HIGH TEMPERATURE CRYSTALS
High Temperature/Low Frequency
DESCRIPTION
An increasing number of applications require the use of
high-temperature crystals. For these applications, Statek
offers the CX1VHT/CX1HHT, CX4VHT, and CX9VHT
crystals. These crystals are designed to operate at
temperatures up to and including 200ºC, and feature an
expected life in excess of 1,000 hours at these
temperatures. The frequency range offered is 10 kHz to
600 kHz for CX1VHT and CX1HHT crystals, 30 kHz to
250 kHz for CX4VHT crystals, and 32 kHz to 160 kHz for
CX9VHT crystals.
FEATURES
CX1VHT/
CX1HHT
10 kHz - 600 kHz
CX4VHT
30 kHz - 250 kHz
CX9VHT
32 kHz - 160 kHz
High temperature operation up to 200
O
C
High shock resistance
Hermetically sealed ceramic package
APPLICATIONS
DIMENSIONS
CX1VHT/
CX1HHT
MAXIMUM
DIM
A
B
C
(SM1)
C
(SM5)
D
E
F
inches
0.330
0.155
0.070
0.075
0.055
0.070
0.070
mm
8.38
3.94
1.78
1.90
1.40
1.78
1.78
CX4VHT
MAXIMUM
inches
0.210
0.085
0.050
0.053
0.046
0.020
0.025
mm
5.33
2.16
1.27
1.35
1.16
0.51
0.64
CX9VHT
MAXIMUM
inches
0.170
0.068
0.038
0.040
0.038
mm
4.32
1.73
0.97
1.02
0.97
Industrial
Downhole instrumentation
Rotary shaft sensors
Underground boring tools
PACKAGE DIMENSIONS
CX1VHT/
CX1HHT
CX4VHT
CX9VHT
SUGGESTED LAND PATTERN
CX1VHT/
CX1HHT
CX4VHT
CX9VHT
10183 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Specifications are typical at 25
O
C unless otherwise noted.
Specifications are subject to change without notice.
Frequency Range
Calibration Tolerance
1
See Specifications Table below
See Standard Calibration
Tolerance Table at right
O
O
Storage Temperature
Maximum Process Temperature
-55
O
C to 125
O
C
260
O
C for 20 seconds
Standard Calibration T
olerances at 25
o
C
Frequency Range (kHz)
10-74.9
±30 ppm
±100 ppm
±1000 ppm
75-169.9
±50 ppm
±100 ppm
±1000 ppm
170-249.9
±100 ppm
±200 ppm
±2000 ppm
250-600
±200 ppm
±500 ppm
±5000 ppm
Operating Temperature Range -55 C up to +200 C
Frequency Stability
Over Temperature
2
Temperature Coefficient (k)
Aging, first year
Shock, survival
3
f(T) - f(To)
f(To)
= k(T-To)
2
-0.035 ppm/
O
C²
5 ppm at 25 C
O
CX1VHT: 1,000 g, 1 ms,
1
/
2
sine
CX1HHT: 1,000 g, 1 ms,
1
/
2
sine
CX4VHT: 5,000 g, 0.3 ms,
1
/
2
sine
CX9VHT: 5,000 g, 0.3 ms,
1
/
2
sine
20 g RMS, 10-2,000 Hz
FREQUENCY SHIFT VS. TIME
1
Frequency shift after:
Temp.
150°C
175°C
200°C
1,008 hours 1,824 hours
1.97 ppm
4.80 ppm
29.40 ppm
2.51 ppm
5.66 ppm
36.82 ppm
4,320 hours
2
3.30 ppm
6.94 ppm
47.61 ppm
8,760 hours
2
3.94 ppm
7.99 ppm
56.46 ppm
(Actual Data) (Actual Data) (Projected Data) (Projected Data)
Vibration, survival
3
1. Tighter frequency calibration available. Contact factory.
2. Where f(T) = Frequency at temperature T
T = Temperature
To = Turnover temperature
fo = Frequency at turnover temperature To
3. Higher shock and vibration available.
PACKAGING OPTIONS
• Tray Pack
• 7” or 13” reels
Per EIA 481 (see Tape and Reel data sheet # 10109)
1. The data listed in this table is for a 32.768 kHz CX4 Statek crystal.
2. The data shown for 4,320 hours and 8,760 hours is data that has been projected
using a curve-fitting method.
SPECIFICATIONS TABLE
1
(Specifications shown are typical unless otherwise noted.)
Typical Motional
Typical for 32.768 kHz at 25 oC
Product
1
Frequency Range
Motional
Motional
Resistance Capacitance
R1
C1
CX1VHT
CX4VHT
CX9VHT
10 kHz to 600 kHz
30 kHz to 250 kHz
32 kHz to 160 kHz
40 k
Ω
70 k
Ω
100 k
Ω
2.3 fF
2.3 fF
2.2 fF
Quality Factor
Shunt
Load
Turnover
150 oC
R1
55 k
Ω
100 k
Ω
125 k
Ω
200 oC
R1
73 k
Ω
125 k
Ω
160 k
Ω
0.5 µW MAX. 10-24.9 kHz
0.5 µW MAX.
0.5 µW MAX.
Resistance at
Drive Level
Capacitance Capacitance Temperature
C0
CL
2
To
1.7 pF
1.1 pF
1.0 pF
9 pF
26
°C
23
°C
22
°C
53 k
31 k
22 k
1. CX1HHT available from 10 kHz to 600 kHz.
2. Other load capacitance available.
HOW TO ORDER CX1VHT, CX1HHT, CX4VHT and CX9VHT CRYSTALS
CX4V
CX1V
CX1H
CX4V
CX9V
HT
HT = High
Temperature
S
“S” if special or
custom design.
Blank if Std.
SM5
Terminations*
SM1 = Gold Plated
SM5 = Solder Dipped
(Lead Free)
32.786K,
Frequency
K = kHz
100
Calibration
Tolerance
@ 25
0
C
(in ppm)
/
H
Temp. Range:
H = 0
0
C to 200
0
C
S = Customer
Specified Temp.
Range
*Special terminations per customer requirements will be considered. Contact factory.
10183 Rev C
STATEK CORPORATION 512 N. MAIN ST., ORANGE, CA 92868 714-639-7810 FAX: 714-997-1256
www.statek.com
Sensor
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