119 to 137 MHz, Wide Temperature Oscillator


The SiT8921B is the most robust and reliable high-frequency oscillator on the market with 0.1 ppb/g vibration sensitivity (g-sensitivity), 50,000 g shock and 70 g vibration resistance and 500 million hour MTBF. This device delivers a perfect combination of high frequency (up to 137 MHz), best stability (±20 ppm), military temperature (-55 °C to 125 °C) and smallest package (2.0 x 1.6 mm) that are not available from quartz.

For the same device in a SOT23-5 package, refer to the SiT2021B.

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Five industry standard footprints as small as 2016 for all frequencies, voltages, and stabilities
"Specs" "Value"
Oscillator Type XO-SE
Frequency 119 to 137 MHz
Frequency Stability (ppm) ±20, ±25, ±50
Phase Jitter (rms) 1.3 ps
Output Type LVCMOS
Operating Temperature Range (°C) -55 to +125
FlexEdgeTM Rise/Fall Time Yes
Voltage Supply (V) 1.8, 2.5 to 3.3
Package Type (mm²) 2.0x1.6, 2.5x2.0, 3.2x2.5, 5.0x3.2, 7.0x5.0
Features Field programmable, Military temperature -55 to 125°C
Availability Production

Unique combination of

  • high frequency (119 to 137 MHz)
  • ±20 ppm
  • military temperature range (-55 to 125 °C)
  • smallest package (2.0 x 1.6 mm x mm)
    • Best-in-class stability and temp. range for space-constrained environments

0.1 ppb/g low g-sensitivity

  • No performance degradation in harsh environments

50,000 g shock and 70 g vibration

  • Indestructible

FlexEdge™ rise/fall time

  • Optimize EMI to reduce interference to other systems

Ultra-fast lead time (4 to 6 weeks)

  • Reduce inventory overhead
  • Mitigate shortage risks


  • Oil exploration drilling
  • Power amplifiers
  • Industrial motors
  • Pressure meters
  • Aerospace equipment
  • Geothermal energy equipment

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