100G QSFP28 4x 25G NRZ to 4x 25G SFP28 25G NRZ Passive Breakout DAC

The 100G QSFP28 4x 25G NRZ to 4x 25G SFP28 25G NRZ Passive Breakout DAC, 0.5m (2ft) is a passive twinax direct attach copper cable with QSFP28 to SFP28, supporting 100Gbps links over a length of 0.5m (2ft). As a passive cable it draws essentially no power and adds no latency to the link. It is a cost effective, low latency interconnect for 100G Ethernet, data center interconnect and 5G transport networks, and complies with IEEE 802.3, QSFP28 MSA, SFF-8665.

Product Highlights

• QSFP28 to SFP28
• Data rate: 100Gbps
• Cable type: Passive Twinax
• Length: 8 standard lengths between 0.5m (2ft) to 5m (16ft)
• Operating temperature: 0 to 70°C (32 to 158°F)

Designed for 100G Ethernet, data center interconnect and 5G transport networks, the 100G QSFP28 4x 25G NRZ to 4x 25G SFP28 25G NRZ Passive Breakout DAC, 0.5m (2ft) carries 100Gbps between QSFP28 to SFP28 interfaces. This unit is provided in 8 standard lengths from 0.5m (2ft) to 5m (16ft). It installs directly into standard ports with no separate transceivers or patch cords to manage at either end. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of QSFP-4SFP25G-CU50CM. The link runs QSFP28-4x 25G-NRZ SFP28-1x 25G-NRZ modulation, which keeps it aligned with current 100G switch silicon.

On the compatibility side, this unit is the practical equivalent of the Cisco part QSFP-4SFP25G-CU50CM and works in Cisco systems out of the box. Standards compliance covers IEEE 802.3, QSFP28 MSA, SFF-8665.

The part number varies by length, e.g. QSFP-100G-4SPC005 at the shortest standard option. The cable is supplied in 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 2.5m (8ft), 3m (10ft), 3.5m (11ft) and 5m (16ft). Custom lengths beyond the standard range are available on request. Wire gauge: 30AWG. Samples for testing can be arranged before bulk orders.

Goods are normally sent by courier such as DHL, UPS, FedEx, TNT or EMS; air and sea freight are also available on request. Commonly used items are kept in stock for immediate shipment, and out-of-stock items are usually delivered within a few working days. We can also ship on your courier account or hand goods to your appointed forwarder.

Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.

Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.

Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.