HCD 46x36x15 OCXO


Low Frequency OCXO with CMOS Output

  • CMOS / TTL compatible output
  • Low profile package
  • Separate oven & oscillator supplies
Configurable Options
ParameterOption Code
Ageing per day (at despatch)
Temperature stability
Operating temperature range
Oven supply voltage
Quantity / Special Request

Please specify the quantity you require below.

The HCD181 is supplied in boxes. 6 pcs per box is the maximum box size for this product.

Product Description

A unique internal divider design allows the HCD181 to provide CMOS output at low frequencies with good phase noise specifications and tight temperature stability.

Although no longer recommended for new designs unless a low frequency is required, the HCD181 does provide separate 12.0V oven and oscillator voltage supplies.

If your design calls for higher frequencies please consider the HCD300 series.

Frequency range 30.0kHz ~ 5.0MHz
Dimensions 46.0 x 36.2 x 15.5mm
Frequency stability ±5x10-7 / year max
±1x10-7 per 5% change in VDD
Storage temperature range -40 to +90°C
Output waveform CMOS / TTL compatible
Frequency adjustment ±2x10-5 typ, +0.5 to +5.0V
(sufficient for 10 years ageing min)
Oscillator supply voltage (VDD) +5.0V (±0.5V)
Oscillator power consumption 40mA max
Oven 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
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 and pad configuration drawing for the Golledge HCD 46x36 OCXO showing full dimensions.
Ordering Information

To request a quotation for the HCD181 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