
The 100G QSFP28 CWDM4 4x 25G NRZ 1310nm 2km Duplex LC/UPC Industrial Module, Generic is a hot-pluggable QSFP28 transceiver rated at 103.1Gbps. Using a Duplex LC optical interface over SMF at 1310nm, it covers transmission distances up to 2km. Compliance with QSFP28 MSA, CWDM4 MSA, IEEE802.3bm, SFF-8636, together with integrated diagnostic monitoring, makes it a dependable choice for CWDM metro access, enterprise and telecom edge networks.
Product Highlights
- QSFP28 form factor, 103.1Gbps data rate
- Wavelength: 1310nm
- Connector: Duplex LC
- Reach: up to 2km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Part Number | QSFP-CWDM4-100G-I |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max Data Rate | 103.1Gbps |
| Wavelength | 1310nm |
| Max Cable Distance | 2km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -2.5~6.5dBm |
| RX Power | -11.5~3.5dBm |
| Power Budget | 9dB |
| Extinction Ratio | >3.5dB |
| Power Consumption | <4.5W |
| DDM/DOM | Supported |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Packaging Technology | COB Packaging |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | QSFP28 MSA, CWDM4 MSA, IEEE802.3bm, SFF-8636 |
Applications
Built for CWDM metro access, enterprise and telecom edge networks, this QSFP28 module carries 103.1Gbps over SMF up to 2km per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. Custom labeling, packaging and compatibility coding for specific equipment vendors are available from our factory on request. The link runs 4x 25G-NRZ modulation, which keeps it aligned with current 100G switch silicon.
Standards and Compatibility
Compliance: QSFP28 MSA, CWDM4 MSA, IEEE802.3bm, SFF-8636. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
Order this product as QSFP-CWDM4-100G-I. 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.
Quality and Testing
Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.
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.
Custom-made Fiber Products
As a manufacturer serving the fiber optic industry since 1995, we have strong in-house manufacturing and design capability. From early GBIC, Xenpak and X2 modules to today's SFP, SFP+, QSFP, QSFP-DD and OSFP products, we grow together with the industry. OEM and custom-designed transceivers and cables are welcome, and our factory-direct pricing is very competitive compared with online retail stores.
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.



