EURO
QUARTZ
Low Profile Miniature SMD Crystal
FEATURES
Extensional mode resonator, 760kHz to 1.35MHz
Designed for low power applications
Ideal microprocessor clock crystal
Low ageing
Full military testing available
CX2SM CRYSTAL
760kHz to 1.35MHz
DESCRIPTION
CX2SM crystals consist of a high quality extensional mode resonator
in a rugged, hermetically sealed ceramic package.
OUTLINE & DIMENSIONS
Dim.
A
B
C
D
E
F
G
H
I
Typ.
Max.
SPECIFICATION
Specifications stated are typical at 25°C unless otherwise indicated.
Specifications may change without notice.
Frequency Range:
760.0kHz to 1.35MHz
Standard Calibration Tolerance*: ±500ppm (0.05%)
±1000ppm (0.1%)
±10000ppm (1.0%)
Load Capacitance:
7pF
Motional Resistance (R1):
5kΩ maximum
Motional Capacitance (C1):
1.2fF
Quality Factor (Q):
150k
Shunt Capacitance (C0):
1.0pF
Drive Level:
3µW maximum
Turning Point (T0**):
35°C
Temperature Coefficient (k):
-0.035ppm/°C
2
Ageing First Year:
±5ppm maximum
Shock, Survival:
1000g, 0.3ms, ½ sine
Vibration, Survival:
10g rms, 20~1000Hz random
Operating Temperature Range:
-10°C to +70°C (Commercial)
-40°C to +85°C (Industrial)
-55°C to +125°C (Military)
Storage Temperature Range:
-55° to +125°C
Maximum Process Temperature:
+260°C for 20 seconds
*
**
Tighter frequency calibration is available.
Other turning point is available.
6.60
6.99
2.39
2.74
see below
0.89
1.14
1.50
1.75
1.27
1.52
2.67
2.92
3.94
4.19
5.33
5.59
Dim. C
SM1
SM2
SM3
SM4
SM5
Glass
Lid
1.65
1.70
1.78
1.70
1.78
Ceramic
Lid
1.91
1.96
2.03
1.96
2.03
PACKAGING OPTIONS
CX2SM crystals are available either tray packed (<250pcs) or tape
and reel (>250 pieces).
16mm tape, 178mm or 330mm reels (EIA 418).
Turning Point Temperature
Note: Frequency f at temperature T is related to frequency Fo at
turning point temperature To by:
f-fo
=k(T-To)
2
fo
HOW TO ORDER CX2SM CRYSTALS
CX2 -
S
-
C
Blank = glass lid
C = ceramic lid
-
SM1
-
1.0M
Frequency
K = kHz
M = MHz
, 500
Calibration
Tolerance
@25°C
(in ppm)
/
I
Temp. Range
C = -10° ~ +70°C
I = -40° ~ +85°C
M = -55° ~ +125°C
S = Customer specified
'S' if special,
custom design.
Otherwise leave
blank
Terminations
SM1 = Gold plated *
SM2 = Solder plated
SM3 = Solder dipped
SM4 = Solder plated *
SM5 = Solder dipped *
* = Lead free
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
EUROQUARTZ [ EUROQUARTZ LIMITED ]
