NDK NIHON DEMPA KOGYO CO.,LTD.

 

Search within NDK

 

[PDF ]

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

  • RoHS compliant
  • Pb Free
 

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

 

 

Copyright© 1997- NIHON DEMPA KOGYO CO., LTD.