Crystal Units
- 1 -
12A_0906_NX2520SG_e
NX2520SG
For Mobile Communications
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.
*2 Equivalent Series Resistance
Nominal frequency
(MHz)
Equivalent Series
Resistance max. [Ω]
19.2 to 20 70
20 to 40 50
40 to 54 40
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Features
Item
Model
NX2520SG
Nominal frequency 19.2 to 54 MHz
Overtone order Fundamental
Frequency tolerance (30°C) ±10 × 10
−6
Frequency versus temperature characteristics (with reference to +30 °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 (Max. 100 μW)
Load capacitance 7 pF
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Specications
When ordering our products, specify them with an “Ordering Code” that consists of the following :
Model name
-
Frequency (Max : 9 digits)
M -
Number for specifying an order
Example NX2520SG-19.200M-STD-CTX-1
If you have any queries concerning our standard frequencies and numbers for specifying orders, please contact our sales representatives or visit our homepage
(http://www.ndk.com/).
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How to Specify an Order
mm
2.0.±0.1
0.90±0.10
(0.8)
(0.65)
C0.3
C0.3
#3#4
#1 #2
#3#4
#1 #2
2.5±0.1
(0.65)
(0.8)
1.7
1.3
1.2
1.0
Land pattern (Typical)
Terminal land connections
(TOP VIEW)
#3#4
#1 #2
Terminal
#1, #3 : X’ tal
#4 : Thermistor
#2 : Thermistor & GND
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Dimensions
