ROGER FIBREOPTICAL NETWORK DOSSIERS Build a Fiber Brief

Bulgarian Stockpile of 400g High-Speed ​​DAC Cables

400G DAC cables, both active and passive, are available in Bulgaria through suppliers like Tilcom Ltd. and Filkab, supporting high-speed, short-reach data center connectivity. Technical Overview of 400G DAC CablesDirect Attach Copper (DAC) cables are high-speed, cost-effective interconnects designed for short-reach data transmission in high-performance computing and data center environments. They operate purely on electrical signals, avoiding the latency and power consumption associated with active optical cables (AOC).

The 400G throughput is typically achieved using eight channels of 50G PAM4 signaling, compatible with QSFP-DD or OSFP transceivers.

Active DA

C (AEC): Includes DSP equalization to enhance signal integrity, allowing longer reach up to 7 meters with high flexibility and reduced bend radius, ideal for dense rack deployments.

Passive DA

C: Supports up to 3 meters reach, with 50Gbps per lane PAM4 modulation, offering a low-cost, low-power solution for short-range connections. Applications: Primarily used in Top-of-Rack (ToR) switching, connecting servers to switches within the same rack or adjacent racks, suitable for AI clusters, high-frequency trading, and hyperscale data centers.

Bulgarian Suppliers

Tilcom Ltd.: Established in 1999, Tilcom is a trusted supplier of cables, electrical equipment, and optical solutions in Bulgaria. They provide high-quality DAC cables and related infrastructure products for enterprise and industrial applications. Filkab: Offers a wide range of cables, including high-speed network and communication cables.

As a certified TKD partner, Filkab maintains large stock quantities and can supply cables according to customer specifications, ensuring fast delivery across Bulgaria.

Key Considerations

Cable Type: Choose active DAC for longer reach and enhanced signal integrity; passive DAC for cost-effective, short-range connections. Compatibility: Ensure the DAC cable matches the transceiver type (QSFP-DD or OSFP) and supports the required 400G PAM4 signaling. Deployment: Ideal for high-density racks where space, power efficiency, and low latency are critical.

For procurement, contacting Tilcom Ltd. or Filkab directly will provide information on stock availability, lengths, and pricing for 400G DAC cables in Bulgaria.

Bulgarian Stockpile of 400g High-Speed ​​DAC Cables

FS QSFP112 400Gbps DACs Mini Review: What 400G Direct Attach

A hands-on look at FS''s 400G QSFP112 Direct Attach Cables, exploring their physical design, connector evolution from QSFP-DD, and practical considerations for homelab and data

Direct Attach Copper (DAC) Cables

High-speed Volex Direct Attach Copper (DAC) cables deliver reliable, energy-efficient data transfer for data centers. Customizable, tested and ready to deploy.

NVIDIA Mellanox LinkX Ethernet DAC Cables

High-speed DAC and AOC cables and optical transceiver interconnects are playing a critical role in these modern data center technologies. Learn more with this 38-page e-book packed with details on

400G QSFP+ DAC Cable

The T1-DAC-400G QSFP DD copper direct-attach cable is suitable for very short distances (up to 3m) and are used as a cost-effective solution for establishing a

Direct Attach Cable (DAC) Assemblies

High-speed I/O passive cable assemblies that can deliver data rates as high as 400 Gbps with a variety of lengths or customized options for greater design flexibility.

Choosing Between 400G DAC, AOC, ACC, and AEC: A Simple Guide

In the context of 400G connectivity solutions, the use of appropriate high-speed cables is of paramount importance. This article will provide a brief overview of how to choose among the four

NVIDIA LinkX Ethernet DAC Cables

Learn about direct attach copper (DAC) cables and splitters for GPU-accelerated computing. NVIDIA ® LinkX ® Ethernet DAC cables are the lowest-cost way to create high-speed 100G–400G links in

9V4 Series 400G DAC Cable Assemblies

3M™ 9V4 series 400G QSFP-DD direct-attach copper cable assemblies are passive copper cable assemblies are foldable and bendable with minimal performance impact.

High Speed Cable Assemblies | High-Speed

The same 200G, 400G and 800G PAM4 connectors used in these cable assemblies are also available as transceivers. Typical applications include data centers

High-Speed Cable Assemblies

These cable assemblies support aggregate data rates of 25, 50, 100, 200, 400 and 800 Gbps. We offer custom cabling solutions and corresponding pluggable I/O cages and connectors.

Unlocking Hyperscale Data Centre Potential with Volex

In the realm of hyperscale data centres, speed and efficiency are paramount. As data demands continue to surge, infrastructure must evolve to meet the needs of

Getting The Most Out of 400G AOC/DAC Cables

In today''s data-driven world, high-speed data transfers and reliable connectivity are critical to the success of every data center. As data rates

How to Choose a 400G High-Speed Direct Attach Cable (DAC)?

400G Passive Direct Attach Cables (DACs) are key components for building efficient and cost-effective network interconnections. To help you achieve stable and reliable 400G connections between

NVIDIA High-Speed Cables: 400G/800G DAC AOC

Comprehensive guide to NVIDIA 400G and 800G high-speed cable solutions. Compare DAC vs AOC technologies, understand deployment best

FS and Luxshare Expand Partnership to Launch High-Speed 1.6T and

FS partnered with LuxshareTech to launch 1.6T and 800G OSFP DAC cables, designed for the demands of hyperscale data centers and HPC networks.

400G DAC and AOC cables

Home DAC & AOC 400G cables 400G cables High Speed 400G data rate DAC and AOC connectivity cables with QSFP format Sort By:

400G DAC Cable Solutions for Short-Reach Connectivity

400G Direct Attach Copper (DAC) cable is a high-speed, cost-effective interconnect solution designed for short-reach data transmission within high-performance computing environments.

How to Choose the Right 400G InfiniBand DAC/AOC

This article introduces how to choose the right 400G InfiniBand DAC/AOC cables. It covers key differences, and advantages in distance, cost,

Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

Still Have a Technical Question?

Use the inquiry form to describe the product category, application, interfaces, capacity and installation environment.

Start a Project Inquiry