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ECX-306

更新时间： 2024-11-11 06:55:55
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ECS 晶体
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SMD TUNING FORK CRYSTAL

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ECX-306 数据手册

  
ECX-306/306I 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  
ECX-306/306  
I
UNITS  
KHz  
pF  
NOMINAL FREQUENCY  
LOAD CAPACITANCE  
Fo  
CL  
32.768  
12.5 Standard (6.0 Optional)  
1 max.  
DRIVE LEVEL  
DL  
µW  
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  
@ 25˚C  
R1  
±20  
50 max.  
-0.040 PPM/˚C2 max.  
-10 ~ +60  
PPM  
KΩ  
PPM/(∆C˚)  
˚C  
TOPR  
-40 ~ +85  
50,000 min.  
+25 ± 5  
-55 ~ +125  
min./ DC 100V  
°C  
Q
TO  
TSTG  
IR  
°C  
°C  
MΩ  
pF  
500M  
Ω
Co  
1.35 typical  
MOTIONAL CAPACITANCE  
AGING (FIRST YEAR)  
C1  
∆f/fo  
0.003 pF typical  
±3 PPM max. @ +25˚C  
pF  
PPM  
PARABOLIC TEMPERATURE CURVE  
PACKAGE DIMENSIONS (mm)  
T (˚C)  
-20 -10  
0
10 20 30 40 50 60 70  
-10  
-20  
-30  
-40  
-50  
-60  
8.0 Max.  
8.7 Max.  
#4  
#3  
#3  
#2  
#4  
#1  
#4  
#3  
#2  
#4  
#1  
#3  
#2  
#1  
f/f (PPM)  
#1  
#2  
To determine frequency stability, use parabolic  
curvature. For example: What is the stability at 45˚C?  
5.5  
5.5  
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  
0.5  
0.5  
1.15  
0.5  
0.5  
RECOMMENDED OSCILLATION  
Figure 1) ECX-306 - Top, Side and End views  
with pin connections  
Figure 2) ECX-306  
I - Top, Side and End views  
CIRCUIT  
Rf  
with pin connections  
In this circuit, low  
drive level with a  
maximum of 1µW  
is recommended.  
If excessive drive  
is applied, irregu-  
lar oscillation or  
quartz element  
fractures may  
Rd  
C2  
C1  
occur.  
ELECTRICAL CHARACTERISTICS  
IC: TC 4069P, Rf: 10MΩ  
1.3  
1.3  
4.2  
Rd: 330KΩ (As required)  
C1 = 22pF, C2 = 22pF, VDD = 3.0V  
Figure 3) ECX-306/306 I Land Pattern - Top view  
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  
1

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