7
Quartz Crystal 2011
Quartz Crystal Units for Low Frequencies
VT Series
• Compact tubular package.
• Photolithographic process.
• Excellent shock resistance and environmental char-
acteristics.
• RoHS directive compliant.
• Complete Pb-free.
Nominal Frequency
Frequency Tolerance
Turnover Temperature
Parabolic Coefficient
Load Capacitance
Motional Resistance (ESR)
Absolute Maximum Drive Level
Level of Drive
Shunt Capacitance
Frequency Ageing
Operating Temperature
Storage Temperature
Specifications
32.768kHz
(±5 x 10
−6
), ±10 x 10
−6
, ±20 x 10
−6
+25±5°C
(−3.5±0.8) x 10
−
8
/°C
2
4.5 to 12.5pF
50kΩ max.
1µW
0.1µW
0.9pF typ.
±3 x 10
−6
−10°C to +60°C
−30°C to +70°C
Conditions / Notes
Symbol
f_nom
f_tol
Ti
B
C
L
R
1
DLmax
DL
C
0
f_age
T_use
T_stg Piece part basis
Item
+25±3°C, First Year
Conditions without notice (Temperature: 25±2°C, DL: 0.1µW)
( 0.22)
φ
φ
5.0 max. 5.0 min.
(0.45)
1.5max.
VT-150-F
( 0.26)
6.0 +0.10
−0.15 5.0 min.
(0.65)
2.0max.
φ
φ
UNIT: mm
VT-200-FL / VT-200-F
VT-150-F/VT-200-F
FEATURES
Real Time Clocks, Timers, Water/Electricity/Gas
Meter, Remote-Controllers, Portable Applications
APPLICATIONS
STANDARD SPECIFICATIONS
DIMENSIONS
UNIT: mm
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