Data Sheet

TF16 Series
Tuning Fork Crystal
FEATURES
•
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32.7680 kHz Frequency Reference
Package Size 1.6mm x 1.0mm
Tuning Fork Crystal Design
Hermetic Ceramic Package
Frequency Tolerance, ±20 ppm Standard
[±10 ppm available]
Frequency Temperature Coefficient, -0.030ppm/°C2
Operating Temperature, -40°C to +85°C Standard
Tape & Reel Packaging, EAI-481
RoHS/Green Compliant (6/6)
APPLICATIONS
The TF16 crystal series is ideal for use in a wide range of communication equipment,
notebooks, computer peripherals, audio visual, Bluetooth and other wireless applications, USB interfaces, PDAs
and automotive electronics.
ORDERING INFORMATION
TF 1 6
3 2 K 7 6 8 0
PACKAGE SIZE
PACKAGING OPTIONS
T - 1k pcs./reel
R - 3k pcs./reel
U - 5k pcs./reel
16 = 1.6mm x 1.0mm
FREQUENCY TOLERANCE @ 25°C
1 = ± 10 ppm
2 = ± 20 ppm [standard]
FREQUENCY IN kHz
K - indicates kHz and decimal point.
1
LOAD CAPACITANCE
P = 12.5 pF [standard]
J = 9 pF
1] Frequency is recorded with two leading digits before the ‘K’ and 4 significant digits after the ‘K’ (including zeros).
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
PACKAGING INFORMATION [Reference]
Factory may package reels in quantities of 1k pcs., 3k pcs. or 5k pcs. Reel size is 180mm.
Document No. 008-0416-0
Page 1- 3
www.ctscorp.com
Rev. C
TF16 Series
Tuning Fork Crystal
ELECTRICAL PARAMETERS
ELECTRICAL CHARACTERISTICS
PARAMETER
Frequency
Operating Mode
Frequency Tolerance *
Frequency Temperature Coefficient
Frequency Stability
Operating Temperature Range
Turnover Temperature
Load Capacitance *
Aging
Drive Level
Shunt Capacitance
Motional Capacitance
Series Resistance
Insulation Resistance
Storage Temperature Range
SYMBOL
f0
Δf/f0
Δf/fM
CONDITIONS
@+25°C
TA
TM
CL
Δf/f0
DL
C0
C1
R1
Ri
TSTR
±5°C
Standard
@+25°C, 1st year
@1 MHz
+100Vdc ±15Vdc
MIN
TYP
MAX
32.7680
Flexural Mode [Tuning Fork]
20
-0.030 ±0.01ppm/°C2
See Figure 1
-40
+85
+25
12.5
3.0
0.1
0.5
7.0
6.0
90
500
-55
+125
UNIT
kHz
± ppm
°C
°C
pF
± ppm
µW
pF
fF
k Ohms
M Ohms
°C
* See Ordering Information for available options.
FIGURE 1
PARABOLIC TEMPERATURE CURVE
0
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
-10
-20
-30
-40
Frequency stability [ppm] is determined using parabolic
curve, Δf = Temperature Coefficent(TA-TM)2.
Δf/f [ppm]
-50
-60
Ex. Find frequency stability at TA = 45°C
Δf = -0.030(45-25)2
Δf = -0.030(20)2
Δf = -12.0 ppm
-70
-80
-90
-100
-110
-120
-130
Temperature [°C]
Document No. 008-0416-0
Page 2 - 3
Rev. C
TF16 Series
Tuning Fork Crystal
MECHANICAL SPECIFICATIONS
TF20 PACKAGE DRAWING
TF16D
MARKING INFORMATION
1. TF16 - CTS Model Series.
2. D – Date code. See Table I for codes.
TABLE I – DATE CODE
MONTH
JAN
YEAR
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
M
2001
2005
2009
2013
2017
A
B
C
D
E
F
G
H
J
K
L
2002
2006
2010
2014
2018
N
P
Q
R
S
T
U
V
W
X
Y
Z
2003
2007
2011
2015
2019
a
b
c
d
e
f
g
h
j
k
l
m
2004
2008
2012
2016
2020
n
p
q
r
s
t
u
v
w
x
y
z
SUGGESTED SOLDER PAD GEOMETRY
Document No. 008-0416-0
NOTES
1. Complete CTS part number, frequency value,
date code and manufacturing site code information
must appear on reel and carton labels.
2. Termination pads (e4); barrier plating is nickel [Ni]
with gold [Au] flash plate.
3. Reflow conditions per JEDEC J-STD-020;
260°C maximum, 20 seconds.
4. MSL = 1.
Page 3 - 3
Rev. C
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