ECS-31 Datasheet, PDF (1/1 Pages) List of Unclassifed Manufacturers – LOW FREQUENCY QUARTZ CRYSTALS

ECS-31 SERIES LOW FREQUENCY QUARTZ CRYSTALS
The ECS-31 Series features the same
characteristics as only tuning fork crystals
offer. Because of their miniature size they are
ideal for portable and communication
equipment applications.
FEATURES
• Miniature size
• Cost effective
• Long term stability
• Excellent shock and vibration characteristics
PART NUMBERING GUIDE “EXAMPLE”
MANUFACTURER
ECS
–
ECS
–
ECS
–
FREQUENCY
.400
.400
2.0
LOAD CAPACITANCE
–
12.5
–
–
12.5
–
–
12.5
–
* Package type examples (8=3x8, 13=2x6, 14=1x5)
PACKAGE TYPE*
8
13
14
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
FREQUENCY RANGE
FREQUENCY TOLERANCE
FREQUENCY VS. TEMP. CHARAC.
TURNOVER TEMPERATURE
TEMPERATURE COEFFICIENT
OPERATING TEMP. RANGE
STORAGE TEMP. RANGE
EQUIVALENT SERIES RESISTANCE
LOAD CAPACITANCE
MOTIONAL CAPACITANCE
SHUNT CAPACITANCE
CAPACITANCE RATIO
DRIVE LEVEL
INSULATION RESISTANCE
AGING (FIRST YEAR)
SHOCK RESISTANCE
3X8
2X6
1X5
fo
20KHz ~ 40KHz
30KHz ~ 150KHz
200KHz
∆f/fo
±30 PPM
±30 PPM
±10,000 PPM
∆f/fo
See Drawing
Tm
+25˚C typ.
ß
-0.034 PPM/˚C² typ.
TOPR
-10 ~ +60
TSTG
-40 ~ +85
R1
30 ~ 50 (max.)
10 (max.)
CL
12.5pF typ. (Customer Specified)
C1
1 ~ 4fF typ.
C0
0.8 ~ 1.7pF typ.
τ
425 ~ 800 typ.
DL
1µW max.
IR
500 MΩ min.
∆f/fo
±5 PPM max.
±5 PPM max.
Drop test of 3 times on a hard board from 75 cm height or shock test of 3000G x 0.3ms x 1/2 sin wave x 3 directions
CONDITIONS
KHz
@ +25˚C
-10˚C ~ +60˚C
Varies depending on frequency
˚C
˚C
KΩ
pF
fF
pF
µW
DC 100V±15
+25˚C ± 3˚C
Conditions will vary
depending on frequency
PACKAGE DIMENSIONS (mm)
8.2 Max.
10
Figure 1) ECS-31-8
6.2 Max.
10
Figure 2) ECS-31-13
5.1 Max.
4.3
Figure 3) ECS-31-14
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
ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX [phone] • WWW.ECSXTAL.COM
CRYSTALS 4 CRYSTALS