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Precision Attenuators for Direct Attach Cables (DACs) and Active Optical Cables (AOCs)

Attenuators for DACs and AOCs play a critical role in maintaining optimal signal integrity in high-speed networking environments. Designed to reduce optical or electrical signal strength to a safe and effective level, these precision components prevent signal overload, minimize distortion, and ensure compatibility across short-reach, high-bandwidth applications. Whether you’re working with 10G, 25G, 40G, 100G, or 400G connections, attenuators help preserve data quality and protect sensitive transceivers in data centers, enterprise networks, and HPC deployments.

For Direct Attach Cables (DACs) — which use passive copper to connect switches, servers, and storage devices — electrical attenuators are often required in short-distance links where signal strength can be too high for certain receivers. Similarly, optical attenuators are used with Active Optical Cables (AOCs) to balance optical power levels, especially in short fiber runs between high-power transmitters and low-power receivers.

Key Benefits of DAC & AOC Attenuators:

• Prevent receiver saturation and signal degradation

• Improve signal-to-noise ratio and reduce bit error rates (BER)

• Ensure reliable interoperability between mismatched components

• Available in fixed or variable attenuation levels (typically from 1 dB to 20 dB)

• Compact, in-line designs for easy deployment in high-density environments

Available in popular form factors such as QSFP+, QSFP28, SFP+, and SFP28, our attenuators are tested for low insertion loss and excellent return loss, ensuring minimal impact on network performance. Many models are hot-swappable and fully compatible with major OEM hardware, including Cisco, Arista, Juniper, and Mellanox.

Optimize your short-reach links with high-quality DAC and AOC attenuators, ideal for hyperscale data centers, financial trading networks, and cloud infrastructure. Contact us for technical specs, bulk orders, or BABA-compliant U.S.-made options.