
Designed for 100G Ethernet, data center interconnect and 5G transport networks, the 100G QSFP28 BX40 4x 25G NRZ 1309.14nm-TX/1304.58nm-RX 40km Simplex LC/APC Industrial Module, Arista provides 100Gbps throughput in a QSFP28 form factor. It operates at 1309.14nm-TX/1304.58nm-RX over SMF through a Simplex LC/APC connector and supports link lengths up to 40km. The module meets QSFP28 MSA, 100G Lambda MSA, SFF‑8636, IEEE 802.3bs, CAUI‑4 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP28 form factor, 100Gbps data rate
- Wavelength: 1309.14nm-TX/1304.58nm-RX
- Connector: Simplex LC/APC
- Reach: up to 40km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Part Number | QSFP-BX40-100G-I |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 100Gbps |
| Wavelength | 1309.14nm-TX/1304.58nm-RX |
| Max. Cable Distance | 40km |
| Connector | Simplex LC/APC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | APD |
| TX Power | 1.7~7.1dBm |
| Minimum Receiver Power | -13.8dBm |
| Power Budget | 15.5dB |
| Receiver Overload | -3.4dBm |
| Max. Power Consumption | ≤4.5W |
| Extinction Ratio | >5dB |
| DDM/DOM | Supported |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 1x 100G-PAM4 |
| Packaging Technology | BOX |
| CDR (Clock and Data Recovery) | No |
| Bit Error Ratio (BER) | 2E-4 |
| Inbuilt FEC | KP1 |
| Protocols | QSFP28 MSA, 100G Lambda MSA, SFF‑8636, IEEE 802.3bs, CAUI‑4 |
Applications
In 100G Ethernet, data center interconnect and 5G transport networks, the 100G QSFP28 BX40 4x 25G NRZ 1309.14nm-TX/1304.58nm-RX 40km Simplex LC/APC Industrial Module, Arista delivers 100Gbps transmission over SMF with a reach of 40km. 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 4x 25G-NRZ modulation, which keeps it aligned with current 100G switch silicon.
Standards and Compatibility
Compliance: QSFP28 MSA, 100G Lambda MSA, SFF‑8636, IEEE 802.3bs, CAUI‑4. 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-BX40-100G-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 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.
Package
Products are first packed into blister trays or self-sealed bags and then into cartons. Standard labels and marks are applied by default, and customized packing and labeling are available on request.
Built to Your Spec
Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.



