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PDF ECX-306I Data sheet ( Hoja de datos )
| Número de pieza | ECX-306I | |
| Descripción | SMD TUNING FORK CRYSTAL | |
| Fabricantes | ECS | |
| Logotipo |  |
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ECX-306/306Iwww.DataSheet4U.com
SMD TUNING FORK CRYSTAL
Housing for the ECX-306/306I crystal is
made from the same thermoplastic that
is industry standard for integrated cir-
cuits. This ruggedized molded package
is excellent for SMD applications.
FEATURES
• Low profile
• Long term stability
• Industry standard footprint
• Excellent shock resistance
• Excellent environmental characteristics
• Tape and Reel (3,000 pcs)
PART NUMBERING GUIDE “EXAMPLE”
FREQUENCY
LOAD CAPACITANCE
PACKAGE TYPE**
ECS
– .327
–
12.5 –
17
** Package Type examples (-17= ECX-306, 17I= ECX-306I)
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
NOMINAL FREQUENCY
LOAD CAPACITANCE
DRIVE LEVEL
CALIBRATION TOLERANCE
EQUIVALENT SERIES RESISTANCE
TEMPERATURE COEFFICIENT
OPERATING TEMPERATURE RANGE
MAX. OPERATING TEMPERATURE RANGE
Q FACTOR
TURNOVER TEMPERATURE
STORAGE TEMPERATURE RANGE
INSULATION RESISTANCE
SHUNT CAPACITANCE
MOTIONAL CAPACITANCE
AGING (FIRST YEAR)
Fo
CL
DL
@ 25˚C
R1
TOPR
Q
TO
TSTG
IR
Co
C1
∆f/fo
ECX-306/306I
32.768
12.5 Standard (6.0 Optional)
1 max.
±20
50 max.
-0.040 PPM/˚C2 max.
-10 ~ +60
-40 ~ +85
50,000 min.
+25 ± 5
-55 ~ +125
500MΩ min./ DC 100V
1.35 typical
0.003 pF typical
±3 PPM max. @ +25˚C
UNITS
KHz
pF
µW
PPM
KΩ
PPM/(∆C˚)
˚C
°C
°C
°C
MΩ
pF
pF
PPM
PACKAGE DIMENSIONS (mm)
8.0 Max.
#4 #3
#4
#3
#1
5.5
#2
#1
#2
0.5 0.5
(0.9 Typical)
Figure 1) ECX-306 - Top, Side and End views
with pin connections
8.7 Max.
#4 #3
#1 #2
5.5
#4
#1
#3
#2
0.5 0.5
1.15
Figure 2) ECX-306 I - Top, Side and End views
with pin connections
1.3 4.2 1.3
Figure 3) ECX-306/306 I Land Pattern - Top view
PARABOLIC TEMPERATURE CURVE
T (˚C) -20 -10 0 10 20 30 40 50 60 70
-10
-20
-30
-40
-50
-60
f/f (PPM)
To determine frequency stability, use parabolic
curvature. For example: What is the stability at 45˚C?
1) Change in T (˚C) = 45 -25 = 20˚C
2) Change in frequency = -0.04 PPM x (∆T)2
= -0.04 PPM x (20)2
= -16.0 PPM
RECOMMENDED OSCILLATION
CIRCUIT
Rf
In this circuit, low
drive level with a
maximum of 1µW
Rd is recommended.
If excessive drive
is applied, irregu-
lar oscillation or
C1 C2 quartz element
fractures may
occur.
ELECTRICAL CHARACTERISTICS
IC: TC 4069P, Rf: 10MΩ
Rd: 330KΩ (As required)
C1 = 22pF, C2 = 22pF, VDD = 3.0V
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
SMD CRYSTALS 13 SMD CRYSTALS
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