THROUGH-HOLE CRYSTALS
HC35 CRYSTALS (TO5)
DESCRIPTION
HC35 crystals are used in communications, aerospace and defence
applications The crystal blank used in HC35 packages is capable of being
manufactured to close tolerances and is readily produced with custom
frequencies and specifications.
OUTLINES AND DIMENSIONS
FEATURES
Wide frequency range
Small profile, low-mass package
Close tolerances easily achieved
Fully customisable specification
Industry-standard package
GENERAL SPECIFICATION
Frequency Range:
Oscillation Mode:
Calibration Tolerance at 25ºC:
Frequency stability over temp:
Operating Temperature Range:
Shunt Capacitance (C0):
Load Capacitance (CL):
Motional Capacitance (C1):
Effective Series Resistance:
Ageing:
Drive level:
Shock:
Vibration:
Holder:
Supply format:
8.0MHz to 250MHz
See table
from ±3ppm
from ±3ppm (see table)
From 0°~+50° to -55°~+125°C
4pF maximum (See table)
Series or from 8pF to 32pF
(Customer specified CL)
See table
See table
±2ppm max 1st year,
±1ppm typical per year after
100uW maximum
100g/6ms
10g/1.5mm, 10~500Hz, 3 axis
Resistance-weld, hermetic seal
Bulk pack
FREQUENCY STABILITY OVER TEMPERATURE
Operating
Temp. °C
0° to +50°
-10° to +60°
-20° to +70°
-30° to +80°
-40° to +90°
-55° to +105°
-55° to +125°
Temperature Stability (ppm)
±3
ü
ü
X
X
X
X
X
±5
ü
ü
ü
X
X
X
X
±7
ü
ü
ü
X
X
X
X
±10 ±20 ±25 ±30 ±50
ü
ü
ü
ü
ü
X
X
ü
ü
ü
ü
ü
X
X
ü
ü
ü
ü
ü
ü
X
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
OSCILLATION MODE, ESR & SHUNT CAPACITANCE
Frequency
(MHz)
8.0~9.9
10.0~10.99
11.0~12.9
13.0~45.0
30.0~50.0
50.1~100.0
80.0~200
150~250
Crystal Cut
Osc. Mode
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT 3rd OT
AT 5th OT
AT 7th OT
AT 9th OT
ESR (max)
(Ohms)
80
60
40
25
40
50
70
120
C0
(pF)
2.5
3.0
4.0
4.0
4.0
4.0
4.0
4.0
PART NUMBER GENERATION
HC35 crystal part numbers are derived as follows:
Example:
16.000MHz HC35/10/20/10/30pF/ATF
MOTIONAL CAPACITANCE (C1)
Frequency
Package = HC35
Calibration Tolerance at 25°C ±ppm
Temperature Stability ±ppm
Operating Temperature Range
lower figure of temp. range
e.g. ‘10’ = -10°~+60°C
‘20’ = -20°~+70°C
Circuit Condition
(CL in pF or SERIES)
Mode
- ATF (AT-Cut, Fundamental)
- AT3 (AT-Cut, 3rd overtone)
- AT5 (AT-Cut, 5th overtone)
- AT7 (AT-Cut, 7th overtone)
- AT9 (AT-Cut, 9th overtone)
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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