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
3.8 x 8.0 millimeter Surface Mount
Thermoplastic Package
General Product Specication
CTP3-32.768-12.5-20
1/4
TCR
June 10, 2006
EG
JL
RoHS Compliant
Pb - Lead Free
32.768 KHz
Standard ±20
Optional ±15
±3 (first year)
25 ±5
-0.035 ± 0.008 PPM/
ºC²
Standard -10 to +60
Optional -40 to +85
-55 to +125
50 K Ohm Max
Standard 12.5
Optional 6.0
1.5 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. -
Load Capacitance
Frequency Tolerance at 25º C
Resistance to Shock
Drive Level
Insulation Resistance
Quality Factor
Nominal Frequency
Aging
Turnover Temperature
ºC
Typ
PPM
Temperature Coefficient
Temperature Range (Storage)
Equivalent Series Resistance
Shunt Capacitance
Motional Capacitance
pF
Capacitance Ratio
Temperature Range (Operating)
Page: Date: P/N:
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Pad Connection:
Mechanical Outline:
PCB Solder Pad Layout:
Package is Thermoplastic.
Dimensions are millimeters.
2/4 June 10, 2006
Top View
CTP3-32.768-12.5-20
Page: Date: P/N:
www.aker-usa.com
Carrier Tape Dimensions:
Solder Reow Characteristics:
Dimensions are millimeters.
3/4 June 10, 2006 CTP3-32.768-12.5-20
Page: Date: P/N:
www.aker-usa.com
June 10, 2006
4/4
How to build a Part Number:
Part Number Example:
CTP3-32.768-12.5-20-R
CTP3- 3.8 x 8.0 mm Thermoplastic SMD Package
32.768 KHz Nominal Frequency
12.5 pF Load Capacitance
20: ±20 PPM Frequency Tolerance
-10 to +60° 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- Quantities less than 3000 are shipped bulk in ESD pouches.
4- Specication subject to change without notice.
CTP3-32.768-12.5-20
CTP
Parameter
3
3.8 x 8.0 mm Thermoplastic SMD
32.768
KHz
12.5
12.5 pF
Option
6
6 pF
20
±20 PPM
Option
15
±15 PPM
See Notes
-10 to +60 ºC
Option
X
-40 to +85 ºC
-
R
Tape and Reel
-
Frequency Tolerance
Packaging
Package
Series
-
-
Temperature Range
Frequency
Load Capacitance
-
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 (-0.035 x (° C)2) =
(-0.035 x (20)2 = -14 PPM