NX2520SG_15 Datasheet, PDF (1/1 Pages) NIHON DEMPA KOGYO – For Mobile Communications

Crystal Units
NX2520SG
■ 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.
● Lead-free. Meets the requirements for re-flow profiling using lead-free solder.
For Mobile Communications
■ Specifications
Item
Model
Nominal Frequency
Overtone Order
Frequency Tolerance (30 ± 3°C )
Frequency versus Temperature Characteristics (with reference to +30 °C)
Operating Temperature Range
Storage Temperature Range
Equivalent Series Resistance
Level of Drive
Load Capacitance
Specifications Number
NX2520SG
19.2 to 54 MHz
Fundamental
±10 × 10^−6
±12 × 10^−6
−30 to +85 °C
−40 to +85 °C
Refer to *1
10 μW (Max. 100 μW)
7 pF
STD-CTX-1
NTC Thermistor for Temperature Sensor
Dimensions
Resistance [R25]
B-Constant [B25-50]
■ Dimensions
2.5±0.1
#4
#3
#1
#2
(0.8)
#1
(0.8)
#2
0.6 × 0.3 × 0.3 mm
100k Ω ± 1 %
4250K ± 1 %
Terminal land connections
(TOP VIEW)
#4
#3
mm
#1
#2
Terminal
#1, #3 : X’ tal
#4 : Thermistor
#2 : Thermistor & GND
Land pattern (Typical)
1.7
*2 Equivalent Series Resistance
Nominal frequency Equivalent Series
(MHz)
Resistance max. [Ω]
19.2 to 20
70
20 to 40
50
40 to 54
40
C0.3
C0.3
#4
#3
1.2
Please specify the model name, frequency, and specification number when you order products.
For further questions regarding specifications, please feel free to contact us.
-5-
13A_1227_NX2520SG_e