NDK NX1612SB For mobile communication Datasheet

Crystal Units
NX1612SB
For Mobile Communications
■ Features
Crystal Unit with built-in Thermistor construction.
● Minimize circuit design space by combining crystal unit into one component.
(Presently, Crystal unit and temperature sensor is mounted in one board separately.)
● Placing temperature sensor(Thermistor) close to Crystal blank in one airtight
housing can detect more precise crystal blank temperature. Improvement on
frequency temperature compensation compared to present Crystal unit.
● Single cavity housing which is ideal to module applications.
● External configuration size is 1.6x1.2mm typ., H0.45 mm max.
● A surface-mount crystal oscillator. (Reflow soldering is possible.)
● Lead-free. Meets the requirements for re-flow profiling using lead-free solder.
■ Specifications
Model
Item
Nominal Frequency
NX1612SB
26 to 76.8 MHz
Overtone Order
Fundamental
Frequency Tolerance (25 ± 3°C )
±10 × 10−6
Frequency versus Temperature Characteristics (with reference to +29 °C)
±12 × 10−6
Operating Temperature Range
−30 to +85 °C
Storage Temperature Range
−40 to +85 °C
Equivalent Series Resistance
Refer to *1
Level of Drive
10 μW
Load Capacitance
7 pF
Specifications Number
STD-CTI-1
NTC Thermistor for Temperature Sensor
Resistance [R25]
100k Ω ± 1 %
B-Constant [B25-50]
4250K ± 1 %
■ Dimensions
1.6±0.1
Terminal land connections
(TOP VIEW)
*1 Equivalent Series Resistance
Nominal Frequency
(MHz)
Equivalent Series
Resistance max. [Ω]
26 to 38.4
80
38.4 to 76.8
50
#3
#4
1.2±0.1
mm
COVER
#2
0.45 Max.
#1
#1,#3: Crystal
#2: Thermistor and GND (Connection with cover)
#4: Thermistor
(0.5)
#1
#2
Land pattern (Typical)
(0.5)
0.65
0.75
(C0.2)
#4
(0.55)
#3
(0.55)
0.75
1.05
Please specify the model name, frequency, and specification number when you order products.
For further questions regarding specifications, please feel free to contact us.
1703B_NX1612SB_e
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