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CTS Electronic Components Model 139 Stratum 3E Low Noise OCXOs

CTS Electronic Components Model 139 Stratum 3E Low Noise Oven-Controlled Crystal Oscillators (OCXOs) are high-performance, small-size oscillators with high stability and low jitter/phase noise. These OCXOs feature a -170dBc/Hz phase noise floor, a 10MHz to 40MHz frequency range, and an operating voltage range of 3.3V or 5V. The Model 139 OCXOs are available in surface-mount or through-hole DIL packages and are compliant with Stratum 3E of GR-1244-Core. Typical applications include test and measurement, radar, telecom switching, 4G/5G base stations and active antennas, military communications, synchronous Ethernet, and Stratum 3E/SONET.

Features

  • -170dBc/Hz phase noise floor
  • Compliant to Stratum 3E of GR-1244-Core
  • CMOS output
  • 10ppb frequency stability (pk-to-pk)
  • 10MHz to 40MHz frequency range
  • Surface mount or thru-hole DIL package
  • 3.3V or 5V operating supply voltage (Vcc)
  • Low phase noise
  • -40 to 85°C operating temperature range
  • Tape and reel packaging (SMD)

Applications

  • Test and measurement
  • Radar
  • Telecom switching
  • 4G/5G base stations and active antennas
  • Military communications
  • Synchronous Ethernet
  • Stratum 3E/SONET

Typical Stratum 3E Wander Generation performance per Telcordia GR-1244-CORE

Performance Graph - CTS Electronic Components Model 139 Stratum 3E Low Noise OCXOs

Additional Resource

Published: 2026-01-13 | Updated: 2026-01-27