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A crystal unit, ideally suited for the clock signal generating source of the CPUs for power trains and safety control devices, requiring extremity high reliability as part of an automobile’s electronics system.
  • Highly reliable under severe environmental conditions in terms of stable start-up characteristics, heat and heat-cycle resistance and vibration resistance.
  • A surface-mount crystal unit that due to the resin seating attached to the AT-51 type crystal unit maintains high-level electrical characteristics and reliability.
  • AT-51AD meets the requirements for re-flow profiling using lead-free solder
 AT-51AD Picture
RoHS compliant Pb free
Frequency(MHz)
Overtone Order Fundamental
Frequency Tolerance (at 25±3°C) ±50×10-6
Temperature Characteristics (refer to 25°C) ±150×10-6
Operating Temperature Range -40~+125°C
Equivalent Series Resistance 150Ωmax. (4~4.5MHz)
120Ωmax. (4.5~6MHz)
80Ωmax. (6~8MHz)
70Ωmax. (8~10MHz)
50Ωmax. (10~25MHz)
Drive Level 50µW (Max : 1000µW)
Load Capacitance 16pF
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-51AD Dimensions
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