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 pac ka g e is ide al for today's
SMD manufacturing environment.
1105 South Ridgeview Road z Olathe, KS 66062 z Phone: 913.782.7787 z Fax: 913.782.6991 z www.ecsxtal.com
PARAMETERS CONDITIONS MIN TYP MAX
ECX-1637
Pad Connections
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
UNITS
Aging Characteristics (Per Year)
Operating Temperature
Storage Temperature
Drive Level
Frequency FO
Frequency Tolerance
Frequency Stability (ref @ 25°C)
Shunt Capacitance
Load Capacitance
Equivalent Series Resistance
-20 ~ +70°C
@ +25°C
Fundamental Mode
Topr
Tstg
@ +25°C ± 3°C
80.000
± 50 *
± 50 *
5.0
100
100
+70
+85
± 5
1
2
3
4
In/Out
Gnd
In/Out
Gnd
24.000
-20
-40
8
+25
MHz
ppm
ppm
pF
pF
Ω
µW
°C
°C
ppm
PACKAGE DIMENSIONS (mm)
PART NUMBERING GUIDE: Example ECS-240-8-37-TR Custom Options
 Low Profile
 2.0 x 1.6 mm Footprint
 Extended Temp. Range Option
 RoHS Compliant
ECS - Frequency Abbreviation - Load - Package Type - Tolerance - Stability - Temp Range - Packaging
240 = 24.000 MHz
See P/N Guide for
Std Frequencies
8 = 8.0 pF
S = Series
-37 =
ECX-1637
-TR =
Tape & Reel
1K/Reel
A = ± 25 ppm
C = ± 10 ppm
D = ±100 ppm
E = ± 50 ppm
G = ± 30 ppm
H = ± 25 ppm
K = ± 10 ppm
L = -10 ~ +70°C
M = -20 ~ +70°C
N = -40 ~ +85°C
P = -40~+105°C
ECX-1637
SMD CRYSTAL
1105 South Ridgeview Road z Olathe, KS 66062 z Phone: 913.782.7787 z Fax: 913.782.6991 z www.ecsxtal.com
FREQUENCY
MHz
Package Data
Item Description
CODE
Frequency Abbreviations
POCKET TAPE DIMENSIONS (mm)
24.000
24.576
25.000
26.000
27.000
27.120
29.491
30.000
32.000
34.400
36.000
38.400
40.000
44.000
44.545
48.000
54.000
240
245.76
250
260
270
271.2
294.91
300
320
344
360
384
400
440
445.45
480
540
Lid Metal
Ceramic
Seam/EB
Tungsten (metalized)
Compliant (Pb Free)
Gold/Nickel
Surface/Under
Base
Sealing
Terminal
Plating
RoHS
