115 to 137 MHz, Extended Temperature (-55 °C to 125 °C) SOT-23 Oscillator
The Endura™ SiT2045 is the most reliable and the highest quality SOT23 oscillator for high-reliability aerospace and defense applications. This device delivers the perfect combination of high-frequency range (up to 137 MHz), excellent stability (±20 ppm), and wide temperature range (-55 to 125°C). Engineered for harsh environments, this oscillator features ultra-low 0.1 ppb/g acceleration sensitivity, 10,000g shock, and 70g vibration resistance. The small SOT23-5 package offers the best board-level solder joint reliability and easy optical-only, board-level inspection of solder joints.
The MEMS-based Endura Si2025 conforms to MIL-PRF-55310 and MIL-STD-883 specifications.
View related products: 1 to 110 MHz | QFN package | Ruggedized XO lineup
| Oscillator Type | XO-SE |
| Frequency | 115 to 137 MHz |
| Frequency Stability (ppm) | ±20, ±25, ±50 |
| Phase Jitter (rms) | 1.3 ps |
| Output Type | LVCMOS |
| Operating Temperature Range (°C) | -40 to 105 (Grade 2), -40 to 125 (Grade 1), -55 to 125 (Ext. Cold Grade 1) |
| FlexEdgeTM Rise/Fall Time | Yes |
| Voltage Supply (V) | 1.8, 2.5 to 3.3 |
| Package Type (mm²) | SOT23 (2.9x2.8) |
| Features | Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883, AEC-Q100, SOT23-5 |
| Availability | Production |
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Leaded SOT23 package for best board-level reliability, inspection, and manufacturability
Unique combination of
- Up to 137 MHz
- ±25 ppm
- -55 to +125°C
- Best-in-class stability over extreme temperature range ideal for high-rel applications
Low 0.1 ppb/g low g-sensitivity
- No degradation of performance in harsh environments
70g vibration and 10,000g shock
- Virtually indestructible
Configurable rise/fall time
- Optimize EMI to reduce interference to any subsystems
SOT23-5 package
- Best board-level solder joint reliability
- Easy, optical-only, board-level inspection of solder joints
Ultra-fast lead time (4 to 6 weeks)
- Reduce inventory overhead
- Mitigate shortage risks
- Airborne communications
- Field communications
- Vehicle comms/telemetry
- Avionics
- All ruggedized applications
| Document Name | Type |
|---|---|
| Electronics Industry Citizen Coalition Template | Other Quality Documents |
| Manufacturing Notes for SiTime Products | Other Quality Documents |
| SiTime Conflict Minerals Policy | Other Quality Documents |
| SiTime Environmental Policy | Other Quality Documents |
| SiTime Warranty on Date Code | Other Quality Documents |
| ISO9001:2015 Certificate of Registration | Other Quality Documents |
| Conflict Minerals Reporting Template | Other Quality Documents |
Frequency Slope (dF/dT) Calculator – Calculate frequency slope over temperature
Reliability Calculator – Get FIT/MTBF data for various operating conditions
SOT 23 5-Pins 3D Step Model – Preview oscillator packages in 3D
