Golledge 36.0 x 27.0 x 15.0mm OCXO


12V Low Profile OCXO with CMOS/TTL Output

  • Temperature stability down to 50ppb
  • Low profile compact package
  • Single oven & oscillator supply
  • 12V supply standard, 15V or 18V optional
  • Standard European IEC CO-08 pin-out
Configurable Options
ParameterOption Code
Ageing per day (at despatch)
Temperature stability
Operating temperature range
Supply voltage (VDD)
Quantity / Special Request

Please specify the quantity you require below.

The HCD311 is supplied in boxes. 10 pcs per box is the maximum box size for this product.

Product Description

Offers tight temperature stability as good as ±50ppb, the HCD311 oven controlled oscillator with CMOS output features low profile 36 x 27 x 15mm package with standard European output.

This OCXO also features low phase noise specifications, with 10.0MHz performance including phase noise of -150dBc/Hz @ 10kHz and is available with single 12V oven and oscillator supply at frequencies of 5.0 ~ 50.0MHz.

Frequency range 5.0 ~ 50.0MHz
Dimensions 36.1 x 27.2 x 15.0mm
Frequency stability ±5x10-7 per year
±1x10-7 per 5% change in VDD
Storage temperature range -40 to +90°C
Output waveform CMOS / TTL compatible
Frequency adjustment ±1x10-5 typ (10MHz), +0.5 to +6.0V
(sufficient for 10 years ageing min)
Stabilised +6.0V supply provided
Power consumption 4.5W max at switch on
1.0W typ when stabilised at 25°C
Warm up ±5x10-8 after 10mins at +25°C
Phase noise (@ 10.0MHz) < -110dBc/Hz @ 10Hz
< -130dBc/Hz @ 100Hz
< -145dBc/Hz @ 1kHz
< -150dBc/Hz @ 10kHz
< -150dBc/Hz @ 50kHz
Shock (IEC 68-2-27 Test Ea) 50g for 11ms
Vibration (IEC 68-2-06 Test Fc) 10-55Hz, 1.5mm. 55-500Hz, 10g
Package Drawing
Package footprint drawing for the Golledge HCD300 series pcb mount OCXO.
Ordering Information

To request a quotation for the HCD311 please use the configurable options form to choose the options you require and then submit your configured product to our team. Our expert advisers are always happy to help with your requirements and can be contacted on +44 1460 256 100 or at sales@golledge.com.

Following product selection you will be issued with a seven character Golledge part number. Your Golledge part number is the internationally accepted Golledge manufacturing part number (MPN) that should be used for all project documentation, including bills of materials (BoMs) and purchase orders.

If you have any queries regarding any of our documentation our dedicated sales team will be happy to help.

CAD Models

Our HCD311 is included in the following design libraries. Click to download the library of your choice.

Handling & Storage

ESD-HBM-1A Human Body Model (HBM) 1A (250V to <500V)

MSL1 Moisture Sensitivity Level (MSL): 1 (or not applicable)


Solder sealed metal can


PbFree Lead-free (< 0.1% by weight )

RoHS compliant with no exemptions RoHS compliant with no exemptions. See our declaration

REACH REACH compliant. See our statement

Conflict Minerals Statement Free of conflict minerals. See our declaration

Halogen Free Statement Free of Halogens. See our declaration

Ozone Depletion Statement Free of Ozone-depleting substances. See our declaration