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221 Series OCXO


The 221 Series surface mount oven controlled quartz crystal oscillator (OCXO) is available with an AT or SC cut crystal, in a hermetically sealed package that measures only 0.975"L x 0.800"W x 0.500"H (24.8 x 20.3 x 12.7mm). This series performs to Stratum III, IIIe standards. It is ideal for applications requiring low power consumption and space restrictive environments. The 220 Series OCXO offers a thermal stability of 2.0E-08 over a 100oC temperature range, warms up in less than 5 minutes and consumes less than 1.0W at +25oC. Phase noise @ 1Hz offset is -95dBc/Hz with a noise floor of -155dBc/Hz.

Design Note: Base models can be customized to your specifications within the performance ranges shown below.


  • Stratum III, IIIe
  • Low Phase Noise
  • Compact Package
  • Hermetically Sealed
  • High Reliability
  • Surface Mount
  • Available on Tape and Reel


  • GPS Receivers
  • Instrumentation, PC, VXI/VME
  • V-SAT Terminals
  • Rack Mounted Applications
  • Cellular Paging Base Stations
Typical Performance
Parameters Available Range
Frequency: 4.8 MHz to 100 MHz
Thermal Stability: 5.00E-09 to 5.00E-07
Operating Temperature: -55oC to +85oC
0 to +9dBm Sine
Supply Voltage: +3.3 to +15V (DC)
Tuning Voltage: +0 to +10V (DC)

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