EURO
QUARTZ
Ultra-Miniature SMD Crystal
FEATURES
Frequency Range 80kHz to 160kHz
High shock resistance
Ultra-small ceramic package
Low ageing
Designed for low power applications
Full MIL testing available
CX7VSM CRYSTAL
80kHz to 160kHz
OUTLINE & DIMENSIONS
DESCRIPTION
CX7VSM crystals are leadless devices designed for surface mounting
on PCBs or hybrid substrates. The crystals are intended for use in
Pierce (single inverter) oscillator circuits.
SPECIFICATION
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Parameters
Frequency (kHz):
Motional Resistance R1 (kΩ):
Motional Capacitance C1 (fF):
QualityFactor Q (k):
Load Capacitance (pF)
1
:
Turning Point (°C)
2
:
Fundamental
100.0
19
1.0
86
5
10
153.6
11
0.8
110
5
5
Dim. H
SM1
SM2
SM3
Glass
Lid
1.14
1.17
1.22
Ceramic
Lid
1.27
1.30
1.35
TERMINATIONS - PLATING
Designation
C = ±1000ppm
(0.1%)
C = ±10000ppm
(1.0%)
Standard Calibration Tolerance for 32.768kHz (3)
Glass Lid:
Ceramic Lid:
A = ±50ppm
(0.003%)
A = ±100ppm
(0.01%)
B = ±100ppm
(0.01%)
B = ±1000ppm
(0.1%)
Termination
SM1
SM2
SM3
Gold Plated
Nickel, Solder Plated
Nickel, Solder Plated and Solder Dipped
Drive Level:
Temperature Coefficient (k):
Ageing, first year:
0.5µW max.
-0.035ppm/°C
2
5ppm max.
Conventional CMOS Pierce Oscillator Circuit
Note: Frequency f at temperature T is related to frequency Fo at
turning point temperature To by:
f-fo
=k(T-To)
2
fo
Shock, survival:
Vibration, survival:
Operating Temperature Range
Commercial:
Industrial:
Military:
Storage Temperature Range:
Maximum Process Temperature:
1.
2.
3.
5000g, 0.3ms, ½ sine
20g rms, 10~2000Hz random
-10° to +70°C
-40° to +85°C
-55 to +125°C
-55° to +125°C
+260°C for 20 seconds
Other load capacitance values are available.
Other temperature available.
Thighter tolerances available.
PACKAGING OPTIONS
CX7VSM crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
HOW TO ORDER CX7VSM CRYSTALS
CX7V - S
'S' if special,
custom design.
Otherwise leave
blank
-
C
Blank = glass lid
C = ceramic lid
-
SM1
-
100.0K,
Frequency
K = kHz
A
Calibration
Tolerance*
A
B
C
/
I
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
* If other calibration required enter 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
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