Anticipating the Market’s Needs, One Step Ahead

River Eletec’s strength lies in its continuous pursuit of technological innovation. Rather than simply responding to predefined requirements, the company anticipates shifts in technology and market needs and proactively refines its technical capabilities and products. Through this forward-looking approach, River Eletec works closely with customers to transform conceptual ideas and “what-if” possibilities into practical, reliable technologies.
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Fundamental-Mode
High Frequency

625 MHz
KCRO-05
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Ultra-Low Jitter

12 femtoseconds
KCRO-05
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Low Power
Consumption

0.01 mA
FCXO-05D
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Compact Form Factor

1210 size
TFX-05X, FCX-08
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Stable Supply
Capability

Made-in-Japan Quality

Advancing the Frontiers of Frequency Generation Technology.Delivering the Performance and Supply Capacity to Power the AI Data Center Era.

Products

KCRO-05

An ultra-low-jitter clock solution for AI data centers, supporting ultra-high-speed communications such as 1.6T optical transceivers.

Learn More
KCRO-05-l2

Connect with RIVER

Contact us to discuss your timing and design challenges.
Our engineers are ready to support your next project.

Evaluation Board Consultation
Request a Sample
Contact Us

Industries and Applications We Serve

Discover how River Eletec’s timing solutions are applied across key industries—from mobile and automotive to AI data
centers and medical devices.
AI_Data_Centers AI Data Centers

AI Data Centers
Mobile_image AI Data Centers

Mobile
Automotive_image AI Data Centers

Automotive
Communications-Enterprise_image AI Data Centers

Communications &
Enterprise
Medical-Healthcare_image AI Data Centers

Medical &
Healthcare
Industrial_image AI Data Centers

Industrial
Consumer_image AI Data Centers

Consumer
Precision_Timing_Solutions_image AI Data Centers

Precision Timing
Solutions
Browse Industries

Solutions & Product Categories

Contact us with your toughest timing challenges. We will craft an optimal solution.

Automotive-Grade Reliability for Harsh Environments

We offer a lineup of highly reliable products compliant with AEC-Q200, designed to withstand the severe temperature environments (-40°C to +125°C and beyond) and vibration conditions required for autonomous driving, ADAS, and vehicle electrification.
Optimized for automotive applications, the following products ensure stable frequency characteristics even under extreme temperature cycling and vibration.
Featured Products
MHz Crystal Unit : FCX-07L
kHz Crystal Unit : TFX-03

Low-Jitter Crystal Oscillators for 312.5MHz–1GHz

Phase Noise: −165 dBc/Hz typ. @ 1 MHz offset
A clean clock signal improves the system signal-to-noise ratio and allows designs to achieve their full performance potential.
In addition to excellent jitter performance, our low-noise design minimizes noise from close-in phase noise to the wideband region, delivering a high-quality clock signal.
Featured Products
High-Frequency Differential Output Crystal Oscillator : KCRO-05

Low Phase-Noise Oscillators for Maximum System Performance

Phase noise: −165 dBc/Hz typ. @1 MHz offset
Clean clock signals improve system signal-to-noise ratio, enabling designers to fully unlock the performance potential of their systems.
Featured Products
MHz Oscillator : FCXO-05E (@1 kHz offset)
High-Frequency Oscillator : KCRO-05 (@625 MHz)

World-Class Ultra-Compact, Low-Profile Crystal Devices

Industry-leading ultra-compact, ultra-low-profile package.
Ideal for space-constrained designs such as wearables, medical devices, and card-type electronics.
Supporting next-generation devices including patch-type medical equipment, hearing aids, smartwatches, smartphones, and thin modules, these crystal devices enable both miniaturization and high performance.
Featured Products
Ultra-Compact MHz Crystal Unit : FCX-08
Ultra-Compact kHz Crystal Unit : TFX-05X

High-Accuracy Crystal Devices for Long-Term Stable Operation

Designed for advanced communication systems, infrastructure equipment, and applications requiring long-term operation with minimal maintenance.
These crystal devices provide high stability in initial accuracy, temperature characteristics, and long-term aging performance, making them ideal for industrial systems requiring precise timing and long-term reliability.
Featured Products
MHz Crystal Unit : FCX-07L
kHz Crystal Unit : TFX-03

Low-Power Crystal Oscillators for Battery-Powered Systems

Designed for battery-powered IoT devices and smart meters, these crystal oscillators feature ultra-low power consumption with minimized drive current.
Featured Products
MHz Oscillator : FCXO-07F
kHz Oscillator : FCXO-05D

Low-ESR Crystal Units for Stable Oscillation

Improves oscillator circuit stability, reduces power consumption, and shortens start-up time.
We offer low-ESR, high-Q crystal units designed for reliable oscillator operation.
These devices provide greater oscillation margin when matched with IC oscillator circuits, enabling stable system design.
Featured Products
MHz Crystal Unit : FCX-05
kHz Crystal Unit : TFX-03C

Shock- and Vibration-Resistant Crystal Units

Ideal for industrial drones, construction equipment, and robotics.
 These crystal units minimize frequency variation and device failure caused by mechanical stress.
They ensure stable clock generation even in systems exposed to strong vibration and external shock.
Featured Products
MHz Crystal Unit : FCX-07L
kHz Crystal Unit : TFX-04

High-Temperature Crystal Oscillators up to 200°C

Designed for aerospace, geothermal power generation, and oil exploration.
These oscillators use specialized sealing technology that maintains functionality in extreme high-temperature environments.
They enable reliable operation in ultra-high-temperature conditions beyond the limits of standard electronic components.
Featured Products
High-Temperature MHz Oscillator : GTXO-04

Custom-Frequency Crystal Units

We offer flexible development and manufacturing for custom frequencies.
Even specifications that other suppliers may reject can be discussed with our engineering team.
With extensive manufacturing expertise, we support custom frequency designs across a wide frequency range.
Featured Products
MHz Crystal Unit : FCX-07L

Short Lead Time for Samples and Production Orders

From same-day sample shipment to rapid response for sudden volume increases, we support the speed of your business.
For standard products in stock, we maintain fast delivery capabilities, supported by efficient logistics and production management.
Featured Products
: Check Stock Availability
: Request Production Lead Times

Cost-Effective Crystal Devices with Stable Supply Features

Optimize cost while maintaining reliable quality.
Our core product lineup supports long-term supply, helping reduce supply chain risk.
We recommend the most suitable part numbers based on mass production advantages, and our long-term supply commitment supports your product lifecycle.
Featured Products
MHz Crystal Unit : FCX-07L
MHz Oscillator : FCXO-05
kHz Crystal Unit: : TFX-03

Discuss Specialized Uses of Crystal Devices

We support applications beyond oscillators, including crystal sensors and QCM devices.
Our engineering team provides specialized technical expertise and consultation.
From micro-mass measurement to gas detection, we help create new applications by leveraging the piezoelectric properties of quartz.
Featured Products
: Request a Technical Consultation

Advice on Crystal Device Selection and Circuit Design

Not sure which part number to choose or concerned about oscillator circuit matching?
Our experienced engineers provide direct support for device selection and circuit design.
We also offer circuit analysis and matching report services, supporting your development from the early design stage.

High-Reliability Crystal Devices for Industrial and Infrastructure Applications

Designed for social infrastructure and industrial equipment requiring long-term operation.
These crystal devices offer high reliability and resistance to degradation even under demanding conditions.
Manufactured under strict quality control processes, they ensure stable performance over extended operating periods.
Featured Products
High-Reliability MHz Crystal Unit : FCX-07L
High-Reliability kHz Crystal Unit : TFX-04
View All Solutions

Ready to move your project forward?
Contact River Eletec for expert technical support.

Evaluation Board Consultation
Request a Sample
Contact Us