page 3 of 7
CRYSTAL SPECIFICATION
1.
2.
3.
4.
5.
6.
Description:
Quartz Crystal
Nominal Frequency:
8.000000MHz
Oscillation Mode:
Fundamental
Cutting Mode:
AT cut
Measurement Instrument: S&A 250B(Measured FL)
Electrical Characteristics:
[1]Operation Conditions:
Item
Operating Temperature Range
Storage Temperature Range
Load Capacitance
Drive Level
[2]Frequency Stability:
Item
Tolerance
Stability Over Temperature
Aging
Symbol
dF/Fo
dF/F25
dF/F25
MIN.
-30
-30
-3
TYP.
MAX.
30
30
3
Unit
ppm
ppm
ppm
Condition
Refer to Center Frequency@25±3℃
Refer to Operating Temperature
Per Year
Symbol
Topt
Tstg
CL
DL
0.1
MIN.
-10
-20
20
100
TYP.
MAX.
60
70
Unit
℃
℃
pF
uW
Condition
dF/Fo:Frequency Deviation Refer to Center Frequency
dF/F25:Frequency Deviation Refer to 25℃ Frequency
[3]Electrical Performance:
Item
Equivalent Series Resistance
Shunt Capacitance
Insulation Resistance
7.
Marking:Laser
TKD
:Company Logo
8.000:Nominal Frequency
Symbol
ESR
C0
IR
500
MIN.
TYP.
MAX.
80
7
Unit
Ω
pF
MΩ
@DC 100 Volt
@Series
Condition
TKD8.000
page 5 of 7
9.
Reliability Specification
Test Item
Condition of test
Performance
Requirements
Tensile Strength
Termination
Solder ability
The unit’s lead wire should withstand a tensile force applied to the There should be no
termination in the direction of its draw-out axis of up to 1000g abnormalities detected on
maintained as is for 10±2s
the unit
The lead is immersed in a 235±5℃ solder bath within 2±0.5 A new uniform coating of
seconds.
solder shall cover min
mun 95% of the surface
being immersed.
Endurance condition by a frequency sweep shall be made. The
entire frequency range from 10HZ to 50HZ and return to
10HZ,shall be transverseb in 1min. Amplitude(total
excursion):1.5mm this motion shall be applied for a period of 2h
each of 3 mutually perpendicular axes(a total of 6h)
Form 70cm height 3 times on 3cm hard wooden floor
(1).Frequency
Change:±5ppm
(2).Resistance:±15%
Vibration
Drop
(1).Frequency
Change:±5ppm
(2).Resistance:±15%
Shock
Peak acceleration:981m/s
2
duration of the pulse :6ms three (1).Frequency
successive shocks shall be applied in both direction of 3 mutually Change:±5ppm
perpendicular axes(a total of 18 shocks)
(2).Resistance:±15%
The unit shall be stored at a temperature of 40±2℃with relative (1).Frequency
humidity of 90%to95% for 48h, then it shall be subjected to Change:±5ppm
standard atmospheric conditions for 1
½
2h after which (2).Resistance:±15%
measurement shall be made.
The unit shall be stored at a temperature of 100℃±5℃ for 24h, (1).Frequency
then it shall be subjected to standard atmospheric conditions for Change:±5ppm
1½2h after which measurement shall be made.
(2).Resistance:±15%
The unit shall be stored at a temperature of-40℃±5℃ for 48h, then (1).Frequency
it shall be subjected to standard atmospheric conditions for 1½2h Change:±5ppm
after which measurement shall be made.
(2).Resistance:±15%
The unit shall be stored at a temperature of 85℃±5℃ for 7d then it
shall be subjected to standard atmospheric conditions for 1½2h
after which measurement shall be made.
Refer
to
specification
verdict
Damp heat
Dry heat
Cold
Aging
Temperature
cycling
The unit shall be subjected to 5 successive change of temperature Refer
to
cycles, each as show in table below,then it shall be subjected to specification
standard atmospheric conditions for 1
½
2h after which
measurement shall be made
Temperature
1
2
3
4
-40℃±3℃
Duration
30min
verdict
Standard atmospheric Within 30s
conditions
100℃±3℃
30min
Standard atmospheric Within 30s
conditions
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