Golledge HCD 15mm OCXO


12V Tight Stability OCXO with Sine Output and Low Profile

  • Low height compact package
  • Temperature stability down to 5ppb
  • Single 12V supply (15V or 18V optional)
  • Standard European IEC CO-08 pin-out
  • Custom options available
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 HCD370 is supplied in boxes. 10 pcs per box is the maximum box size for this product.

Product Description

The HCD370 oven controlled oscillator with sine wave output features exceptionally tight temperature stability of ±5ppb and excellent ageing characteristics, with options of <±2 x 10-10 per day at dispatch.

The HCD370 also features low profile package with height of 16mm, and low phase noise characteristics. Available at frequencies of 5.0 ~ 20.0MHz, this oven controlled oscillator is available with 12.0V single oven and oscillator supply, with 15.0V or 18.0V also available on request.

Frequency range 5.0 ~ 20.0MHz
Dimensions 36.1 x 27.2 x 15.5mm
Frequency stability < 5x10-8 per year
< 1x10-9 per 10% change in VDD
Storage temperature range -40 to +90°C
Output waveform Sine wave, 7dBm (±2dBm) into 50Ω
Frequency adjustment ±5x10-7 (typ) over +0.5 to +7.0V
(sufficient for 10 years ageing min)
Stabilised +7.0V supply provided
Power consumption 5.0W max at switch on
1.2W typ when stabilised at 25°C
Warm up < 1x10-8 after 10mins at +20°C
Allan deviation (ADEV), 1 sec < 1x10-12 (10.0MHz)
Phase noise (@ 10.0MHz) < -95 dBc/Hz @ 1Hz
< -130 dBc/Hz @ 10Hz
< -140 dBc/Hz @ 100Hz
< -150 dBc/Hz @ 1kHz
< -155 dBc/Hz @ 10kHz
< -155 dBc/Hz @ 100kHz
Harmonics < -30dB wrt carrier
Package Drawing
Package footprint and pad configuration drawing for the Golledge HCD300 series OCXOs showing full dimensions.
Ordering Information

To request a quotation for the HCD370 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.

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