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QSFP-40/100-SRBD=
100G and 40GBASE SR-BiDi QSFP Transceiver, LC, 100m OM4 MMF
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The QSFP-40/100-SRBD= is a high-performance Cisco QSFP transceiver designed to support both 40-Gigabit and 100-Gigabit Ethernet connectivity over multimode fiber using bi-directional technology. This Cisco QSFP-40/100-SRBD= module enables seamless deployment across enterprise switching, data center architectures, and high-density cloud environments. With its dual-wavelength design, it delivers 40G and 100G transmission over existing duplex MMF infrastructure, supporting distances of up to 70 meters on OM3 fiber and 100 meters on OM4 fiber, providing a cost-efficient path to higher bandwidth without parallel fiber installations.
Engineered for consistent signal integrity and broad compatibility across Cisco platforms, the QSFP 40/100 SRBD module offers low-latency transmission, high throughput, and simple plug-and-play installation. Its hot-swappable design allows rapid deployment or replacement without disrupting services, making it an ideal choice for organizations scaling their network from 40G to 100G using current multimode fiber cabling.
Dual-Rate 40G/100G Bi-Directional Connectivity
Supports both 40G and 100G transmission over standard duplex multimode fiber.
Extended-Reach MMF Support
Delivers up to 70m on OM3 and 100m on OM4 fiber.
40G/100GBASE-SRBD Performance
Optimized for high-bandwidth enterprise, aggregation, and cloud-scale environments.
Hot-Swappable Design
Enables installation or replacement without service interruption.
Low-Latency Optical Transmission
Provides stable, high-throughput connectivity for modern workloads.
The QSFP-40/100-SRBD= module is compatible with major Cisco platforms, including
This wide compatibility ensures seamless integration across enterprise, cloud, and high-density data center infrastructures.
QSFP-40/100-SRBD= price is $398.00, a 83.1% saving from the Cisco list price of $2,354.00. QSFP-40/100-SRBD= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40/100-SRBD= for additional pricing. Browse the full Cisco 100G Optical Modules series or explore all Cisco products.
To get the detailed certification, please go to the Compliance Center.
| QSFP-40/100-SRBD= |  CPAK-100G-ER4L= |  CPAK-10X10G-ERL= |  CPAK-10X10G-LR= |  CFP-100G-LR4= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | MPO | LC | LC | LC | LC |
| Data Rate | 40G / 100G | 100G | 10G | 10G | 100G |
| Depth | N/A | N/A | N/A | N/A | N/A |
| Fiber Type | Multi-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Form Factor | QSFP | QSFP28 | QSFP+ | SFP+ | CFP |
| Height | N/A | N/A | N/A | N/A | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 150m | 40 km | 80 km | 10 km | 10 km |
| Network Interface | Fiber | Fiber | Ethernet | Fiber | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | N/A | N/A | N/A | 1.5W | 8 W |
| Product Name | QSFP-40/100-SRBD= | CPAK-100G-ER4L= | CPAK-10X10G-ERL= | CPAK-10X10G-LR= | CFP-100G-LR4= |
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet / Fibre Channel | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Short-Range | Long-Range | Long-Range | Long-Range | Long-Range |
| Wavelength | 850 nm | 1310 nm | 1310 nm | 1310nm | 1310 nm |
| Weight | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | N/A | N/A | N/A |
SR-BiDi QSFP worked seamlessly for both 40G and 100G over OM4. Reliable 100m performance and simplified fiber usage.
Stable bidirectional connectivity without additional fiber runs. Great flexibility for upgrades.
Consistent signal quality and dependable short-range throughput.
Reduced cabling complexity while maintaining full bandwidth performance.
Smooth deployment and excellent compatibility with existing MMF.
Reliable SR-BiDi module delivering stable results under load.
Efficient solution for data center migrations from 40G to 100G.
The QSFP-40/100-SRBD= is a dual-rate, hot-pluggable QSFP transceiver designed for 40 Gbps and 100 Gbps Ethernet over OM4 multimode fiber up to 100 meters using LC duplex connectors.
It supports OM4 multimode fiber and delivers reliable 40 Gbps/100 Gbps links up to 100 meters over duplex LC connections.
Yes, the QSFP-40/100-SRBD= conforms to the QSFP MSA form factor and is interoperable with any QSFP-equipped switch or router that supports SR-BiDi optics.
Yes, it is dual-rate certified for IEEE 802.3bm 100 GbE and IEEE 802.3ba 40 GbE SR-BiDi links, automatically switching rates based on the host port configuration.
Power consumption is typically under 3.5 W, ensuring low-power operation while maintaining the required optical power budget for OM4 links.
It uses bidirectional operation with two 850 nm VCSEL channels operating on separate fibers, one for transmit and one for receive.
Yes, it features I²C-based DDM providing real-time monitoring of temperature, supply voltage, optical power, and transceiver bias current.
Yes, the QSFP-40/100-SRBD= module is hot-swappable, allowing installation or removal without powering down the host system.
It operates reliably in environments from 0 °C to 70 °C (32 °F to 158 °F) ambient temperature.
It is compliant with IEEE 802.3bm (100 GbE SR4), IEEE 802.3ba (40 GbE SR4), and the QSFP MSA specifications.
The transceiver uses a duplex LC connector interface for multimode fiber connections.
Check your switch datasheet for support of SR-BiDi QSFP modules and dual-rate 40 GbE/100 GbE optics; the module follows standard QSFP MSA so it’s widely supported.
Use a dry lint-free fiber cleaning tool or approved cleaning cassette to gently remove dust and debris from the LC endfaces before insertion.
While optimized for OM4 up to 100 m, the module can operate on OM3 fiber at reduced distances (up to approximately 70 m) following IEEE link loss budgets.
The module provides a link budget of around 3.5 dB, supporting reliable 100 GbE and 40 GbE transmission over OM4 fiber to 100 m.
No external drivers are needed; it is a plug-and-play optical transceiver fully managed via the host switch or router’s firmware.
Most vendors provide a lifetime or limited-warranty and 24/7 technical support—check with your supplier for specific terms.