Alantec fiber optic adapter singlemode SM LC/APC quad FOA-LCA-SMQ

The Alantec fiber optic adapter singlemode SM LC/APC quad FOA-LCA-SMQ is a panel-mount coupling designed to connect and align four singlemode LC/APC connectors in a compact quad format. It supports mating of LC/APC simplex or duplex terminations, providing low insertion loss and stable mechanical alignment for singlemode transmission paths in patch panels, fiber enclosures and optical equipment. The adapter is intended for use where angled physical contact (APC) terminations are required to maintain low return loss in singlemode links.

Advantages

This LC/APC quad adapter delivers consistent low insertion loss and favourable return loss performance associated with APC ferrule geometry, ensuring signal integrity in singlemode networks. Its quad configuration saves installation space while keeping four connector interfaces together for convenient patching and management. The adapter offers robust mechanical alignment to minimise connector wear and to support repeated mating cycles without significant optical degradation.

Suitable for

• Singlemode fiber patch panels requiring LC/APC terminations
• Fiber distribution frames and wall-mounted enclosures
• Telecommunications and data center backbone links with APC connectors
• Optical equipment panels where compact quad couplers are needed

Key specifications

• Connector type: LC/APC quad format for singlemode connectors
• Mode: singlemode (SM)
• Number of ports: four LC/APC interfaces (supports simplex or duplex mating)
• Insertion loss: designed for low insertion loss typical of LC/APC connections
• Return loss: engineered for high return loss performance with APC ferrules
• Mounting: panel/adapter slot compatible for patch panels and enclosures
• Mechanical alignment: precision ceramic alignment sleeves for stable coupling

How to use

Install the adapter into the panel cutout or adapter plate designed for quad LC modules and secure it according to the enclosure or patch panel instructions. Insert LC/APC connectors into the adapter until they click into place, taking care to align the keyed connector housings for correct APC orientation. For duplex connectors, ensure each duplex pair is mated to the corresponding adapter opening. When disconnecting, depress the connector latch and pull straight out to avoid stressing the fiber or connector ferrule.

Usage recommendations

Maintain clean connector end-faces by using appropriate fiber cleaning tools and visual inspection before mating. Use dust caps on unused ports and avoid excessive bending of fibers close to the adapter to preserve optical performance and minimize insertion loss over time.