Fibre optic cable Alcasa LW-803TC4 3 m ST SC Violet

The Alcasa LW-803TC4 is a 3 m OM4 multimode fibre optic patch cable with ST and SC connectors designed for full duplex links. With a 50 µm core diameter and multimode OM4 specification, this violet cable supports high-speed short- to medium-range data transmission and is intended for structured cabling in data centres, telecom rooms and networking racks. The combination of ST and SC terminations provides compatibility with a wide range of active equipment and patch panels while the 3 metre length offers flexible placement without excessive slack.

Advantages

This OM4 fibre cable offers low attenuation and controlled modal bandwidth typical for OM4 multimode fibre, which helps maintain signal integrity over horizontal and equipment interconnect distances. The ST and SC connectors ensure easy insertion and stable mating in compatible ports. The duplex configuration enables simultaneous transmit and receive channels for duplex network links, and the violet jacket provides clear visual identification of OM4 multimode cabling within an installation.

Suitable for

• Data centre patching and rack-to-rack connections
• Connections between switches, transceivers and patch panels
• Short- to medium-range multimode links using OM4 fibre
• Environments requiring visual cable identification (violet jacket)

When it may not be suitable

This cable is multimode OM4 with a 50 µm core and is intended for short- to medium-range links. It is not suitable for long-haul singlemode applications or where singlemode optics are required. It also will not be compatible with devices that require different connector types or polarity configurations unless adapters or transceivers are used.

Key specifications

• Length: 3 m
• Fibre type: Multimode OM4
• Core diameter: 50 µm
• Connector A: ST (male)
• Connector B: SC (male)
• Duplex configuration for full duplex communication
• Jacket colour: Violet
• Suitable for patching and equipment interconnect

How to use

Route the 3 m patch cable between matching fibre ports on network devices or patch panels, taking care to maintain bend radius and avoid sharp kinks. Insert the ST connector into the matching ST port by aligning and twisting the bayonet-style coupling until secure, and insert the SC connector by aligning the keyed ferrule and pushing until it latches. Verify polarity and that each transmit port connects to the receive port on the opposite device. After installation, test the link with appropriate fibre test equipment to confirm optical power and continuity.

What to consider before purchase

• Ensure your equipment supports multimode OM4 fibre and the ST/SC connector types
• Confirm required cable length and whether 3 m meets rack and patch panel distances
• Check polarity and duplex requirements for your network links
• Verify environmental and jacket requirements (e.g., LSZH) if needed for your site

Usage recommendations

Maintain minimum bend radius, avoid repeated sharp bends, and label both ends to simplify management. Use fibre-cleaning tools on connector endfaces before mating to reduce insertion loss and ensure reliable performance.