OCXO - Oven Controlled Crystal Oscillator

Bomar Crystal is able to offer a full line of ultra low tolerance Oven Controlled Crystal Oscillators, OCXOs for applications where frequency tolerance and stability are critical like Satellite Radios, Sonet Clocks, Synthesizers, Instrumentation and GSM Base Stations. Available in thru hole and surface mount designs and meet the stringent testing for RoHS compliance. Frequency stability to ±10ppb with low phase noise.


  • Frequency stability to ±10ppb
  • Frequency range from 500kHz to 200.000MHz
  • High precision and high reliability
  • Extended temperature of -40o to +85oC. available
  • Available in 3.3Vdc, 5.0Vdc and 12.0Vdc
  • Available is CMOS or Sine Wave
  • Sizes from 14.3 x 9.3 mm to 50 x 50 mm
  • Custom designs available, call with requirements.
  • All Products meet the European Union Initiative (RoHS) for Lead (Pb) free content and requirements for re-flow profiling using lead-free solder.
Output Wave Form  CMOS or Sine Wave 
Frequency Range  500kHz - 200.000 MHz
Standard Frequencies (partial list)  8.192, 10.000, 15.360, 16.000, 16.384, 19.440, 20.000 MHz
Type of Crystal Cut  AT-cut
Supply Voltage  +3.3 Vdc
+5.0 Vdc
+12.0 Vdc
Initial Frequency Accuracy (at +25oC)  ±2ppm at time of shipment.  With EFC at +2.5V ±0.5V
Frequency Stability      vs Operating Temperature Range (referenced to +25oC) ±10ppb over 0oC to +50oC
±50ppb over -20oC to +70oC
±50ppb over -30oC to +75oC
±50ppb over -40oC to +85oC.
Custom spec. on request
vs Aging / 1 day 2ppb max. after 72 hours of operation
vs Aging / first year ±300ppb max. after 72 hours of operation
vs Aging / year (2nd year and on) ±300ppb max. 
vs 5% Supply Voltage Change ±10ppb max. 
vs 5% Load Change  ±10 ppb max. 
Electronic Frequency Tuning (EC)    Tuning Range ±3 ppm min. 
Control Voltage Range 3.3 (0-3.3V), 5.0V, 12V(0-5.0V) 
Linearity ±10% 
Transfer Function Positive 
Warm up time (at +25oC)   3 minutes max. (to ±100ppb of the nominal frequency) 
HCMOS Square Wave      VOH:Logic High    "1" 4.5 VDC min. for Vcc=+12V or +5.0V, 15pF load
VOL:Logic Low    "0"  0.5 VDC max. for Vcc=+12V or +5.0V, 15pF load 
Duty Cycle 45% to 55%  
Rise Time and Fall Time 6nS  max.
Load 15 pF, 50pF max.
Sine Wave  Output 7 dBm min.
Load 50 ohms


Contact Us

Bomar Crystal Company
200 B Wood Ave
PO Box 10
Middlesex, NJ 08846

+ 1 (732) 356-7787
+ 1 (800) 526-3935
FAX: + 1 (732) 356-7362
FAX: + 1 (800) 777-2197

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