Low Power Series

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Low Power Series

Low-Power Crystal Oscillators for Extended Battery Lifespan

FCom low-power oscillators support always-on 32.768 kHz timing and low-voltage MHz clock generation for battery-powered and duty-cycled systems. Select by input current, supply voltage, and package size.

Power Consumption Levels Across the Series

Ultra-Low-Current 32.768 kHz XO

1.4 μA to 1.8 μA

Micro-ampere tier for non-stop sleep/wake timers

Low-Voltage MHz XO

0.9 mA to 3.0 mA

From 0.9 mA for low-voltage MHz clocking

Standard XO Reference

7.0 mA to 15.0 mA

Typical active current varies by frequency, supply voltage and output load.

Power Performance Checked Before Shipment

Each low-power oscillator is electrically verified against the applicable current-consumption and frequency limits before shipment.

*Additional screening and test documentation are available according to project requirements.

Power Is More Than One Number

Effective low-power clock design requires balancing current consumption with startup behavior, voltage, output load and operating mode.

Active Current

Standby Current

Startup Time

Supply Voltage

Output Load

Low Power Series

Key specifications at a glance. Download the full datasheet for detailed electrical and mechanical parameters.

Picture	Series	Package	Frequency Range	Supply Voltage	Tightest Stability	Widest Temp. Range	Output	Input Current	Mounting Type	Contact
32.768 kHz Low-Current XO
	FCO-6K-UC	2016 4-SMD	32.768 kHz	1.5 V, 1.8 V	±20 ppm	-40 to +105℃	CMOS	1.4 - 1.8 μA	SMD	Inquiry
	FCO-2K-UC	2520 4-SMD	32.768 kHz	1.5 V, 1.8 V	±20 ppm	-40 to +105℃	CMOS	1.4 - 1.8 μA	SMD	Inquiry
View All Crystal Oscillators products
Low-Voltage MHz XO
	FCO-2C-UP	2520 4-SMD	1 - 50 MHz	0.9 V, 1.2 V, 1.5 V	±25 ppm	-40 to +85℃	CMOS	0.9 - 3 mA	SMD	Inquiry
	FCO-3C-UP	3225 4-SMD	1 - 50 MHz	0.9 V, 1.2 V, 1.5 V	±25 ppm	-40 to +85℃	CMOS	0.9 - 3 mA	SMD	Inquiry
View All Crystal Oscillators products

For complete mechanical drawings and ordering codes, contact to download the product catalog.

Technical Applications

Applications where every microamp affects operating life, battery size and maintenance intervals.

Need help selecting the right power grade?

Contact our engineers

Wireless Utility Metering

Design Challenge

Keeping time, scheduled wake-ups in a wireless meter’s power budget.

Recommended Solution

Use a low-current 32.768 kHz CMOS XO where the RTC accepts an external clock.

Key Parameters

Active Current
Supply Voltage
Frequency Stability
Operating Temperature
Package Size

View Application Guide (PDF) →

IoT Telemetry Nodes

Design Challenge

Reducing clock energy across sleep, sensing and wireless-reporting cycles.

Recommended Solution

Match a low-power MHz XO to the MCU input, startup time and reporting cycle.

Key Parameters

Active Current
Enable / Shutdown Behavior
Startup Time
Supply Voltage
Output Load

View Application Guide (PDF) →

Wearables & Portable Health Devices

Design Challenge

Keeping an always-on timebase within tight power and board-space limits.

Recommended Solution

Use a compact, low-current 32.768 kHz CMOS XO for a compatible RTC input.

Key Parameters

Active Current
Package Size
Supply Voltage
Frequency Stability
Startup Time

View Application Guide (PDF) →

Asset Tracking

Design Challenge

Keeping time and scheduling wake-ups between location reports.

Recommended Solution

Match a low-current 32.768 kHz XO to the RTC input and wake-up schedule.

Key Parameters

Active Current
Frequency Stability
Supply Voltage
Startup Time
Operating Temperature

View Application Guide (PDF) →

Find the Right Low-Power Oscillator

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TECHNICAL RESOURCES

Download the Product Catalogue

Review electrical specifications, package drawings and ordering information for available oscillator series.

Download Low Power Series Guide

ENGINEERING SUPPORT

Need a Lower-Power Configuration?

Send us your target frequency, supply voltage, current budget, operating temperature and package requirements for engineering review.

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