119 to 137 MHz, Wide Temperature (-55 to +125°C) SOT23 Oscillator

The SiT2021B oscillator comes in a SOT23 package for the best board-level solder joint reliability and low-cost, optical-ONLY board-level inspection. This device features a wide frequency range, excellent stability, and the shortest lead time for industrial, medical, automotive, avionics, and other high-temperature applications. This device also features the industry's best 0.1 ppb/g vibration sensitivity, 50,000 g shock and 70 g vibration resistance.

For the same device in SMD packages, refer to the SiT8921B oscillator.

Program oscillators to get instant samples, optimized performance, and fast prototyping | Learn More

Leaded SOT23 package for best board-level reliability, inspection, and manufacturability
Oscillator Type XO-SE
Frequency 119 to 137 MHz
Frequency Stability (ppm) ±20, ±25, ±50
Operating Temperature Range (°C) -55 to +125
Output type LVCMOS
Package Type (mm²) SOT23 (2.9x2.8)
Phase Jitter (RMS) 1.3 ps
Features Field programmable, Military temperature -55 to 125°C, SOT23-5
Voltage Supply (V) 1.8, 2.5 to 3.3
FlexEdgeTM Rise/Fall Time Yes
Availability Production

Unique combination of

  • 119 to 137 MHz
  • ±20 ppm
  • -55 °C to 125 °C operating temperature:
    • Best-in-class stability over extreme temperature range for outdoor applications

0.1 ppb/g low g-sensitivity

  • No degradation of performance in harsh operating environments

70 g vibration and 50,000 g shock

  • Indestructible

FlexEdge™ rise/fall time

  • Optimize EMI to reduce interference to other subsystems

SOT23-5 package

  • Best board-level solder joint reliability
  • Easy, low-cost, optical-only, board-level inspection of solder joints

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
  • Radar
  • Avionics

Narrow By:

Narrow By:

Resource Name Type
Silicon MEMS Reliability and Resilience Presentations
Performance Comparison: Silicon MEMS Verses Quartz Oscillators Presentations
MEMS Oscillators Enhance Clock Performance in Industrial and Hi-Reliability Applications Presentations
How to Measure Clock Jitter in Precision Timing Applications Presentations
How to Measure Phase Jitter and Phase Noise in Precision Timing Applications Presentations
How to Get Instant Oscillators with SiTime's New Field Programmer Presentations
Silicon MEMS vs Quartz Supply Chain Presentations
Silicon MEMS Oscillators Provide Benefits for LED Lighting White Papers
MEMS Timing Solutions Improve Touchscreen Devices White Papers
Field Programmable Timing Solutions for Medical Applications White Papers
Ultra-robust MEMS timing solutions improve performance and reliability in meter applications White Papers
MEMS oscillators improve reliability and system performance in motor control applications White Papers
MEMS-Based Resonators and Oscillators are Now Replacing Quartz Presentations
Getting In Touch with MEMS: The Electromechanical Interface Presentations
Field Programmable Oscillators Datasheet Datasheets
SiT2021B Datasheet Datasheets
J-AN10002 シングルエンド発振器の推奨終端方法 Application Notes
AN10002 Termination Recommendations for Single-ended Oscillator Driving Single or Multiple Loads Application Notes
J-AN10006 発振器のPCBデザインのガイドライン Application Notes
AN10006 Best Design and Layout Practices Application Notes
AN10007 Clock Jitter Definitions and Measurement Methods Application Notes
J-AN10007 クロックジッタの定義と測定方法 Application Notes
SiTime発振器の信頼性計算方法 Technology Papers
AN10025 Reliability Calculations for SiTime Oscillators Application Notes
J-AN10028 プローブを使用した発振器の出力波形計測方法 Application Notes
AN10028 Probing Oscillator Output Application Notes
MEMSおよび水晶ベース発振器の電磁場感受率の比較 Technology Papers
Electromagnetic Susceptibility Comparison of MEMS and Quartz-based Oscillators Technology Papers
MEMS発振器と水晶発振器の性能比較(耐衝撃と耐振動) Technology Papers
Shock and Vibration Comparison of MEMS and Quartz-based Oscillators Technology Papers
J-AN10033 発振器の周波数測定ガイドライン Application Notes
AN10033 Frequency Measurement Guidelines for Oscillators Application Notes
シリコンMEMS発振器の耐性および信頼性 Technology Papers
Resilience and Reliability of Silicon MEMS Oscillators Technology Papers
SiTimeの MEMS First™ プロセス技術 Technology Papers
SiTime's MEMS First™ and EpiSeal™ Processes Technology Papers
The top 8 reasons to use an oscillator instead of a crystal resonator White Papers
MEMS Resonator Advantages - How MEMS Resonators Work Part 2 Presentations
How to Measure Long-term Jitter and Cycle-to-cycle Jitter in Precision Timing Applications Presentations
Silicon MEMS Oscillator Frequency Characteristics and Measurement Techniques Presentations
AN10052 IEEE 1588 Precision Time Protocol (PTP) in ITU-T Standards Application Notes
SC-AN10007 时钟抖动定义与测量方法 Application Notes
SC-AN10033 振荡器频率测量指南 Application Notes
SiTime MEMS First 工艺 Application Notes
AN10062 Phase Noise Measurement Guide for Oscillators Application Notes
Phase Noise Measurement Tutorial Videos
Phase Noise Measurement Tutorial (Download MP4 Video) Videos
PCI Express Refclk Jitter Compliance using a Phase Noise Analyzer Presentations
Advantages of MEMS Timing - Parameters (Download MP4 Video) Videos
Silicon Replaces Quartz (Chinese Subtitles) (Download MP4 Video) Videos
Silicon Replaces Quartz (Japanese Subtitles) (Download MP4 Video) Videos
SiTime MEMS Oscillators - Revolutionizing the Timing Market (Download MP4 Video) Videos
SiTime MEMS Oscillators and Clock Generators at Electronics Summit (Download MP4 Video) Videos
SiTime's Time Machine II - Part 1: How to Install Oscillator Programming Software (Download MP4 Video) Videos
SiTime's Time Machine II - Part 2: How to Program Field Programmable Oscillators (Download MP4 Video) Videos
SOT 23 5-Pins 3D Step Models
SiTime MEMS Timing Solutions (8.5x11) MEMS Timing Solution Brochures/Fliers
SiTime MEMS Timing Solutions (A4) MEMS Timing Solution Brochures/Fliers
SiTime MEMS Timing Solutions (A4) Chinese MEMS Timing Solution Brochures/Fliers
Timing Solutions for Industrial MEMS Timing Solution Brochures/Fliers