EURO
QUARTZ
FEATURES
High temperature operation up to 200°C
High schock resistance
Hermetically sealed ceramic package
HIGH TEMPERATURE CRYSTALS
10kHz to 600kHz
CX1VHT/
CX1HHT
CX4VHT
CX9VHT
High Temperature/Low Frequency
10kHz ~ 600kHz
30kHz ~ 250kHz
32kHz ~ 160kHz
DESCRIPTION
The 'HT' range of crystals are designed for applications subjected to
high operating temperatures. The CX1VHT/CX1HHT, CX4VHT and
CX9VHT crystals operate up to 200°C and feature an expected life in
excess of 1000 hours at these temperatures. The frequency range is:
CX1VHT and CX1HHT: 10kHz to 600kHz
CX4VHT: 30kHz to 250kHz
CX9VHT: 32kHz to 160kHz.
DIMENSIONS
APPLICATIONS
Downhole instrumentation
Rotary shaft sensors
Underground boring tools
Dim.
A
B
C (SM1)
C (SM5)
D
E
F
CX1VHT/
CX1HHT
8.38
3.94
1.78
1.90
1.40
1.78
1.78
CX4VHT
5.33
2.16
1.27
1.35
1.16
0.51
0.64
CX9VHT
4.32
1.73
0.97
1.02
0.97
OUTLINES & DIMENSIONS
Suggested Soldering pattern
SPECIFICATIONS TABLE
Frequency
Range
CX1VHT
CX1HHT
CX4VHT
CX9VHT
10kHz to
600kHz
10kHz to
600kHz
30kHz to
250kHz
32kHz to
160kHz
Motional
Resistance
R1 @ 25°C
30kΩ @ 32.768kHz
10kΩ @ 100kHz
140kΩ @ 32.768kHz
47kΩ @ 100kHz
50kΩ @ 32.768kHz
18kΩ @ 100kHz
70kΩ @ 32.768kHz
19kΩ @ 100kHz
Motional
Capacitance
C1 @ 25°C
2.3fF @ 32.768kHz
1.0fF @ 100kHz
2.3fF @ 32.768kHz
1.0fF @ 100kHz
2.3fF @ 32.768kHz
1.0fF @ 100kHz
2.3fF @ 32.768kHz
1.0fF @ 100kHz
Shunt Capacitance
C0 @ 25°C
Quality Factor
Q @ 25°C
68k @ 32.768kHz
140k @ 100kHz
18k @ 32.768kHz
31k @ 100kHz
40k @ 32.768kHz
85k @ 100kHz
27k @ 32.768kHz
80k @ 100kHz
Load
Capacitance
CL
9pF @ 32.768kHz
8pF @ 100kHz
9pF
9pF @ 32.768kHz
8pF @ 100kHz
9pF @ 32.768kHz
5pF @ 100kHz
Turnover
Temperature
21°C @ 32.768kHz
9°C @ 100kHz
21°C @ 32.768kHz
10°C @ 100kHz
25°C @ 32.768kHz
10°C @ 100kHz
20°C @ 32.768kHz
16°C @ 100kHz
Drive Level
2.0pF max.
2.0pF max.
2.3pF @ 32.768kHz
1.07pF @ 100kHz
2.2pF @ 32.768kHz
0.84pF @ 100kHz
0.5µW max. 10~24.9kHz
1.0µW max. 25~600kHz
0.5µW max. 10~24.9kHz
1.0µW max. 25~600kHz
0.5µW max.
0.5µW max.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
EURO
QUARTZ
HIGH TEMPERATURE CRYSTALS
10kHz to 600kHz
High Temperature/Low Frequency
GENERAL SPECIFICATION
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Frequency Range:
see
specifications table
Calibration Tolerance*:
see table
Operating Temperature Range:
-55°C to +200°C
Frequency Stability
f(T)-f(To)
over Temperature**:
=k(T-To)
2
f(To)
Temperature Coefficient (k):
-0.035ppm/°C
2
Ageing, first year:
5ppm max.
Shock, survival***:
CX1VHT:
1,000g, 1ms, ½ sine
CX1HHT:
1,000g, 1ms, ½ sine
CX4VHT:
5,000g, 0.3ms, ½ sine
CX9VHT:
5,000g, 0.3ms, ½ sine
Vibration, survival:
20g rms, 10~2000Hz
*
**
Tighter frequency calibration is available.
Where f(T) = frequency at temperature T
T = Temperature
To = Turnover temperature
fo = frequency at turnover temperature To
*** Higher shock and vibration survival is available
STANDARD CALIBRATION TOLERANCE
Frequency Range (kHz)
10~74.9
75~169.9
170~249.9
±100ppm
±200ppm
±2000ppm
250~600
±200ppm
±500ppm
±5000ppm
±30ppm
±50ppm
±100ppm ±100ppm
±1000ppm ±1000ppm
FREQUENCY SHIFT vs. TIME
Epoxy
Type
Frequency shift after:
Temp.
1,008 hrs
1,824 hrs
4,320 hrs
8,760 hrs
(Actual Data) (Actual Data) (Projected Data) (Projected Data)
1.97ppm
3.94ppm
4.80ppm
4.13ppm
29.40ppm
23.31ppm
2.51ppm
4.91ppm
5.66ppm
5.06ppm
36.82ppm
30.59ppm
3.30ppm
6.32ppm
6.94ppm
6.41ppm
47.61ppm
41.63ppm
3.94ppm
7.46ppm
7.99ppm
7.52ppm
56.46ppm
50.89ppm
Epoxy
Epoxy
Epoxy
Epoxy
Epoxy
Epoxy
A
B
A
B
A
B
150°C
150°C
175°C
175°C
200°C
200°C
PACKAGING OPTIONS
Tray packed (<250pcs) or tape and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
HOW TO ORDER CX1VHT, CX1HHT, CX4VHT and CX9VHT CRYSTALS
CX4V - HT
CX1V
CX1H
CX4V
CX9V
HT = High
Temperature
-
S
'S' if special,
custom design.
Otherwise leave
blank
-
SM5
-
32.768K, 30
Frequency
K = kHz
/
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
Terminations
SM1 = Gold plated
SM5 = Solder Dipped
Lead free
Calibration
Tolerance
@25°C
(in ppm)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk
