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25GDDM:
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Made in ChinaShipping Port:
ShenZhen
FAQ:
Q1: What is a DAC Cable (Direct Attach Copper Cable)?
A1: A high-speed DAC cable is a cost-effective solution for short-distance data transmission, commonly used in data centers, cloud computing, and enterprise networking to connect switches, servers, and storage devices.
Q2: What are the advantages of using DAC cables over optical transceivers?
A2: Passive DAC cables are more affordable, consume less power, and offer lower latency than active optical cables (AOC) or fiber optics, making them ideal for 10G, 25G, 40G, and 100G Ethernet connections.
Q3: What lengths are available for SFP+ DAC, QSFP+ DAC, and QSFP28 DAC cables?
A3: Standard lengths range from 0.5m to 7m, with popular options like 1m DAC, 3m DAC, and 5m DAC cables for rack-to-rack connectivity.
Q4: Are DAC cables compatible with Cisco, HPE, Juniper, Dell, and Arista devices?
A4: Most SFP DAC and QSFP DAC cables are vendor-agnostic, but always verify compatibility with your switch or server model for seamless integration.
Q5: Can high-speed DAC cables support 400G Ethernet?
A5: Yes, QSFP-DD DAC and OSFP DAC cables now support 200G/400G data rates, ideal for hyperscale data centers and HPC (High-Performance Computing).
Q6: Do passive DAC cables require external power?
A6: No, passive copper DAC cables draw power directly from the device, reducing energy costs and heat dissipation in data center environments.
Q7: What is the maximum distance for DAC cable transmission?
A7: Copper DAC cables typically reach up to 7m—beyond this, consider active DAC cables or AOC/fiber optics for longer distances.
Q8: Are DAC breakout cables hot-swappable?
A8: Yes, hot-swappable DAC cables (e.g., QSFP+ to 4x SFP+ DAC) allow flexible deployment without system downtime.
Q9: How to choose the right DAC cable for 10G/40G/100G networks?
A9: Match your switch port type (SFP+, QSFP+, etc.), data rate, and length requirements. For high-density setups, opt for low-profile DAC cables.
Q10: What is the difference between passive DAC and active DAC cables?
A10: Passive DAC cables rely on device power and support shorter distances (up to 7m), while active DAC cables include signal amplification for extended reach (up to 15m) but consume more power.
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QSFP56 transceivers bonded to parallel single-mode or multimode fiber optic cables, supporting 200 Gbps data rates using PAM4 modulation technology.
Available in a broad range of wire gages-from 28AWG through 30AWG-this 400G copper cable assembly features low insertion loss and low crosstalk.
200G QSFP56 SR4 Optical Transceiver The 200G QSFP56 SR4 100m MPO optical transceiver is a high-performance, energy-efficient solution designed for next-generation data center networks. Featuring a compact QSFP56 form factor and MPO-12 duplex connector, it maximizes port density while consuming under 4W of power. This transceiver is ideal for AI/ML clusters, hyperscale spine-leaf architectures, and 200G Ethernet uplinks. Its plug-and-play design simplifies deployment, offering a cost-effective migration path from 100G infrastructure. Compliant with 200G-SR4 optical specifications 4x53.125Gb/s electrical interface (200GAUI-4) Reach up to 70m on MMF(OM3) Reach up to 100m on MMF(OM4) Single +3.3V power supply Case temperature range: 0 ~ +70℃ Maximum power consumption 4W Single MPO12 connector RoHS complaint 200G QSFP56 SR4 100M 400G QSFP-DD SR8 100M 400G QSFP-DD DR4 2KM 400G QSFP-DD LR4 10KM 400G OSFP SR8 100M 200G 400G 400G 400G 400G 100M 100M 2KM 10KM 100M 850nm 850nm 1310nm CWDM 850nm MPO MPO MPO LC MPO MM MM SM SM MM DDM DDM DDM DDM DDM COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C COM: 0°C ~70°C FAQ: Q1: What is 200G QSFP56? A1: 200G QSFP56 is a high-speed optical module with 4x53.125Gb/s electrical interface (200GAUI-4), designed for 200G Ethernet and InfiniBand HDR networks in data centers. Q2: What is 400G QSFP-DD? A2: It is a high-density, hot-pluggable optical module interface supporting 400Gbps data rates, featuring 8 electrical channels for enhanced bandwidth. Q3: What are the main types of 400G QSFP-DD modules? A3: Common variants include SR8 (short-range), DR4/FR4 (intermediate), LR4/LR8 (long-range), and ER4/ER8 (extended-reach), with transmission distances ranging from 100m to 40km. Q4: How does QSFP-DD differ from QSFP28? A4: QSFP-DD doubles channel count (8 vs. 4) and supports 50Gbps PAM4 modulation per lane, achieving 4x higher bandwidth while maintaining similar port density. Q5: What is the maximum transmission distance for 400G QSFP-DD LR4? A5: The LR4 variant supports up to 10km over single-mode fiber (SMF) using 4x106Gbps lanes, ideal for 5G and cloud interconnects. (https://www.etulinktechnology.com/400g-qsfp-dd-lr4-10km-lc-optical-transceiver_p330.html) Q6: What is the electrical interface of QSFP-DD? A6: The module converts 8 channels of 50Gb/s (PAM4) electrical input data to 4 channels of CWDM optical signals and multiplexes them into a single channel for 400Gb/s optical transmission. Q7: Does QSFP-DD support digital diagnostics? A7: Yes, it includes DDM (Digital Diagnostic Monitoring) per MSA standards, enabling real-time monitoring of temperature, voltage, and optical power. Q8: What DAC options exist for 400G QSFP-DD? A8: Available configurations include direct QSFP-DD-to-QSFP-DD, or breakout to 2x200G QSFP56/4x100G QSFP56/8x50G SFP56 for flexible scaling. Q9: What is 400G OSFP? A9: The OSFP (Octal Small Form-factor Pluggable) is a 400G optical module standard with 8 electrical channels, designed for high-speed data transmission in data centers and telecom networks. Q10: How does OSFP differ from QSFP-DD? A10: OSFP has a larger form factor and non-compatible electrical interfaces, while QSFP-DD is backward-compatible with QSFP28 modules.
Enhanced with APD receiver technology and DFB laser, it ensures superior sensitivity and dispersion tolerance for demanding environments.
The 100G QSFP28 LR1 is designed for 20km optical communication applications. It is intended for the service with single mode fiber in 100Gb/s high speed data communications.
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