC51 crystals provide low frequencies at relatively low cost
and have the advantage of low ESR values. A holder variant is the HC48
which has larger diameter leads specifically for socket mounting.
OUTLINES & DIMENSIONS
Frequency
(MHz)
Crystal Cut/
Oscillation Mode
ESR (max)
(Ohms)
OSCILLATION MODE & ESR
100kHz~890kHz SL Fund.
3000
890kHz~1.8432
AT Fund.
800
1.8432~2.5
AT Fund.
350
2.5~3.5
AT Fund.
200
3.5~7.0
AT Fund
100
7.0~12.0
AT Fund.
40
12.0~24.0
AT Fund.
20
9.0~ 30.0
AT 3rd OT
20
15.0~70.0
AT 5th OT
20
Operating
Temp. °C
Temperature Stability (ppm)
±3
FREQUENCY STABILITY OVER TEMPERATURE
±5
±7.5
±10
±15
±20
±30
0° to +50°
X
ü
-10° to +60°
X
ü
-20° to +70°
X
ü
-30° to +80°
X
ü
-40° to +90°
X
ü
-55° to +105°
X
ü
ü Indicates this stability is available over the stated operating temp. range
PART NUMBER GENERATION
HC51 crystal part numbers are derived as follows:
Example:
1.000MHz HC51/50/100/10/30pF/ATF
Frequency
Holder (HC51 or HC48)
Calibration Tolerance (±ppm)
Temperature Stability (±ppm)
Temperature Range (±ppm)
Circuit Condition
Crystal Cut and Mode
CUSTOM PRODUCTION
Euroquartz maintain stocks of certain frequency and specificationHC51
and HC48 crystals. Custom parts are manufactured to order on short
lead times. Contact Euroquartz technical sales with your requirement.