OCXO (Oven Controlled Crystal Oscillator)

Bomar Crystal is able to offer a full line of ultra low tolerance Oven Controlled Crystal Oscillators, OCXO’s for applications where frequency tolerance and stability is 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. Tolerance to 0.1PPM with low Phase Noise.


  • Tolerance to 0.1PPM
  • Frequency range from 1.00MHz to 200MHz
  • High precision and high reliability
  • Extended Temperature of -40+85C option
  • 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  OCXO's are available in either CMOS or Sine Wave 
Frequency Range  1.0 MHz - 200 MHz
Standard Frequencies (partial list)  8.192, 10.0, 15.36, 16.000, 16.384, 19.440, 20.0 MHz
Type of Crystal Cut  AT-cut
Supply Voltage (Vcc)  +3.3 VDC
+5.0 VDC
+12.0 VDC
Initial Frequency Accuracy (at +25oC)  ±2 ppm at time of shipment.  With EFC at +2.5V ±0.5V
Frequency Stability      vs Operating Temperature Range (referenced to +25oC) ±.05 ppm (0.1 ppm peak to peak) over 0oC to +50oC; or
±.1 ppm (0.2 ppm peak to peak) over -20oC to +70oC; or
±.1 ppm (0.2 ppm peak to peak) over -30oC to +75oC; or
±.1 ppm (0.2 ppm peak to peak) over -40oC to +85oC.
Custom spec. on request
vs Aging / 1 day 2 ppb max. after 72 hours of operation
vs Aging / first year ±300 ppb max. after 72 hours of operation
vs Aging / year (2nd year and on) ±300 ppb max. 
vs 5% Supply Voltage Change +10 ppb 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% - 55% measured at (V... - VOL)/2 
Rise Time and Fall Time 6 n sec. max. (90% 10% Vcc)
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

Thru-Hole OCXO

4 pins


oven controlled crystal oscillators

50x50mm OCXO


25x25mm OCXO

supply ground