ECX-3TAX Datasheet, PDF (1/1 Pages) ECS, Inc. – MICRO MINIATURE SMD TUNING FORK CRYSTAL

ECX-3TAX MICRO MINIATURE SMD TUNING FORK CRYSTAL
The ECX-3TAX is a 2.0 mm low profile rug-
gedized thermoplastic molded 32.768KHz
SMD tuning fork crystal. This crystal is excel-
lent for SMD applications with limited circuit
board space requirements.
FEATURES
• Low profile 2.0 mm maximum height
• Industry standard footprint
• Long term stability
• Excellent shock resistance
• Excellent environmental
characteristics
• Tape & Reel (3,000 pcs)
• RoHS Compliant w/exemption for Pb in High Temp Solder
Discontinued
PART NUMBERING GUIDE “EXAMPLE”
MANUFACTURER
FREQUENCY
ECS
–
.327
–
LOAD CAPACITANCE
12.5
PACKAGE TYPE
–
24X
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
ECX-3TA
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
Δf/fo
32.768
12.5 Standard (6.0 Optional)
1.0 max.
±20
50 max.
-0.040 PPM/˚C² max.
-10 ~ +60
-40 ~ +85
50,000 min.
+25 ± 5
-55 ~ +125
500MΩ min./ DC 100V
2.0 typical
0.003 pF typical
±3 PPM max. @ +25˚C
UNITS
KHz
pF
µW
PPM
KΩ
PPM/(ΔC˚)
˚C
˚C
˚C
˚C
MΩ
pF
pF
PPM
PACKAGE DIMENSIONS (mm)
#4
#3
#1
#2
7.3 max.
0.4
5.08
Figure 1) ECX-3TA – Top, Side and End views
#4
#3
1.2
3.88
1.2
#1
#2
Figure 2) ECX-3TA – Land Pattern - Top view
RECOMMENDED OSCILLATION
CIRCUIT
Rf
Rd
C1
C2
ELECTRICAL CHARACTERISTICS
IC: TC 4069P
Rf: 10MΩ
Rd: 330KΩ (As required)
C₁ = 22pF, C₂ = 22pF
V_DD = 3.0V
In this circuit, low drive level with a maximum
of 1µW is recommended. If excessive drive is
applied, irregular oscillation or quartz element
fractures may occur.
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 cur-
vature. 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 (ΔT) ²
= -0.04 PPM x (20) ²
= -16.0 PPM
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX [phone] • WWW.ECSXTAL.COM
SMD CRYSTALS 13 SMD CRYSTALS