Data Sheet

EURO QUARTZ
HIGH TEMPERATURE CRYSTALS
High Temperature/High Frequency
FEATURES
6 MHz to 250MHz
CX9HT
CX4HT
CX1HT
High temperature operation up to 200°C
High schock resistance
Hermetically sealed ceramic package
8MHz ~ 250MHz
14MHz ~ 250MHz
14MHz ~ 250MHz
DESCRIPTION
The 'HT' range of crystals are designed for applications subjected to
high operating temperatures. The CX1HT, CX4HT and CX9HT crystals
operate up to 200°C and feature an expected life in excess of 1000
hours at these temperatures. The frequency range is:
CX1HT: 8.0MHz to 250MHz
CX4VHT: 14MHz to 250MHz
CX9VHT: 14MHz to 250MHz.
DIMENSIONS
APPLICATIONS
Downhole instrumentation
Rotary shaft sensors
Underground boring tools
Dim.
A
B
C (SM1)
C (SM5)
D
E
F
CX1HT
CX4HT
CX9HT
8.38
3.94
1.78
1.90
1.40
1.78
1.78
5.33
2.16
1.27
1.35
1.16
0.51
0.64
4.32
1.73
0.97
1.02
0.97
OUTLINES & DIMENSIONS
Suggested Soldering pattern
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
EURO QUARTZ
HIGH TEMPERATURE CRYSTALS
High Temperature/High Frequency
SPECIFICATION
6 MHz to 250MHz
CRYSTAL EQUIVALENT CIRCUIT
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Frequency Range:
Calibration Tolerance1:
Operating Temperature Range:
Temperature Stability2:
See specifications table below
±100ppm or tighter as required
-55° to +200°C
±150ppm -55° to +150°C
±175ppm -55°C to +175°C
±200ppm -55° to +200°C
±5ppm @25°C
Ageing First Year:
Shock, Survival3:
CX1HT:
CX4HT:
CX9HT:
Vibration, Survival3:
1,000g, 1ms, ½ sine
5,000g, 0.3ms, ½ sine
5,000g, 0.3ms, ½ sine
20g rms, 10~2000Hz
R1 Motional Resistance
C1 Motional Capacitance
L1 Motional Inductance
C0 Shunt Capacitance
PACKAGING OPTIONS
CX_HT crystals are available either tray packed (<250pcs) or tape and
reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
1. Tighter frequency calibration available. Contact Euroquartz sales.
2. Does not include calibration tolerance. The characteristics of
frequency stability over temperature follow that of the thicknessshear mode.
3. Higher shock and vibration available.
CONVENTIONAL CMOS PIERCE OSCILLATOR CIRCUIT
ABSOLUTE MAXIMUM RATINGS
Storage Temperature:
Maximum Process Temperature:
-55° to +200°C
260°C for 20 seconds
SPECIFICATIONS TABLE
Frequency
Range
Motional
Resistance
R1 @ 25°C
Motional
Capacitance
C1 @ 25°C
Shunt
Capacitance
C0 @ 25°C
Quality Factor
Q @ 25°C
Load Capacitance
CL
Drive Level
5.5fF @ 10.0MHz
6.2fF @ 32.0MHz
2.2pF @ 10.0MHz
2.3pF @ 32.0MHz
100k @ 10.0MHz
30k @ 32.0MHz
20pF for f <50MHz
10pF for f >50MHz
500µW max. for f <50MHz
200µW max. for f >50MHz
CX1HT
8.0MHz to
250MHz
30Ω @ 10MHz
25Ω @ 32MHz
CX4HT
14.0MHz to
250MHz
75Ω @ 10MHz
30Ω @ 32MHz
1.5fF @ 10.0MHz
2.5fF @ 32.0MHz
0.9pF @ 10.0MHz
1.1pF @ 32.0MHz
90k @ 10.0MHz
70k @ 32.0MHz
10pF
200µW max. for f <50MHz
100µW max. for f >50MHz
14.0MHz to
250MHz
30Ω @ 10MHz
30Ω @ 32MHz
1.8fF @ 10.0MHz
2.1fF @ 32.0MHz
1.0pF @ 10.0MHz
1.0pF @ 32.0MHz
120k @ 10.0MHz
60k @ 32.0MHz
10pF
200µW max. for f <50MHz
100µW max. for f >50MHz
CX9HT
HOW TO ORDER CX1HT, CX4HT and CX9HT CRYSTALS
CX4HT - S
CX1HT
CX4HT
CX9HT
-
'S' if special,
custom design.
Otherwise leave
blank
SM1
-
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
20.0M
–
Frequency
M = MHz
Calibration
Tolerance
@25°C
(in ppm)
/
–
Frequency
Stability
over Temp.
Range
(in ppm)
/ 200
Total
Frequency
Tolerance
(in ppm)
/
H
Temp. Range
H = 25° to 200°C
S = Customer specified
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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