Patchcord Extralink SC/APC to SC/UPC, Single-mode duplex G.657.A1, 3 mm Ø, 3 m

Extralink single-mode duplex patchcord with SC/APC connector on one end and SC/UPC on the other is a 3 m fiber jumper designed for FTTH, telecom and optical network equipment connections. The cable uses bend-insensitive G.657.A1 fiber in a 3 mm jacket, providing compact routing and low insertion loss for point-to-point links between switches, media converters, ONT/ONU units and optical distribution panels. The mixed connector pair (angled APC to flat UPC) allows mating with different port types while maintaining stable transmission and easy deployment in rack or wall-mounted installations.

Advantages

The patchcord delivers low loss and stable return loss performance thanks to single-mode construction and the SC/APC endface geometry on one side. Bend-insensitive G.657.A1 fiber reduces sensitivity to tight bends and improves reliability in confined routing paths typical for FTTH installations. The 3 mm outer jacket gives a balance between flexibility and durability for repeated handling and secure connector termination in patch panels. Compatibility with common SC ports and duplex adapters ensures straightforward integration into existing networks.

Suitable for

• FTTH subscriber connections between ONT/ONU and in-home or building distribution points
• Interconnection of optical equipment such as switches, media converters and OLT/ONT test setups
• Patching in equipment racks, wall boxes and optical distribution frames where mixed connector types are present
• Short-distance single-mode links in telecom and datacom environments

Key specifications

• Fiber type: single-mode, bend-insensitive G.657.A1
• Connector configuration: duplex with SC/APC on one end and SC/UPC on the other
• Cable diameter: 3 mm round jacket suitable for FTTH and indoor routing
• Length: 3 meters
• Polishing: angled (APC) on one connector, UPC on the other for compatibility with different port types
• Application: indoor/FTTH, patching and interconnection of optical devices

How to use

Verify port types on the devices to ensure SC/APC connects to APC ports and SC/UPC to UPC ports to maintain correct return loss characteristics. Route the 3 mm cable through cable management channels or wall ducts avoiding tight bends below the minimum bend radius recommended for G.657.A1 fiber. Insert each SC connector until it clicks into the adapter or device port and secure any front-panel retention clips or dust caps when not in use. For testing, use an optical power meter or light source to confirm insertion loss and end-to-end continuity after installation.

Recommendations

Handle connectors by the boot or housing and avoid touching or contaminating endfaces; clean connectors with appropriate fiber cleaning tools before mating. Do not exceed bend radii commonly specified for G.657.A1 fiber and avoid tension on the cable during installation. Store unused ends with dust caps installed and perform regular inspection of connections in active networks to maintain low-loss performance.