FOC-2D OCXO ±0.1 ppm 20.6mm DIP Telecom Sync
DIP 20.6×20.6mm
FEATURE
Product Description
FOC-2D OCXO — Oven Controlled Crystal Oscillator (20.6×20.6 mm)
High-precision OCXO for telecom synchronization, base stations, broadcast, and precision timing. ±0.1 ppm stability, excellent phase noise, ~2-minute warm-up.
Designed for B2B programs: engineering samples, volume production, and customization (frequency/output/temperature/testing) via RFQ.
Looking for smaller footprint? See FOC-1D. Compare technologies: TCXO vs OCXO.
Key Features
- Package: 20.6×20.6×13.2 mm DIP (through-hole)
- Frequency Range: 10–40 MHz (popular: 10.000 MHz Stratum 3 OCXO)
- Output: CMOS rectangular (5 V) — sine wave optional
- Frequency Stability: ±0.1 ppm (−30 °C to +70 °C)
- Phase Noise: −105 dBc/Hz @ 10 Hz, −150 dBc/Hz @ 10 kHz
- Aging: ±5 ppb/day, ±0.5 ppm/year
- Warm-up: ~2 minutes to ±0.1 ppm @ +25 °C
- Voltage Control (VCXO): 0–5 V tuning, positive slope (±5 ppm)
- Supply Voltage: 5.0 V ±5%
- RoHS & REACH compliant
Need even tighter stability or different form factor? Explore our OCXO portfolio.
Key Specs
Key specs are typically referenced after warm-up at 25 °C ambient, nominal supply, and the specified output load. Confirm your exact frequency/load and screening in the datasheet or RFQ.
Applications
- Telecom base stations and Stratum 3 systems — low phase noise helps reduce reciprocal mixing and improves clean clock distribution.
- SONET/SDH timing references — stability and aging support holdover performance in synchronization chains.
- Network synchronization (PTP/SyncE nodes) — clean reference improves PLL margin and timing recovery robustness.
- Precision test & measurement instruments — stable timebase supports repeatable frequency and phase measurements.
- Broadcast transmitters and RF modules — low jitter reference improves spectral purity and modulation quality.
Application guides: OCXO for PTP/SyncE & critical infrastructure · Ultra-low-noise OCXO for military/aerospace/telecom.
Compare with FOC-6S (±10 ppb class) or FOC-5S-LN (low-noise compact OCXO).
Engineer Essentials
Recommended Frequencies & Typical Loads
| Frequency | Typical Load | Common Use |
|---|---|---|
| 10.000 MHz | 50 Ω (sine) / 15 pF (HCMOS) | Stratum 3 timing, lab reference, distribution |
| 12.800 MHz | 15 pF (HCMOS) | Legacy telecom timing |
| 19.200 / 20.000 MHz | 15 pF (HCMOS) | SerDes/PHY convenience |
| 25.000 MHz | 15 pF (HCMOS) | Ethernet/optical modules |
| 30.720 MHz | 15 pF (HCMOS) | LTE/5G baseband multiples |
| 38.880 MHz | 15 pF (HCMOS) | Backhaul/transport timing |
Need characterized phase-noise or warm-up curves at your exact frequency/load (e.g., Stratum 3 OCXO 10 MHz, ±0.1 ppm OCXO)? Send an RFQ with your targets.
Design & Layout Tips
- Thermal: place away from strong airflow; consider light thermal isolation. Add an external temperature sense point near the can.
- Power: low-noise LDO and close decoupling; inrush is higher during warm-up.
- EFC: keep control voltage low-noise; RC filter as needed (1–10 kΩ + 100 nF baseline).
- Gating: allow ~2–3 minutes before releasing critical clocks/PLLs.
- Re-cal: plan re-trim after initial aging; ensure pull range margin.
News & guides: OCXO comparison guide · What Are Timing Devices?
Detailed Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 10 – 40 MHz |
| Output | CMOS rectangular (sine optional) |
| Supply Voltage | 5.0 V ±5% |
| Power Consumption | Startup ≤ 400 mA; ≈ 0.8 W |
| Warm-up Time | ~2 minutes to ±0.1 ppm @ 25 °C |
| Frequency Stability | ±0.1 ppm (−30 °C to +70 °C) |
| Aging | ±5 ppb/day; ±0.5 ppm/year |
| Control Voltage | 0–5 V, positive slope |
| Tuning Range | ±5.0 ppm |
| Phase Noise | −105 dBc/Hz @ 10 Hz; −150 dBc/Hz @ 10 kHz |
Values are typical and may vary by frequency and option. For a tighter spec or alternative package, check FOC-4D (SC-cut premium stability).
Ordering Code / Options
Common Order Fields
- Frequency: 10.000 MHz / 12.800 MHz / 19.200 MHz / 20.000 MHz / 25.000 MHz / 30.720 MHz / 38.880 MHz / other
- Output: CMOS (standard) / Sine (50 Ω) optional
- Supply: 5.0 V standard (3.3 V option on request)
- Temperature grade: −30~+70 °C standard; extended ranges on request
- Control: EFC 0–5 V, positive slope; tuning range depends on build
- Screening / Reports: burn-in, aging, phase-noise characterization, CoC, and additional test data on request
Selection Path / Upgrade Options
Need a faster fit check or a different performance tier? Start with the OCXO category, then choose by footprint and noise: FOC-1D (smaller DIP), FOC-5S-LN (compact low-noise), FOC-4D (premium stability). For system design: Telecom OCXO family.
Compare Other OCXO Models
| Specification | FOC-2D | FOC-1D |
|---|---|---|
| Package Size | 20.6×20.6×13.2 mm (DIP) | 20.3×12.7×11.0 mm (DIP) |
| Frequency Range | 10 – 40 MHz | 10 – 40 MHz |
| Output Type | CMOS / optional Sine | CMOS / optional Sine |
| Frequency Stability | ±0.1 ppm (−30~+70 °C) | ±0.1 ppm (−30~+70 °C) |
| Warm-up Time | ~2 min to ±0.1 ppm | ~2 min to ±0.1 ppm |
| Phase Noise | −105 @ 10 Hz; −150 @ 10 kHz | −105 @ 10 Hz; −150 @ 10 kHz |
| Aging Rate | ±5 ppb/day; ±0.5 ppm/year | ±5 ppb/day; ±0.5 ppm/year |
| Voltage Control | 0–5 V, +slope (±5 ppm) | 0–5 V, +slope (±5 ppm) |
| Supply Voltage | 5.0 V ±5% | 5.0 V ±5% |
| Power Consumption | Startup ≤ 400 mA; ≈ 0.8 W | Startup ≤ 400 mA; ≈ 0.8 W |
| Recommended Applications | Base stations, RF, Broadcast, Sync | SDH/SONET, Digital Switches, Test |
See all models in OCXO category. For a broader perspective, read our OCXO comparison guide.
Procurement
Quick Facts
- Part:FOC-2D (OCXO)
- Package:20.6×20.6×13.2 mm DIP
- Compliance:RoHS / REACH
- Traceability:Lot & date code (CoC on request)
- Output / Vcc:CMOS or Sine / 5.0 V
- Supply mode:Samples / Volume / Custom
- Pricing:RFQ (no online price)
Need MOQ, lead time or pricing tiers? Send an RFQ — we’ll reply with a formal quote.
Request for Quote (FOC-2D)
Downloads
Need supporting documents (CoC, screening, test reports)? Include it in your RFQ, or contact Fcom@fujicrystal.com.
Frequently Asked Questions (FAQ)
| What is the typical frequency stability of the FOC-2D OCXO? | It provides ±0.1 ppm stability over −30 °C to +70 °C, ensuring excellent timing precision. |
|---|---|
| What’s the warm-up behavior of the FOC-2D? | It typically reaches ~2 minutes to ±0.1 ppm accuracy at +25 °C ambient. |
| Do you provide samples and volume production? | Yes. We support engineering samples, volume production, and customization. Submit an RFQ with your target frequency, output, and test requirements. |
| What is the MOQ and lead time? | MOQ and lead time depend on frequency, output option, screening, and test requirements. We provide a formal quote via RFQ (no online pricing). |
| Can you customize frequency, output, temperature grade, or testing? | Yes. Typical customizations include frequency, CMOS or sine output, alternative temperature ranges, tighter aging, and screening/test reports on request. |
| Can FOC-2D be used for PTP/SyncE and critical infrastructure timing? | Yes. It is commonly used as a clean reference for telecom synchronization and timing nodes. See: PTP/SyncE OCXO application guide. |
Explore More from FCom Fuji Crystal
Browse oven-controlled oscillators by footprint, noise, and stability.
Browse OCXOs →
Specs, stability, power trade-offs, and real use cases.
Read the Guide →
Why OCXO matters in critical infrastructure timing nodes.
View Application →How to choose OCXO across packages, noise, and stability tiers.
OCXO comparison guide →Stratum-class timing options for telecom and critical infrastructure.
Telecom family page →Technical Support & Application Engineering
Need help selecting an OCXO for holdover, phase noise, or PTP/SyncE architectures? Our technical team can review your targets (frequency, load, temperature, phase noise offsets, aging, g-sensitivity, and screening) and recommend a selection path.
Related: OCXO for military/aerospace/telecom timing · What Are Timing Devices?
Recommended Products
Online message
©Fuji Crystal (Hong Kong) Electronics Co., Ltd. All Rights Reserved. 粤ICP备2022101336号
©Fuji Crystal (Hong Kong) Electronics Co., Ltd. All Rights Reserved.
Online Message