ECS-31X Datasheet, PDF (1/1 Pages) ECS, Inc. – LOW FREQUENCY QUARTZ CRYSTALS

ECS-31X SERIES LOW FREQUENCY QUARTZ CRYSTALS
The ECS-31X 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
• PbFree/RoHS Compliant
PART NUMBERING GUIDE “EXAMPLE”
MANUFACTURER
FREQUENCY
LOAD CAPACITANCE
ECS
–
.400
–
12.5
–
ECS
–
.400
–
12.5
–
ECS
–
2.0
–
12.5
–
* Package type examples (8x=3x8, 13x=2x6, 14x=1x5)
PACKAGE TYPE*
8X
13X
14X
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PARAMETERS
3X8X
2X6X
1X5X
FREQUENCY RANGE
fo
FREQUENCY TOLERANCE
Δf/fo
FREQUENCY VS. TEMP. CHARAC.
Δf/fo
TURNOVER TEMPERATURE
Tm
TEMPERATURE COEFFICIENT
ß
20KHz ~ 40KHz
±30 PPM
30KHz ~ 150KHz
±30 PPM
See Drawing
+25˚C typ.
-0.034 PPM/˚C² typ.
200KHz
±10,000 PPM
-10˚C ~ +60˚C
OPERATING TEMP. RANGE
STORAGE TEMP. RANGE
EQUIVALENT SERIES RESISTANCE
LOAD CAPACITANCE
MOTIONAL CAPACITANCE
SHUNT CAPACITANCE
CAPACITANCE RATIO
TOPR
TSTG
R1
CL
C1
C0
τ
-10 ~ +60
-40 ~ +85
30 ~ 50 (max.)
12.5pF typ. (Customer Specified)
1 ~ 4fF typ.
0.8 ~ 1.7pF typ.
425 ~ 800 typ.
10 (max.)
DRIVE LEVEL
DL
1µW max.
INSULATION RESISTANCE
IR
500 MΩ min.
AGING (FIRST YEAR)
SHOCK RESISTANCE
Δf/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
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-31X-8
6.2 Max.
10
Figure 2) ECS-31X-13
5.1 Max.
4.3
Figure 3) ECS-31X-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)
2) Change in frequency
= 45 -25 = 20˚C
= -0.04 PPM x (_ΔST) 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