Fibre optic connector SC/APC DIGITUS Qoltec 54498 — single-mode, 0.9 mm, pack of 10, black/green

Qoltec 54498 fibre optic connector SC/APC is a pre-assembled, fast-mating single-mode SC connector in APC polish, designed to terminate optical fibres without welding. It is supplied in a pack of 10 and comes in green/black housing intended for conventional single-mode installations where quick, low-attenuation connections are required.

Advantages

Fast connectors provide low attenuation and allow fibre termination without the need for fusion splicing. The SC/APC version features an 8° angled polished ferrule end-face that reduces reflectance at the interface, improving return loss compared with flat-polished connectors. The connector design enables quick, repeatable connections and is resistant to typical connectorisation errors, while its SC form factor is widely compatible with telecommunications and active equipment.

Suitable for

• Single-mode optical links in LAN and WAN networks
• Telecommunications equipment and media converters
• CATV distribution and measurement or sensor systems
• Field termination where welding is impractical (e.g., building switch boxes)

When it may not be suitable

This connector is intended for single-mode fibre; it is not appropriate for multimode fibre applications. Fast push-fit termination may not achieve the same long-term mechanical robustness as professionally fusion-spliced joints in environments with extreme mechanical stress or frequent reconnections.

Key specifications

• Connector type: SC/APC (angled physical contact)
• Fiber mode: Single-mode
• Quantity per pack: 10 pieces
• Housing colour: Green/Black
• Intended fibre diameter: compatible with standard 0.9 mm buffered fibres

How to use

Prepare the single-mode fibre by stripping the buffer and cleaning the fibre end according to standard procedures. Insert the prepared fibre into the fast connector following the manufacturer’s assembly steps until it seats securely; the push-fit mechanism fixes the fibre and aligns it with the ferrule. After termination, inspect the end-face and test insertion loss and return loss with suitable test equipment. Use the connector with compatible SC/APC adapters or devices.

What to consider before purchase

• Confirm you require single-mode SC/APC connectors rather than multimode or UPC types
• Ensure compatibility with the fibre diameter (standard 0.9 mm buffered fibre)
• Assess whether field fast termination meets your durability and loss requirements versus fusion splicing

Usage recommendations

For best results, perform fibre end-face cleaning and test each terminated connector for insertion loss and return loss; use SC/APC adapters for mating and avoid repeated unplugging in high-vibration environments to maintain low attenuation.