ACT SC Fiber optic attenuator 3 dB

The ACT Fixed Optical Attenuator SC 3 dB is designed to reduce optical signal power in fiber optic networks using optimized ion-doped fiber technology. It provides stable, fixed attenuation to help manage signal levels and prevent receiver overload. The attenuator is fitted with SC/UPC connectors and is supplied as a single unit suited for insertion into existing fiber links.

Advantages

This fixed optical attenuator delivers consistent attenuation performance and long-term stability thanks to optimized ion-doped fiber construction. Its SC/UPC connector interface ensures compatibility with common single‑mode network equipment. The compact, single‑pack design is easy to install and requires no adjustment once placed in the optical path.

Suitable for

• Reducing optical signal power in single‑mode fiber links
• Preventing receiver saturation in optical transceivers and OLT/ONU equipment
• Testing and aligning optical systems where precise fixed attenuation is required

Key specifications

• Brand: ACT
• Model / MPN: EA4003
• EAN: 8716065271454
• Connector type: SC/UPC
• Attenuation: 3 dB (fixed)
• Technology: ion-doped fiber fixed attenuator
• Package: single pack

How to use

Insert the ACT SC 3 dB attenuator between two SC/UPC fiber connectors in the optical link. Ensure connectors are clean before mating to minimize insertion loss beyond the specified attenuation. Once connected, the attenuator provides a fixed 3 dB reduction of optical power without further adjustment.

Recommendations

For reliable operation, clean fiber endfaces before installation and avoid tight bending at the attenuator location. Use the attenuator only with compatible single‑mode SC/UPC ports and select the attenuation value appropriate for system power budgeting.