
3
ECS, INC. INTERNATIONAL
1105 S. RIDGEVIEW OLATHE, KS 66062 913-782-7787 800-237-1041 FAX 913-782-6991 WWWECSXTAL.COM
CRYSTALS CRYSTALS
1
8.2 Max.
10
ECS tuning fork type crystals are used as a
clock source in communication equipment,
measuring instruments, microprocessors and
other time management applications. Their
low power consumption makes these crystals
ideal for portable equipment.
FEATURES
Cost effective
Tight tolerance
Long term stability
Excellent resistance and environmental characteristics
ECS-3X8, 2X6, 1X5
32.768 KHz TUNING FORK CRYSTALS
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
NOMINAL FREQUENCY
Fo
FREQUENCY TOLERANCE
f/fo
LOAD CAPACITANCE (typ.)
C
L
DRIVE LEVEL (max.)
D
L
RESISTANCE
AT SERIES RESONANCE
R
1
Q-FACTOR
Q
TURNOVER TEMPERATURE
T
M
TEMPERATURE COEFFICIENT
SHUNT CAPACITANCE
C
o
CAPACITANCE RATIO
OPERATING TEMP. RANGE
T
OPR
STORAGE TEMP. RANGE
T
STG
SHOCK RESISTANCE
INSULATION RESISTANCE
IR
AGING (FIRST YEAR)
f/fo
MOTIONAL CAPACITANCE
C
1
Note: Contact factory for optional load capacitance.
PACKAGE DIMENSIONS (mm)
ECS-3X8
32.768
±20
12.5
1
35 (max.)
90,000 (typ.)
+25 ±5
-0.040ppm/C
2
max.
1.60 (typ.)
460 (typ.)
ECS-2X6
32.768
±20
12.5
1
35 (max.)
70,000 (typ.)
+25 ±5
-0.040ppm/C
2
max.
1.35 (typ.)
450 (typ.)
-10~+60
-40~+85
ECS-1X5
32.768
±20
8.0
1
40 (max.)
80,000 (typ.)
+25 ±5
-0.040ppm/C
2
max.
1.00 (typ.)
400 (typ.)
UNITS
KHz
PPM
pF
μW
K
C
PPM/(
C
pF
C
C
Drop test 3 times on hard wooden board from height of 75cm / ±5 PPM max.
500M
min./DC100V
±3 PPM max. @ +25C ±3C
0.0030 (typ.)
PPM
M
PPM
pF
0.0035 (typ.)
0.0025 (typ.)
PART NUMBERING GUIDE
“EXAMPLE”
FREQUENCY
.327
.327
.327
LOAD CAPACITANCE
12.5
12.5
PACKAGE TYPE*
8
13
14
ECS
ECS
ECS
–
–
–
–
–
–
–
–
–
8
Figure 1) ECS-3X8
0
6.2 Max.
10
Figure 2) ECS-2X6
0
5.1 Max.
4.3
Figure 3) ECS-1X5
*Package type examples (8=3x8, 13=2x6, 14=1x5)
Rf
Rd
C
2
C
1
ELECTRICAL CHARACTERISTICS
IC: TC 4069P
Rf: 10M
Rd: 330K
(As required)
C
1
= 22pF, C
2
= 22pF
V
DD
= 3.0V
RECOMMENDED OSCILLATION
CIRCUIT
PARABOLIC TEMPERATURE CURVE
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
-20
-10
-20
-30
-40
-50
-60
-10
0
10
20
30
40 50
60
70
f/f (PPM)
T (C)
To determine frequency stability, use parabolic
curvature. For example: What is the stability at 45C
1) Change in T (C) = 45 -25 = 20C
2) Change in frequency = -0.04 PPM x (
T)
2
= -0.04 PPM x (20)
= -16.0 PPM
2