Specication Title:
Part Number:
CAD:
Appr:
Review:
All dimensions are millimeters.
Page: Date:
Revisions
Ltr Date Appr
www.aker-usa.com
11-3 Chien-Kuo Rd T.E.P.Z. 4027 Taiwan, ROC
Electrical Specications:
Microprocessor Crystal Unit
32.768 KHz (Time of Day)
3.2 x 1.5 millimeter Surface Mount
Ceramic Package
General Product Specication
CTS3 Series
1/4
TCR
Oct. 21, 2018
EG
JL
RoHS Compliant
Pb - Lead Free
AEC Q200
32.768 KHz
±20
±3
25 ±5
-0.034 ± 0.008 PPM/
ºC²
-40 to +85
-40 to +125
-55 to +140
65 K Ohm Max
Standard 12.5
6.0
7.0
9.0
1.7 pF Typ
3.0 fF Typ
1.0 uW Max
500 at at 100 Vdc ± 15 Vdc M Ohm Min
70000
450
±5 PPM maximum offset from 75 cm drop
test in all axes on to a hard surface. -
Resistance to Shock
Drive Level
Insulation Resistance
Quality Factor
Nominal Frequency
Aging per year
Turnover Temperature
Temperature Range (Extended)
Frequency Tolerance at 25º C
Typ
PPM
Temperature Coefficient
Temperature Range (Storage)
Equivalent Series Resistance
Shunt Capacitance
Motional Capacitance
Capacitance Ratio
Load Capacitance Optional pF
Temperature Range ºC
Page: Date: P/N:
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Mechanical Outline:
PCB Solder Pad Layout:
Package is Ceramic-Metal.
Dimensions are millimeters.
2/4 Oct. 21, 2018 CTS3 Series
Page: Date: P/N:
www.aker-usa.com
Carrier Tape Dimensions:
Solder Reow Characteristics:
Dimensions are millimeters.
3/4 Oct. 21, 2018 CTS3 Series
Page: Date: P/N:
www.aker-usa.com
Oct. 21, 2018
4/4
How to build a Part Number:
Part Number Example:
CTS3-32.768-9-20-R
CTS3- 3.2 x 1.5 mm SMD Crystal Unit
32.768 KHz Nominal Frequency
9 pF Load Capacitance
20: ±20 PPM Frequency Tolerance
-40 to +85° C Temperature Range
R: Tape and Reel Packaging
Notes:
1- Standard Temperature Range does not need to be included in Part Number description.
2- Product is shipped in Tape and Reel conguration. Each reel contains 3000 pieces.
3- Specication subject to change without notice.
CTS3 Series
Frequency vs. Temperature Characteristics:
To calculate the frequency stability the parabolic
curvature constant (K) is needed.
For calculating the stability at 45 ° C?
1- Change in temperature (T) is (45-25) = +20 ° C
2- Change in frequency is (-0.034 x (° C)2) =
(-0.035 x (20)2 = -13.6 PPM
CTS Parameter
33.2 x 1.5 mm SMD
32.768 KHz
Standard 12.5 12.5 pF
66 pF
77 pF
99 pF
20 ±20 PPM
See Notes -40 to +85 ºC
X-40 to +125 ºC
RTape and Reel
Option
Packaging
Package
-
Series
-
-
Temperature Range (Extended)
Frequency
-
Frequency Tolerance
Temperature Range
-
Load Capacitance