THROUGH-HOLE CRYSTALS
HC51 SERIES CRYSTALS
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
FEATURES
·
•
•
•
•
Low frequencies with low ESR values.
Available with close tolerances
Fully customisable specification
Industry-standard package with options
Wide frequency range
GENERAL SPECIFICATION
Frequency Range:
Calibration Tolerance at 25ºC:
Frequency stability over temp:
Load Capacitance:
Ageing:
Drive level:
Static capacitance (C0):
Holder:
Part Numbers for Holder Variants *
Holder Type
Standard 2 lead:
‘Plug-in’ for use in socket:
Holder Designation
HC51
HC48
100kHz to 70MHz
from ±10ppm to ±100ppm
from ±10ppm to ±100ppm
8pF to 50pF, or Series
±3ppm max 1st year,
±1ppm max per year after
1mW max
9pF max
Resistance-weld, hermetic seal
FREQUENCY STABILITY OVER TEMPERATURE
Operating
Temp. °C
0° to +50°
-10° to +60°
-20° to +70°
Temperature Stability (ppm)
±3
X
X
X
X
X
X
±5
X
X
X
X
X
X
±7.5
ü
X
X
X
X
X
±10
ü
X
X
X
X
X
±15
ü
ü
X
X
X
X
±20
ü
ü
ü
ü
X
X
±30
ü
ü
ü
ü
ü
ü
OSCILLATION MODE & ESR
Frequency
(MHz)
100kHz~890kHz
890kHz~1.8432
1.8432~2.5
2.5~3.5
3.5~7.0
7.0~12.0
12.0~24.0
9.0~ 30.0
15.0~70.0
Crystal Cut/
ESR (max)
Oscillation Mode
(Ohms)
SL Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund
AT Fund.
AT Fund.
AT 3rd OT
AT 5th OT
3000
800
350
200
100
40
20
20
20
-30° to +80°
-40° to +90°
-55° to +105°
ü
Indicates this stability is available over the stated operating temp. range
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.
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
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
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