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Tool-Free FC fast Connector for Field Assembly and Stable Optical Links
Factory pre‑polished – no field polishing for UPC or APC.
V‑groove mechanical splice with index‑matching gel for immediate low‑loss termination.
UPC (IL ≤0.25dB, RL ≥45dB) and APC (IL ≤0.30dB, RL ≥60dB) – APC virtually eliminates back‑reflection.
Threaded metal coupling nut (M5×0.75) – vibration‑resistant locking, superior to push‑pull/bayonet.
Cable support: 900μm, 2.0mm, 3.0mm round, and 2.0×3.0mm FTTH drop.
Colour‑coded boots: blue (UPC SM), green (APC), black (MM) for instant identification.
Housing styles: pre‑embedded, screw‑type, and snap‑on – adapt to various installations.
No epoxy, adhesive, or power tools – field assembly in 2‑3 minutes.
Rated >1.000 mating cycles with minimal performance degradation.
What is an FC Fast Connector?
The FC fast connector is a factory pre‑polished, field‑installable termination device that enables rapid, low‑loss fibre connections without the need for epoxy, adhesives, or hand polishing. It combines a precision V‑groove mechanical splice with a pre‑cleaved fibre stub and index‑matching gel to achieve immediate optical termination. Available in UPC and APC polish types, the connector features a threaded metal coupling nut for secure, vibration‑resistant mating. Designed for FTTH, emergency restoration, CATV, and industrial applications, this connector allows field technicians to terminate single‑mode fibres in minutes using only basic tools – making it an essential solution for high‑efficiency deployment in challenging environments.
FC fast Connector Specification parameters
- Specification parameters
- OPTICAL CHARACTERISTICS
| Item | UPC | APC | ||
|---|---|---|---|---|
| Φ0.125mm | Φ0.25mm | Φ0.125mm | Φ0.25mm | |
| Radius of Curve(mm) | 7~25 | 10~25 | 5~12 | 5~12 |
| Return Loss(dB) | 50 | 50 | 55 | 55 |
| Apex Offset(um) | ≤50 | |||
| Fiber Height(nm) | -0.5 | |||
| Polishing Angle(°) | 8±0.3 | |||
| Testing wavelength(nm) | 1310&1550 | |||
| Insertion Loss | ≦0.3dB | |||
| Operating temperature | -40℃~ +80℃ | |||
| Cable diameter | 0.9mm, 2mm, 3mm | |||
| Service life | N＞1000 | |||
| Dust Cap | LDPE | |||
| Connectors type | FC, ST, SC, LC | |||
| Polishing type | UPC, APC | |||
| Fiber type | Single-mode, Muti-mode | |||
| Port type | Simple, double | |||
| Application | drop cable/patch cords/pigtail | |||
Product Structure & Composition
FC Threaded Coupling Nut
Threaded metal coupling nut (M5×0.75) screws onto adapter barrel, providing a positive mechanical lock that prevents accidental disconnection and ensures vibration‑resistant performance.
Pre‑Polished Zirconia Ceramic Ferrule
Factory pre‑polished 2.5mm zirconia ferrule (UPC or APC) delivers low insertion loss and high return loss – no field polishing required.
Mechanical Splice and Index‑Matching Gel
Precision V‑groove mechanical splice aligns field‑inserted fibre with a pre‑cleaved stub for accurate core‑to‑core alignment without fusion splicing. Proprietary index‑matching gel eliminates air gaps and minimises signal reflection at the splice point.
Strain‑Relief Boot and Cable Compatibility
Flexible boot provides strain relief; supports 900μm tight‑buffer, 2.0mm, 3.0mm round cables, and 2.0×3.0mm FTTH drop cables.
Benefits of FC fast Connector
Fast Field Termination
No epoxy, adhesives, or polishing – only a stripper, cleaner, and cleaver needed. Termination takes 2‑3 minutes. V‑groove mechanical splice ensures stable alignment, rated >1.000 cycles and 50N tensile load.
UPC & APC Polish Options
UPC: IL ≤0.25dB, RL ≥45dB. APC: IL ≤0.30dB, RL ≥60dB – virtually eliminates back‑reflection, ideal for PON, analogue video, and high‑power lasers.
Threaded Coupling for Vibration Resistance
M5×0.75 threaded metal nut provides a superior mechanical lock over push‑pull/bayonet, ensuring secure mating in industrial, railway, and outdoor environments – eliminates intermittent failures.
Versatile Cable Compatibility
Supports 900μm, 2.0mm, 3.0mm round, and 2.0×3.0mm FTTH drop cables – one connector fits indoor distribution, premises wiring, and subscriber access, simplifying inventory.
Engineering Applications FC fast Connector
FTTH and FTTx Access Networks
Deployed in FTTH/FTTx projects for terminating drop cables at subscriber premises and distribution points; APC version preferred for PON where return loss is critical.
Emergency Restoration and Network Repair
Enables rapid on‑site restoration without fusion splicing – technicians can restore service in minutes, ideal for emergency maintenance in telecom and utility networks.
Industrial and Railway Communication Networks
Threaded locking ensures connection security in high‑vibration environments (factory floors, railway signalling); allows rapid field termination of replacement cables without specialised equipment.
CATV and Video Transmission Systems
APC polish meets strict return loss requirements for analogue video; fast termination reduces downtime during system upgrades and repairs.
Shipping & Packaging
Product Comparison：
| Feature / Dimension | FC Fast Connector (Pre‑polished, UPC) | Field‑Polish FC Connector (Epoxy/Polish, UPC) | SC Fast Connector (UPC) |
|---|---|---|---|
| Coupling Mechanism | Threaded metal nut (M5×0.75) - twist to lock | Threaded metal nut (same as FC) | Push‑pull latch - push to connect, pull to release |
| Housing Shape | Round metal or plastic housing | Round metal or plastic housing | Rectangular plastic housing |
| Port Density | Lower - round housing requires more space | Lower - same as FC | Higher - rectangular housing allows denser packing |
| Typical Insertion Loss (UPC) | ≤ 0.25 dB | ≤ 0.15 dB | ≤ 0.25 dB |
| Typical Return Loss (UPC) | ≥ 45 dB | ≥ 50 dB | ≥ 45 dB |
| Environmental Suitability | Ideal for field deployment - works in challenging environments (poles, manholes) | Best suited for workshop or controlled environments | - (not provided in source) |
| Reusability | Re‑insertable up to 2‑5 times | Typically single‑use; requires full re‑termination | - (not provided in source) |
| Vibration Resistance | Excellent - threaded nut prevents loosening | Excellent - same threaded design | Good, but push‑pull latch can loosen under severe vibration |
| Cost (Relative) | Higher per‑unit cost, but lower total installed cost for field deployment | Lower per‑unit cost, but higher labour and training costs | - (not provided in source) |
| APC Availability | Yes (green housing) | Yes (green housing; values also given for APC) | Yes (green housing) |
| Best For / Typical Applications | FTTH deployment, emergency restoration, field termination, industrial environments, CATV, test equipment, high‑vibration environments | Factory production, high‑volume manufacturing, applications requiring absolute lowest loss | Data centres, enterprise networks, FTTH, general telecom, high‑density patching, modern networks |
FC fast Connector Selection Guide
1. FC Fast Connector (Pre‑polished) – Choose for outdoor / harsh / emergency deployments.
Fastest field installation, no epoxy or oven needed.
Excellent vibration resistance (threaded lock).
Reusable (2–5 times) – ideal for temporary or repair work.
Best total installed cost when labour and rework are factored in.
2. Field‑Polish FC Connector (Epoxy/Polish) – Choose for factory / lab / ultra‑low‑loss requirements.
Lowest insertion loss (≤0.15 dB) and highest return loss (≥50 dB).
Requires skilled polishing and controlled environment.
Lower material cost but higher labour – best for bulk pre‑termination in workshops.
Not suitable for field work or repeated use.
3. SC Fast Connector (UPC) – Choose for indoor high‑density / modern network infrastructures.
Push‑pull latch allows quick patching in racks.
Rectangular housing saves space – ideal for data centres and enterprise wiring closets.
Fully compatible with most current equipment (switches, ODFs).
Good vibration resistance for fixed indoor use, but not recommended for severe outdoor vibration.
Final quick‑decision guide:
Outdoors, vibration, fast repair → FC Fast (pre‑polished)
Absolute lowest loss, factory production → Field‑Polish FC
High density, indoor racks, modern standards → SC
Installation Instructions
Step 1: Prepare the Fibre
Strip the cable jacket and buffer coating to expose the bare fibre. Use a precision fibre stripper to remove the 900μm tight buffer, then clean the exposed fibre with an alcohol‑wet tissue to remove any contaminants.
Step 2: Cleave the Fibre
Using a precision fibre cleaver, cut the bare fibre to the specified length (typically 8mm). Ensure a clean, perpendicular cleave for optimal optical performance.
Step 3: Insert the Fibre into the Connector
Pass the prepared fibre through the screw cap and fibre guide, then insert it into the connector body. Continue inserting until the fibre bends slightly – this indicates proper seating against the pre‑cleaved stub.
Step 4: Lock and Assemble
Push the fixed ring forward to lock the fibre in place, then tighten the screw cap. Install the FC housing and coupling nut to complete the connector assembly.
Step 5: Inspect and Test
Inspect the connector end‑face using a fibre microscope to verify cleanliness and the absence of scratches or debris. If required, test the connection with an optical power meter or OTDR to confirm insertion loss is within specification.
Download YRTFIBER Product Catalog
Factory Real Shot
Frequently Asked Questions & Quick Inquiry
FC fast Connector FAQ
How fast is the FC fast connector installation?
Installation is extremely fast—strip, clean, insert, and finish. Many installers complete installation within 20 seconds to a minute.
What are the insertion loss and return loss values?
Typical performance includes insertion loss ≤ 0.3 dB and return loss ≥ 50 dB for UPC, with ≥ 55 dB return loss for APC variants.
Is the connector reusable?
Yes—many FC fast connectors are designed for easy disassembly and reuse, providing flexibility for field reconfiguration.
Can it withstand harsh environments?
Absolutely. These connectors are rated from −40 °C to +85 °C and maintain performance under various field conditions.
Do you support OEM or customized orders?
Yes—we welcome OEM and ODM requests, including customized packaging, labeling, and design tailored to your needs.
Are samples available for testing?
Yes—free samples are available under certain conditions. Freight charges may apply. Contact us for details.
What warranty and maintenance services are offered?
We offer a two-year warranty, free returns within the first three months for quality issues, and one-year maintenance support.
How quickly will you respond to inquiries?
We guarantee a response to all inquiries within 24 hours, ensuring fast and professional service.
What after-sales support is provided?
We're with you from production through delivery, tracking every stage. If issues arise after receiving your order, we provide prompt and effective solutions.
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