Specifications
100G Transceivers for High-Performance Networks
EN-QSFP28-BXSR is a Four-Channel, Pluggable, LC Duplex, Fiber-Optic QSFP28 Transceiver for 100 Gigabit Ethernet Applications. The transceiver internally multiplexes an XLPPI 4x25G interface into two 50Gb/s electrical channels, transmitting and receiving each optically over one simplex LC fibre using bi-directional optics. It integrates four electrical data lanes in each direction into transmission over a single LC duplex fiber optic cable. Each electrical lane operates at 25.78125 Gbps and conforms to the 100GE XLPPI interface, resulting in an aggregate bandwidth of 100Gbps into a duplex LC cable.
Key Features
- Aggregate bandwidth of > 100Gbps
- Dual-wavelength VCSEL bi-directional optical interface, PAM4 2 × 50-Gb/s 850 nm/900 nm
- Duplex LC receptacle optical interface
- over 70m transmission on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF
- Compliant to the 100GbE XLPPI electrical specification per IEEE 802.3bm
- Compliant to QSFP28 SFF-8636 Specification
- Single +3.3V power supply
- Low power dissipation (Max:3.5W)
- Without digital diagnostic function
- Operating case temperature range:0℃ to 70℃
100G QSFP28 BXSR Optical Transceiver
| Parameter | Specification | Parameter | Specification |
|---|
| Form Factor | QSFP28 | Data Rate | 100Gbps (4 × 25Gbps NRZ) |
| Standard Compliance | IEEE 802.3bm (100GbE XLPPI), QSFP28 SFF-8636 compliant | Modulation | PAM4 (2×50Gb/s per wavelength) |
| Wavelength | 850nm / 900nm (dual-wavelength BiDi) | Connector | Duplex LC |
| Fiber Type | Multimode Fiber (MMF, OM3/OM4) | Max Reach | 70m (OM3), 100m (OM4) |
| Transmit Power | -6 dBm to +4.0 dBm (avg. optical power per channel) | Receiver Sensitivity | ≤ -8 dBm (per channel) |
| Optical Budget | ~1.9 dB | Lane Configuration | 4 Tx / 4 Rx lanes |
| Host Interface | QSFP28 MSA, SFF-8636 | FEC Requirement | RS-FEC (per host platform) |
| Power Supply | 3.3V | Power Consumption | ≤ 3.5W |
| Storage Temperature | -40°C to 85°C | Operating Temperature | 0°C to 70°C (Commercial) |
| Cable Type | Duplex LC multimode cable |
Connectivity examples
Switch-to-switch (leaf-spine)
This figure shows a direct connectivity between two switches using 100GBASE-SR4 QSFP28 transceivers connected by 1x multi-mode MTP to MTP patch cable.
Switch-to-server
This figure shows a direct connectivity between two switches using 100GBASE-SR4 QSFP28 transceivers connected by 1x multi-mode MTP to MTP patch cable.
Selection Guide
Which 100G Transceiver Should I Choose? Selecting the right 100G transceiver depends on distance, fiber type, and infrastructure. Use the guide below to quickly identify the best option for your deployment.
| Selection Criteria | Option | Recommended Transceivers | Fiber / Connector | Typical Use Case |
|---|---|---|---|---|
| Distance (Reach) | ≤ 100m | SR4, SR BiDi | MMF (MPO / LC) | Intra-rack, leaf-spine |
| ≤ 500m | DR, PSM4 | SMF (LC / MPO) | Data center interconnect | |
| ≤ 2km | FR, CWDM4 | SMF (LC) | DCI / aggregation | |
| 10km – 40km | LR4, ER4 | SMF (LC) | Campus / metro | |
| ≥ 80km | ZR4 | SMF (LC) | Long-haul / DCI | |
| Fiber Type | Multimode (OM3/OM4/OM5) | SR4, SR BiDi | MPO / LC | Short-range DC |
| Single-mode (OS2) | DR, FR, CWDM4, LR4, ER4, ZR4 | LC | Medium to long reach | |
| Parallel SMF | PSM4, PLR4 | MPO | Hyperscale / legacy MPO | |
| Connector Type | MPO / MTP | SR4, PSM4, PLR4 | Multi-fiber | High-density links |
| Duplex LC | CWDM4, LR4, DR, FR, ER4, ZR4 | 2 fibers | Standard deployments | |
| LC (BiDi MMF) | SR BiDi | 2 fibers | Fiber reuse / migration | |
| Optical Technology | NRZ (4×25G) | SR4, PSM4, LR4, CWDM4 | MPO / LC | Mature, widely deployed |
| PAM4 (Single Lambda) | DR, FR, LR (new gen) | LC | AI / cloud / future-ready | |
| Breakout Capability | 100G → 4×25G | SR4, PSM4, DAC, AOC | MPO / breakout cable | Server fan-out |
| Power & Thermal | 2.5W – 3.5W | SR4 | — | High-density DC |
| 3.5W – 4.5W | CWDM4, LR4 | — | Standard SMF | |
| 4.5W – 6W | ER4, ZR4 | — | Long distance |
Applications
Deployment scenarios for this module
Data Center & Enterprise Networks
High-speed connectivity for leaf-spine architectures, server aggregation, and backbone upgrades supporting growing east-west traffic.
Telecom & Service Provider Transport
Robust optical connectivity for aggregation, metro, and long-haul transport across carrier and service provider networks.
Cloud, AI & Hyperscale Infrastructure
Reliable, low-latency links designed for high-performance computing, AI workloads, and scalable cloud environments.
Quality Certification
At E.C.I. NETWORKS, all our optical transceivers are CE, FCC, RoHS, and FDA laser compliant, meeting global standards for safety, environmental responsibility, and electromagnetic performance.
Key Certifications
Emissions and immunity compliance for IT and multimedia equipment.
Verified as unintentional radiators with SDoC available.
Safety-certified and laser-classified (Class 1).
U.S. laser safety regulations.
Free from hazardous substances and environmentally responsible.
Available on selected models per regional or customer needs.
Compliance Standards
These certifications ensure our transceivers are safe, interoperable, and built to meet the highest global compliance standards across data center, telecom, and enterprise environments.
Conflict-Free Sourcing
We comply with the SEC Conflict Minerals Rule, supporting ethical sourcing practices for minerals like tantalum, tin, tungsten, and gold.
Quality Certification
At E.C.I. NETWORKS, all our optical transceivers are CE, FCC, RoHS, and FDA laser compliant, meeting global standards for safety, environmental responsibility, and electromagnetic performance.
Key Certifications
Emissions and immunity compliance for IT and multimedia equipment.
Verified as unintentional radiators with SDoC available.
Safety-certified and laser-classified (Class 1).
U.S. laser safety regulations.
Free from hazardous substances and environmentally responsible.
Available on selected models per regional or customer needs.
Compliance Standards
These certifications ensure our transceivers are safe, interoperable, and built to meet the highest global compliance standards across data center, telecom, and enterprise environments.
Conflict-Free Sourcing
We comply with the SEC Conflict Minerals Rule, supporting ethical sourcing practices for minerals like tantalum, tin, tungsten, and gold.
Performance & Reliability
We ensure our optical transceivers deliver exceptional performance and long-term reliability through rigorous testing on industry-leading equipment.
Power & Wavelength Testing
We verify signal strength and wavelength stability to ensure seamless decoding and consistent transmission across the optical path.
Traffic Testing
All transceivers undergo bit error rate (BER) and packet loss testing to guarantee zero data loss and full compliance with Ethernet and Fiber Channel standards.
Optical Performance Validation
Our modules are evaluated for signal integrity, eye diagram clarity, and BER, ensuring stable, high-quality optical transmission in all operating conditions.
End Face Inspection
Each module's fiber interface is inspected and cleaned to eliminate contamination and physical defects - a critical step for optimal signal performance and long service life.
Warranty & Compatibility
Optical Transceivers (1G–400G): Lifetime (5 Years)
Zero Risk
Using our transceivers does not void the warranty of your network equipment. Global OEM policies and consumer protection laws (Magnuson-Moss Warranty Act) prevent manufacturers from denying support based solely on the use of third-party components.
Guaranteed Compatibility
Our modules are coded and tested for seamless operation across major platforms including Cisco, Arista, Juniper, HPE, Nvidia, Huawei, and more. This rigorous validation ensures plug-and-play reliability and full compliance with OEM specifications.
Technical Support & RMA
Have an issue? We provide full technical support and hassle-free RMA on all eligible transceivers. Our team is ready to help with any technical questions about compatibility or deployment. contact our technical support support@ecin.ca
Q&A
Commonly asked questions
No. Under the Magnuson-Moss Warranty Act and similar global consumer protection laws, OEMs cannot void your equipment warranty simply because you use a third-party transceiver. Your equipment warranty remains intact.
Yes. Our QSFP28 modules can be coded for major OEM platforms (Cisco, Juniper, Arista, Nvidia, etc.) and support open networking environments including SONiC.
A compatible generic version can be provided and coded before delivery.
Common types include SR4 (MMF, short reach), PSM4 (parallel SMF), CWDM4 (SMF up to ~2km), LR4 (SMF up to ~10km), and extended reach options like ER4. Each is designed for different distances and fiber types.
Choose based on distance and fiber: SR4 for short-range multimode (data center), CWDM4 for cost-effective singlemode up to ~2km, and LR4 for longer distances up to ~10km.
Yes. Our modules are coded for the specific platform you select at purchase. They are recognized natively by the switch OS without any additional configuration or commands.
No. Our transceivers meet the same IEEE and MSA specifications as OEM modules. They deliver identical optical performance, data rates, and reach characteristics.
Yes. We offer full support, RMA service, and warranty coverage on all modules.
Resources
Downloads and documentation