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Crystal Units
NX2520SG
For Automotive
■ Features
Crystal Unit with built-in Thermistor construction for automotive.
● 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.
● It is ideal for applications such as vehicle communication equipment and car
navigation systems.
● Meets the requirements for re-flow profiling using lead-free solder.
● Conforms to AEC-Q200.
■ Specifications
Model
Item
Nominal Frequency
NX2520SG
16 to 80 MHz
Overtone Order
Fundamental
Frequency Tolerance (25°C )
±10 × 10−6
Frequency versus Temperature Characteristics (with reference to +25 °C)
±25 × 10−6
*1
Operating Temperature Range
−40 to +105 °C
Storage Temperature Range
−40 to +105 °C
Equivalent Series Resistance
Refer to *2
Level of Drive
10 μW (Max. 100 μW)
Load Capacitance
7 pF
*1: In the case of 19.2M is with reference to +30°C.
NTC Thermistor for Temperature Sensor
Resistance [R25]
100k Ω ± 1 %
B-Constant [B25-50]
4250K ± 1 %
■ Dimensions
mm
2.5±0.1
#3
2.0.±0.1
#4
Terminal land connections
(TOP VIEW)
#4
#1
#3
#2
#1
Nominal frequency
(MHz)
Equivalent Series
Resistance max. [Ω]
16 to 19.2
120
19.2 to 20
80
20 to 40
50
40 to 80
40
0.90±0.10
Terminal
#1, #3 : X’ tal
#4 : Thermistor
#2 : Thermistor & GND
(0.8)
(0.65)
#1
#2
*1 Equivalent Series Resistance
(0.8)
Land pattern (Typical)
1.7
#2
1.0
(0.65)
1.3
C0.3
C0.3
#4
#3
1.2
If you require this product, please contact NDK sales.
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1604B_NX2520SG_e