Data Sheet

EURO QUARTZ
CX3HSM CRYSTAL
Miniature SMD Crystal for Series Oscillators
18kHz to 600kHz
FEATURES
Frequency Range 18kHz to 600kHz
High shock resistance
Low ageing
Designed for low power applications
Full MIL testing available
OUTLINE & DIMENSIONS
DESCRIPTION
CX3HSM crystals consist of a high quality tuning fork resonator in a
rugged, hermetically sealed ceramic package. CX3HSM crystals are
intended for use in Series (two cascaded inverters) oscillator circuits.
SPECIFICATION
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Frequency Range:
18.0kHz to 600.0kHz
Standard Calibration Tolerance1: see table
Motional Resistance (R1):
Figure 1
Max = 18~25kHz, 2 x typical
25~600kHz, 2.5x typical
Motional Capacitance (C1):
Figure 2
Quality Factor (Q):
Figure 3
Min. is 0.25x typical
Shunt Capacitance (C0):
1.8pF max.
Drive Level
18~24.9kHz:
1.5µW max.
25~600.0kHz: 3.0µW max.
Turning Point (T0)2:
Figure 4
Temperature Coefficient (k):
-0.035ppm/°C2
Ageing, first year:
5ppm max.
Shock, survival3: 1,500g, 0.3ms, ½ sine
Vibration, survival3:
10g rms, 20~2000Hz
Operating Temperature Range
Commercial:
-10° to +70°C
Industrial:
-40° to +85°C
Military:
-55 to +125°C
Storage Temperature Range:
-55° to +125°C
Maximum Process Temperature:
+260°C for 20 seconds
1.
2.
3.
Tighter frequency calibration is available.
Other turning point is available
Higher shock and vibration survival is available
Dim. H
Glass
Lid
Ceramic
Lid
SM1
SM2
SM3
SM4
SM5
1.35
1.40
1.47
1.40
1.47
1.70
1.75
1.83
1.75
1.83
STANDARD CALIBRATION TOLERANCE
Frequency Range (kHz)
PACKAGING OPTIONS
CX3HSM crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
18~74.9
75~169.9
±30ppm
(0.003%)
±100ppm
(0.01%)
±1000ppm
(0.1%)
±50ppm
(0.005%)
±100ppm
(0.01%)
±1000ppm
(0.1%)
170~249.9
±100ppm
(0.01%)
±200ppm
(0.02%)
±2000ppm
(0.2%)
250~600
±200ppm
(0.02%)
±500ppm
(0.05%)
±5000ppm
(0.5%)
HOW TO ORDER CX3HSM CRYSTALS
CX3H - S
'S' if special,
custom design.
Otherwise leave
blank
-
C
Blank = glass lid
C = ceramic lid
-
SM1
-
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
32.0K,
Frequency
K = kHz
30
/
Calibration
Tolerance
@25°C
(in ppm)
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°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
EURO QUARTZ
CX3HSM CRYSTAL
Miniature SMD Crystal for Series Oscillators
CRYSTAL EQUIVALENT CIRCUIT
R1 Motional Resistance
C1 Motional Capacitance
18kHz to 600kHz
FIGURE 1
CX3H Typical Motional Resistance R1
L1 Motional Inductance
C0 Shunt Capacitance
CONVENTIONAL SERIES OSCILLATOR CIRCUIT
FIGURE 2
CX3H Typical Motional Capacitance C1
FIGURE 3
CX3H Typical Quality Factor (Q)
FIGURE 4
CX3H Typical Turning Point Temperature (To)
Turning Point Temperature
Note: Frequency f at temperature T is related to frequency F0 at
turning point temperature To by:
f-fo
=k(T-To)2
fo
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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