
The Cisco C21 C22 Compatible QSFP28 100G DWDM PAM4 80km (Require EDFA and TDCM) Duplex CS/UPC SMF Transceiver Module is a QSFP28 optical transceiver delivering 100Gbps (2x50G) over fiber. Operating at 1560.61nm,1559.79nm with a Duplex CS/UPC interface, it reaches 80km with EDFA and TDCM and is compliant with IEEE 802.3bm, QSFP28 MSA, SFF-8636, SFF-8024. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in data center interconnect, metro transport and carrier aggregation networks.
Product Highlights
- QSFP28 form factor, 100Gbps (2x50G) data rate
- Wavelength: 1560.61nm,1559.79nm
- Connector: Duplex CS/UPC
- Reach: up to 80km with EDFA and TDCM
- DDM/DOM: Supported
- Operating temperature: 0 to 85°C (32 to 185°F)
Specifications
| Part Number | DW2-QSFP100G80-2122 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max Data Rate | 100Gbps (2x50G) |
| Wavelength | 1560.61nm,1559.79nm |
| Max Cable Distance | 80km with EDFA and TDCM |
| Connector | Duplex CS/UPC |
| Cable Type | SMF |
| Transmitter Type | EML |
| Receiver Type | PIN |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 85°C (32 to 185°F) |
| TX Power | -1~4dBm |
| Minimum Receiver Power | -13dBm |
| Power Budget | 12dBm |
| Receiver overload | ≥5dBm |
| Power Consumption | 7W |
| Extinction Ratio | 6dB (Typ.) |
| Modulation Format | PAM4 |
| Protocols | IEEE 802.3bm, QSFP28 MSA, SFF-8636, SFF-8024 |
| Application | DCI, 100G Ethernet Metro-Access over DWDM,Campus and Enterprise Links |
Applications
Built for data center interconnect, metro transport and carrier aggregation networks, this QSFP28 module carries 100Gbps (2x50G) over twinax copper up to 80km with EDFA and TDCM per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs PAM4 modulation, which keeps it aligned with current 100G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with IEEE 802.3bm, QSFP28 MSA, SFF-8636, SFF-8024. It plugs into any standards-based QSFP28 port, and compatibility coding for specific switch or router brands can be done in our factory before shipment.
Ordering Information
Our part number for this module is DW2-QSFP100G80-2122. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packing Details
Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.
Factory Custom Capability
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.
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.



