NX2520SG (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.

NX2520SG

Specifications

Standard	Standard	Optional
Nominal Frequency (MHz)	19.2 ≤ F ≤ 54	19.2 ≤ F ≤ 54
Package Size (L×W×H : mm)	2.5×2.0×0.9	2.5×2.0×0.9
Overtone Order	Fundamental	Fundamental
Frequency Tolerance (25±3°C)	±10×10^-6	±10×10^-6
Frequency versus Temperature Characteristics (with reference to 29°C)	±12×10^-6	Please contact us about temp extended case, *1
Operating Temperature Range (°C)	-30 to +85	Please contact us about temp extended case, *1
Storage Temperature Range (°C)	-40 to +105	-40 to +105
Equivalent Series Resistance (Ω)	Max. 70 (19.2 ≤ F < 20MHz) Max. 50 (20 ≤ F < 40MHz) Max. 40 (40 ≤ F ≤ 54MHz)	Max. 70 (19.2 ≤ F < 20MHz) Max. 50 (20 ≤ F < 40MHz) Max. 40 (40 ≤ F ≤ 54MHz)
Level of Drive (µW)	10 (Max. 100)	10 (Max. 100)
Load Capacitance (pF)	7	6 to 18
Frequency Aging (+25°C)	---	Max. ±3×10^-6/year *1
Specification Number	STD-CTX-1	Refer to *2

NTC Thermistor for Temperature Sensor

Resistance [R25]	100kΩ±1%
B-Constant [R25-50]	4250K±1%

Please specify the model name, frequency, and specification number when you order products.
For further questions regarding specifications, please feel free to contact us.

*1 If you have any other requests, NDK will study it.
*2 Ordering information: Overtone Order Fundamental / 3rd Overtone, the Operating Temperature Range, Frequency versus Temperature Characteristics, Frequency Tolerance, and Load Capacitance.
  Ex. Model, Frequency (38.400000MHz 6digits),
      S1:Fundamental or S3:3rd Overtone - Operating Temperature Range (-30 to +85°C) - Frequency versus Temperature Characteristics (±12×10^-6) - Frequency Tolerance (±12×10^-6) - Load Capacitance (7pF)
      NX2520SG
      38.400000MHz
      S1-3085-12-12-7

Dimensions

NX2520SG Dimensions

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