Low profile
2.0 x 1.6 mm Footprint
Extended Temp Range Option
RoHS Compliant
ECX-1637
SMD CRYSTAL
The sub miniature ECX-1637 is a very compact SMD Crystal.
The 2.0 x 1.6 x 0.45 mm ceramic package is ideal for today's
SMD manufacturing environment.
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS
Frequency Range
Frequency Tolerance
Frequency Stability
Shunt Capacitance
Load Capacitance
Drive Level
Operating Temperature
Storage Temperature
Aging (Per Year)
CONDITIONS
at +25°C
-20 to +70°C
Specify in P/N
ECX-1637
MIN
20.000
TYP
MAX
80.000
± 50 *
± 50 *
5
UNITS
MHz
ppm
ppm
pF
pF
µW
°C
°C
ppm
8
-20
-55
100
+70
+125
±5
@ +25°C ±3°C
EQUIVALENT SERIES RESISTANCE/MODE OF OSCILLATION
FREQUENCY RANGE
(MHz)
MODE OF OSC MAX ESR
Ω
FREQUENCY RANGE
(MHz)
MODE OF OSC MAX ESR
Ω
20.00 ~ 23.999
Fundamental
100
26.000 ~ 39.999
Fundamental
60
24.000 ~ 25.999
Fundamental
80
40.000 ~ 80.000
Fundamental
50
DIMENSIONS (mm)
Pad Connections
1
2
3
4
In/Out
Gnd
Out/In
Gnd
Figure 1) Top, Side, Bottom, End views and
Crystal Connection (Top View)
Figure 2) Suggested Land Pattern
Custom Options
PART NUMBERING GUIDE: Example ECS-240-8-37-TR
ECS - Frequency Abbreviation - Load Capacitance - Package
240 = 24.000 MHz
See P/N Guide
8 =8 pF
S=Series
37 =
ECX-1637
Tolerance
Blank = Std
A = ± 25 ppm
J = ± 20 ppm
R = ± 15 ppm
C = ± 10 ppm
* Stability
Blank = Std
D = ± 100 ppm
E = ± 50 ppm
G = ± 30 ppm
H = ± 25 ppm
T = ± 20 ppm
W = ± 15 ppm
K = ± 10 ppm
Temp Range
Blank = Std
L = -10 ~ +70°C
M = -20 ~ +70°C
N = -40 ~ +85°C
P = -40 ~ +105°C
S = -40 ~ +125°C
U = -55 ~ +125°C
- Packaging
TR= Tape
& Reel
1K/Reel
*Consult Factory for available stability
options over extended temp range.
Rev. 11/11
1105 South Ridgeview Road
Olathe, KS 66062
Phone: 913.782.7787
Fax: 913.782.6991
www.ecsxtal.com
ECX-1637
SMD CRYSTAL
Frequency Abbreviations
FREQUENCY
MHz
20.000
24.000
26.000
27.000
27.120
30.000
32.000
36.000
38.400
40.000
48.000
CODE
200
240
260
270
271.2
300
320
360
384
400
480
POCKET TAPE DIMENSIONS (mm)
Package Data
Item
Lid
Base
Sealing
Terminal
Plating
RoHS
Description
Metal
Ceramic
Seam/EB
Tungsten (metalized)
Gold/Nickel
Surface/Under
Compliant (Pb Free)
1105 South Ridgeview Road
Olathe, KS 66062
Phone: 913.782.7787
Fax: 913.782.6991
www.ecsxtal.com
