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A highly stable and reliable crystal unit with a metallic package, also suitable for surface mounting.
  • With many standard frequencies available, this unit is ideal for a variety of applications.
  • Compatible with surface mounting.
  • Airtight metal package ensures high-reliability.
  • AT-51CD2 meets the requirements for re-flow profiling using lead-free solder.
 AT-51CD2 Picture
RoHS compliant Pb free
Frequency(MHz)
Overtone Order Fundamental / 3rd Overtone
Frequency Tolerance (at 25±3°C) ±20×10-6
Temperature Characteristics (refer to 25°C) ±30×10-6
Operating Temperature Range -10~+70°C
Equivalent Series Resistance 400Ωmax. (Fundamental : 3.1875~3.2MHz)
200Ωmax. (Fundamental : 3.2~3.5MHz)
140Ωmax. (Fundamental : 3.5~3.8MHz)
120Ωmax. (Fundamental : 3.8~4.2MHz)
100Ωmax. (Fundamental : 4.2~4.883MHz)
80Ωmax. (Fundamental : 4.883~5.2MHz)
70Ωmax. (Fundamental : 5.2~5.7MHz)
60Ωmax. (Fundamental : 5.7~6.6MHz)
55Ωmax. (Fundamental : 6.6~6.8MHz)
50Ωmax. (Fundamental : 6.8~8.3MHz)
45Ωmax. (Fundamental : 8.3~10.7MHz)
40Ωmax. (Fundamental : 10.7~12.2MHz)
35Ωmax. (Fundamental : 12.2~15MHz)
30Ωmax. (Fundamental : 15~28.63636MHz)
140Ωmax. (3rd Overtone : 26~35MHz)
100Ωmax. (3rd Overtone : 35~48MHz)
80Ωmax. (3rd Overtone : 48~75MHz)
Drive Level 500µW (Fundamental : 3.1875MHz~3.541MHz / 3rd Overtone)
50µW (Fundamental : 3.541MHz~28.63636MHz)
(Max : 1000µW)
Load Capacitance 16pF (Fundamental)
Series resonance (3rd Overtone)
Ordering Code
 
When ordering our products, specify them with an “Ordering Code”.
The above specifications are standard for this NDK product. If you require a product with specifications not given above, please contact NDK sales. AT-51CD2 Dimensions
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