Suntsu Electronics has designed custom TXCOs and OCXOs specially for Stratum 3 and Stratum 3E. Stratum 3 TCXOs come in in small, ceramic SMD package delivered via Tape and reel. The Stratum 3 clock serves to track input under normal operating conditions, but at a wider range than Stratum 2. Stratum 3E OCXOs have been optimized for IEEE-1855v2 timing applications such as network synchronization clocks, coherent optic clocks, and jitter cleaners.
Stratum 3/3E Oscillator
| Part Number | Image | Package | Voltage(s) | Output Level | Key Features | Datasheet |
|---|---|---|---|---|---|---|
| STX478 |  | 7.0X5.0X2.2 | 3.3V | HCMOS, 15pF | 12.8MHz, Stratum 3, +/-0.28ppm, SMD package |  |
| STX479 |  | 7.0X5.0X2.2 | 3.3V | HCMOS, 15pF | 12.8MHz, Stratum 3, +/-0.14ppm, SMD package | |
| SJX239 |  | 25.4X22.0X12.1 | 3.3V | HCMOS, 15pF | 12.8MHz, Stratum 3E, +/-0.01ppm, SMD package | |
| SJX240 |  | 25.4X22.0X12.1 | 3.3V | LVTTL, 15pF | 10MHz, Stratum 3E, +/-0.005ppm, SMD package | |
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