Precision Frequency Control & Timing Devices for Continuous Reliability.

FCom delivers crystal resonators, oscillators, TCXOs, OCXOs, SAW components, and crystal filters. Each product is engineered from the crystal cut angle for performance that holds over time.

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< 0.05ps Jitter

Precise timing for high-speed network designs.

Stratum 3 Holdover

Long-term synchronization in critical infrastructure.

-55℃ to 150℃ Range

Stable timing for telecom and industrial automation.

Precision Frequency Control portfolio

Explore FCom crystal resonators, oscillators, TCXOs, OCXOs, VCXOs,

SAW components, and crystal filters for stable timing in demanding systems.

Crystal Oscillators

Clock oscillators from 13.7 kHz to 1.5 GHz, with 50 fs low-jitter options for stable industrial and digital timing.

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TCXOs

Temperature-compensated crystal oscillators with ±50 ppb options support for GNSS, 5G, and network sync.

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OCXOs

Oven-controlled crystal oscillators with low-noise options to -162 dBc/Hz @10 kHz for critical timing.

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VCXOs

Voltage-controlled crystal oscillators with ±50 ppm to ±150 ppm pullability for PLL and sync systems.

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Quartz Crystal Resonators

SMD and through-hole crystals with ±5 ppm tolerance options, 4 pF low-CL designs for MCU and RF clocking.

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Tuning Fork Crystals

32.768 kHz tuning fork crystals with ±5 ppm options, 3 pF low-CL designs, and -40°C to +125°C support.

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SAW Filters

RF and IF SAW filters from 110 MHz to 3.55 GHz, with low loss from 0.6 dB and attenuation up to 70 dB.

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SAW Resonators

Compact SAW resonators from 154 MHz to 1 GHz, with 1 dB insertion loss for RF reference designs.

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Crystal Filters

Narrowband IF crystal filters from 7.8 MHz to 60 MHz, with 1.5–15 kHz bandwidth and up to 70 dB attenuation.

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Parametric Search

We engineer the cut and angle in-house. For quartz, oscillators, and SAW devices. Since 2007.

Frequency Control Designed From The Crystal, Not Just Assembled.

You’ve sourced frequency parts before. Most brands assemble from the same supplier pool, which leaves you chasing a cut you didn’t design. FCom designs the crystal cut in-house — phase noise, aging, and temperature curve are ours to engineer, not inherited.

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Designed for Timing Stability in Critical Applications

Precision timing needs to hold across very different systems. FCom matches stability, temperature, phase noise, and footprint to what each use case needs.

Trusted in Global Production

FCom components are qualified in active production programs at these organizations.

Three Additional Measures Make Your System More Stable

As crystal oscillator manufacturers defined by uncompromising consistency and stability, we secure your hardware lifecycle through strict material sourcing, precision automated assembly, and comprehensive environmental testing.

A-Grade Material Foundation

Materials from Kyocera, NGK, Heraeus, and Nisshinbo set our performance baseline. Every lot is strictly inspected to remove risks before assembly.

Precision Japanese Automation

Running on state-of-the-art Japanese production lines, our automated dispensing and sealing execute with strict mechanical precision to secure lot-to-lot consistency across millions of units.

100% Parameter Validation

Most manufacturers test frequency, ESR, appearance — and stop there. FCom tests every parameter on the datasheet, including drive-level dependence and aging. Units often ship with margin above spec.