100G QSFP28 CWDM4 4x 25G NRZ QSFP-100G-CWDM4-S 1310nm 2km Duplex LC/UPC Module, Cisco

Designed for CWDM metro access, enterprise and telecom edge networks, the 100G QSFP28 CWDM4 4x 25G NRZ QSFP-100G-CWDM4-S 1310nm 2km Duplex LC/UPC Module, Cisco provides 103.125Gbps (4x 25.78Gbps) throughput in a QSFP28 form factor. It operates at 1271nm, 1291nm, 1311nm and 1331nm over SMF through a Duplex LC/UPC connector and supports link lengths up to 2km. The module meets QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP28 form factor, 103.125Gbps (4x 25.78Gbps) data rate
- Wavelength: 1271nm, 1291nm, 1311nm and 1331nm
- Connector: Duplex LC/UPC
- Reach: up to 2km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | QSFP-100G-CWDM4-S |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 103.125Gbps (4x 25.78Gbps) |
| Wavelength | 1271nm, 1291nm, 1311nm and 1331nm |
| Max. Cable Distance | 2km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | 4 x CWDM DML (DFB) |
| Receiver Type | PIN |
| TX Power | -6.5~2.5dBm |
| Minimum Receiver Power | -11.5dBm |
| Power Budget | 5dB |
| Receiver Overload | 2.5dBm |
| Max. Power Consumption | 3.5W |
| Extinction Ratio | >3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Inbuilt FEC | Yes |
| Bit Error Ratio (BER) | 1E-12 |
| MTBF | 12,800,000 Hours (@40°C, 60% CL) |
| Protocols | QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4 |
Applications
In CWDM metro access, enterprise and telecom edge networks, the 100G QSFP28 CWDM4 4x 25G NRZ QSFP-100G-CWDM4-S 1310nm 2km Duplex LC/UPC Module, Cisco delivers 103.125Gbps (4x 25.78Gbps) transmission over SMF with a reach of 2km. The Duplex LC/UPC interface and 1271nm, 1291nm, 1311nm and 1331nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. It is interoperable with Cisco platforms and replaces the Cisco part QSFP-100G-CWDM4-S directly. The link runs 4x 25G-NRZ modulation, which keeps it aligned with current 100G switch silicon.
Standards and Compatibility
On the compatibility side, this unit is the practical equivalent of the Cisco part QSFP-100G-CWDM4-S and works in Cisco systems out of the box. Standards compliance covers QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4.
Ordering Information
Order this product as QSFP-CWDM4-100G-CISCO. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.
Logistics
Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.
Quality Assurance
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.
How We Pack
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.
Customization Service
Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.
100G QSFP28 CWDM4 4x 25G NRZ