Low Power 32.768kHz SM Oscillator

  • Ultra low power consumption
  • Ceramic package with metal lid
  • Tight frequency tolerance
  • Industrial and extended temperature ranges
  • High shock and vibration resistance
Configurable Options
ParameterOption Code
Calibration tolerance
Operating temperature range
Quantity / Special Request

Please specify the quantity you require below.

The OM7604C7 is supplied on tape and reel. 1k or 3k pcs per reel are the standard T&R pack sizes for this product. Partial quantities may be supplied on tape (no reel), or in bulk.

Product Description

The ultra-miniature 32.768kHz oscillator OM7604C7 has a 3.2 x 1.5 x 0.7mm ceramic package with metal lid, and is operable from 1.2-5.5V, featuring tight calibration tolerance and ultra-low current consumption of 0.3μA typical.

The OM7604C7 has ±20ppm calibration tolerance, with other values available on request and also features low ageing characteristics of just ±3ppm first year maximum at 25°C.

Available with AEC-Q200 qualification upon request, the OM7604C7 also features good shock and vibration resistance and is available over extended -40 to +125°C operating temperature range.

Frequency 32.768kHz
Dimensions 3.2 x 1.5 x 0.7mm
Turnover temperature (T0) +25°C ±5°C
Frequency / temp coefficient -0.035ppm/°C2 ±10%
Storage temperature range -55 to +125°C
Supply voltage (VDD) Operable from 1.2 ~ 5.5V
Supply current (backup mode)  0.3μA typ, 0.5μA max 
(VDD 3.0V, output disabled)
Logic levels '0' level = 0.4V max
'1' level = VDD - 0.4V min
Driving ability 10pF CMOS
Voltage coefficient ±1.5ppm/V max
Rise / fall time 70ns typ, 100ns max
Start up time 400ms typ, 800ms max
Enable / disable function Control via pad 3
Ageing ±3ppm max first year @ 25°C 
Shock resistance ±5ppm, 5,000g, 0.3ms ½-sine 
Vibration resistance ±5ppm, 20g rms 10.0 ~ 2,000Hz 
Soldering condition Reflow, 260°C, 20 sec max                                    
Net mass 10.6mg
Package Drawing
Ordering Information

To request a quotation for the OM7604C7 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

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.

Enable / Disable Function
Input (pad 3)Output (pad 1)
'1' level Enabled
'0' level Disabled

Note: Pad 3 should not be allowed to float

Tape & Reel Specification
Tape and Reel specifications for the GTXO-C77V

A:178 / B:12 / C:3.5 / D:1.8 / E:4 / F:0.9 / G:61 / H:21

Handling & Storage

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

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


Ceramic base and metal lid


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

Block Diagram
Block Diagram