Surface Mount Quartz Crystal
FEATURES
Standard 2.5mm x 2.0mm Seam Weld Package
Fundamental Crystal Design
Frequency Range 12 – 60MHz
Frequency Tolerance, ±20ppm Standard
Frequency Stability, ±20ppm Standard
Operating Temperature to -40°C to +85°C
Tape & Reel Packaging Standard, EIA-481
RoHS/Green Compliant [6/6]
Model 425
APPLICATIONS
Model 425 is a low cost quartz resonator used in a wide range of commercial applications including
wearable and handheld electronics, notebooks, tablets, computer peripherals, Bluetooth, ZigBee and USB interfaces.
ORDERING INFORMATION
425
MODE OF OSCILLATION
F = Fundamental
FREQUENCY TOLERANCE @ +25°C
1 = ±10ppm
X = ±15ppm
2 = ±20ppm
Y = ±25ppm
3 = ±30ppm
M
FREQUENCY IN MHz
M - indicates MHz and decimal point.
LOAD CAPACITANCE
K = 8pF
J = 9pF
A = 10pF
L = 12pF
C = 16pF
D = 18pF
E = 20pF
F = 24pF
G = 30pF
S = Series
1,2
TEMPERATURE STABILITY/TEMPERATURE RANGE
-20°C to +70°C
-30°C to +85°C
-40°C to +85°C
1 = ±10ppm
X = ±15ppm
2 = ±20ppm
3 = ±30ppm
5 = ±50ppm
R = ±10ppm
Y = ±15ppm
N = ±20ppm
4 = ±30ppm
8 = ±50ppm
W = ±15ppm
6 = ±20ppm
7 = ±30ppm
9 = ±50ppm
1 Frequency is recorded with 3 leading digits before the ‘M’ and 4 significant digits after the ‘M’ [including zeros].
.
[Ex. XXXMXXXX (01
6M3840), XXXMXXXX (022M1 84)]
1
2] There are frequencies that have significant digits after the 'M' that exceed the 4 digits. The remaining digits will be truncated
from the CTS part number, but the factory will calibrate to the full frequency desired. Ex. P/N Frequency = Actual Frequency
1
3M5537 = 1
3.553750 MHz
1
4M31 = 1 81 MHz
81 4.31 80
1
6M6666 = 1
6.666670 MHz
28M6363 = 28.636360 MHz
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
PACKAGING INFORMATION
[Reference]
Device quantity is 3k pieces per 180mm reel.
Document No. 008-0332-0
Page 1- 2
Rev. C
www.ctscorp.com
Model 425
Quartz Crystal
ELECTRICAL CHARACTERISTICS
PARAMETER
Frequency Range
Operating Mode
Crystal Cut
Frequency Tolerance @ +25°C
Frequency Stability Tolerance
[Operating Temperature Range, Referenced to +25°C Reading]
Operating Temperature Ranges
VALUE
12MHz to 60MHz
Fundamental
AT-Cut
±20ppm, Standard
±20ppm, Standard
-20°C to +70°C
-30°C to +85°C
-40°C to +85°C
12MHz - <20MHz
120 Ohms
20MHz - <30MHz
80 Ohms
30MHz - <36MHz
60 Ohms
36MHz - 60MHz
50 Ohms
See Ordering Information
3.0pF Typical, 5.0pF Maximum
10µW Typ., 200µW Max.
±3ppm/yr Typical
500M Ohms @ DC 100V
-40°C to +90°C
ELECTRICAL PARAMETERS
Equivalent Series Resistance [Maximum]
Load Capacitance
Shunt Capacitance [C
0
]
Drive Level
Aging @ +25°C
Insulation Resistance
Storage Temperature Range
MECHANICAL SPECIFICATIONS
PACKAGE DRAWING
MARKING INFORMATION
1. XX.XX – Frequency in MHz.
2. C – CTS and Pin 1 identifier.
3. ** – Manufacturing Site Code.
4. D – Date code. See Table I for codes.
NOTES
1. Complete CTS part number, frequency value, date code and
manufacturing site code information must appear on reel and carton
labels.
2. Terminations #2, #4 and the metal lid are connected internally.
End user may connect these pins to circuit ground for EMI
suppression.
3. Termination pads (e4); barrier plating is nickel [Ni] with gold [Au]
flash plate.
4. Reflow conditions per JEDEC J-STD-020; +260°C maximum, 10
seconds.
5. MSL = 1.
SUGGESTED SOLDER PAD GEOMETRY
XX.XX
C**D
TABLE I – DATE CODE
MONTH
YEAR
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
JAN
A
N
a
n
FEB
B
P
b
p
MAR
C
Q
c
q
APR
D
R
d
r
MAY
E
S
e
s
JUN
F
T
f
t
JUL
G
U
g
u
AUG
H
V
h
v
SEP
J
W
j
w
OCT
K
X
k
x
NOV
L
Y
l
y
DEC
M
Z
m
z
Document No. 008-0332-0
Page 2 - 2
Rev. C
Real-time operating system RTOS
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