QSFP-40G-SR-BD Cisco Compatible 40G BiDi QSFP+, 150m Duplex LC, Reuses 10G MMF
Cisco compatible QSFP-40G-SR-BD - Key Features
- Compatibility: Cisco
- Media Type: Multi-Mode Fiber (MMF) -OM3/OM4/OM5
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 150 m
- Average Link Budget: 2 dB
- Tx Wavelength: 850 nm
- Supported Data Rate: 41.25 Gbps
- DDM/DOM: Supported
- Temperature Range: Standard 0°-70°C
Cisco QSFP-40G-SR-BD Price
In Stock - Ships Next Business DayCisco compatible QSFP-40G-SR-BD Specifications
Form Factor | QSFP+ |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Multi-Mode Fiber (MMF) -OM3/OM4/OM5 |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 150 m |
Average Link Budget | 2 dB |
TX Wavelength | Dual 850/900 nm |
RX Wavelength | Dual 850/900 nm |
Supported Data Rate | 41.25 Gbps |
Supported Ethernet Applications | 40G Ethernet (41.25Gbps) |
Optical Transport Network (OTN) Applications | OTU3 (43.01Gbps), OTU3e2 (44.58Gbps) |
SDH/SONET Standards | STM-256 (39.81 Gbps) |
DDM/DOM | Supported |
Transmitter Type | VSCEL Laser |
Tx Wave Bandwidth | 36nm (Ch1:832-868nm and Ch2: 882-918nm) |
Average Launch Power (Min) Each Lane | -4 dBm |
Average Launch Power (Max) Each Lane | 5 dBm |
Receiver Type | PIN photodiode |
Average Receiver Sensitivity (Min) Each Lane | -6 dBm |
Average Receiver Sensitivity (Max) Each Lane | 3 dBm |
Receiver Overload | 3 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power | +3.3V single power supply |
Compliance | IEEE 802.3ba, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8438i, QSFP+ MSA, RoHS, SFF-8436 |
Cisco compatible QSFP-40G-SR-BD Datasheet
v3Complete technical specifications and product details
Cisco compatible QSFP-40G-SR-BD Description
EdgeOptic's QSFP-40G-SR-BD compatible is a Cisco-coded version of the EdgeOptic BIDI-40G-QSFP-150 multi-vendor 40G QSFP+ BiDi transceiver. It reaches up to 150 meters over duplex OM4 multimode fiber, or up to 100 meters over OM3, through a single duplex LC connector rather than the 8-fiber MTP/MPO interface used by QSFP-40G-SR4. The link runs 40 Gbps aggregate over the duplex LC fiber pair, with 850nm and 900nm assigned to opposite directions so the module transmits one wavelength and receives the other, letting a network team upgrading a 10GBASE-SR link from 10G to 40G reuse the existing duplex LC multimode cabling instead of pulling new MTP/MPO fiber and patch panels. The host electrical interface follows IEEE 802.3ba; the BiDi optical scheme itself is a de facto industry multimode convention rather than a clause defined within that standard. DDM/DOM diagnostics report Tx power, Rx power and module temperature per the transceiver's standard memory map, so link health is visible through the switch's normal optics monitoring commands.
The module is programmed with Cisco-compatible EEPROM. Third-party optics acceptance depends on the specific Cisco platform and software release; see the FAQ below and the platform documentation for any host-side configuration needed. It follows the QSFP+ MSA and SFF-8436 electrical and mechanical specification and the INF-8438i management interface, and carries CE marking, RoHS compliance and Class 1 laser safety per FDA regulations and IEC 60825-1. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms, the module ships next business day from EU stock with a lifetime warranty. For project-quantity pricing or alternative vendor coding, contact our sales team.
Frequently Asked Questions
What Cisco QSFP-40G-SR-BD fiber cable I should use?
Use a duplex LC to LC multimode patch cable with OM3 or OM4 fiber. OM4 supports up to 150 meters and OM3 supports up to 100 meters. Do not use a single mode patch cable or an MTP/MPO cable, since the QSFP-40G-SR-BD uses a duplex LC interface rather than the 8-fiber MTP/MPO interface used by QSFP-40G-SR4.
Where can I find Cisco QSFP-40G-SR-BD datasheet?
Cisco publishes the official QSFP-40G-SR-BD datasheet within its own transceiver module documentation on cisco.com. EdgeOptic's datasheet for this compatible module, covering the same 150 meter multimode reach and the full specification table, is available for download from this product page.
Is QSFP-40G-SR-BD EOL?
Cisco has not published a dedicated End-of-Life or End-of-Sale bulletin specifically for the QSFP-40G-SR-BD ordering code, and third-party listings are inconsistent on this point. Verify current lifecycle status against Cisco's own End-of-Life/End-of-Sale product bulletins before relying on this part number for a new large-scale deployment.
What are main Cisco QSFP-40G-SR-BD specs?
The QSFP-40G-SR-BD is a QSFP+ form factor module supporting 40G Ethernet at 41.25 Gbps over a duplex LC connector. It uses VCSEL transmitters and PIN photodiode receivers on two wavelengths, 850nm and 900nm, with DDM/DOM diagnostics, an operating temperature range of 0 to 70 degrees Celsius, and a 3.3V power supply.
What is the difference between Cisco QSFP-40G-SR-BD vs QSFP-40G-SR4?
The QSFP-40G-SR4 sends four lanes of 10 Gbps NRZ over an 8-fiber MTP/MPO parallel optics interface and supports breakout to 4x10G. The QSFP-40G-SR-BD instead sends 40 Gbps over a duplex LC interface using two wavelengths on the same fiber pair, so it is not breakout-capable. The advantage is that QSFP-40G-SR-BD can reuse duplex LC multimode fiber pairs already deployed for 10GBASE-SR links, avoiding the new MTP/MPO cabling and patch panels that QSFP-40G-SR4 requires.
Why doesn't my Cisco switch detect the QSFP-40G-SR-BD (unsupported transceiver)?
EdgeOptic codes the QSFP-40G-SR-BD with Cisco-recognized EEPROM, so it should register on supported Cisco platforms without additional configuration. If a switch still logs it as an unsupported or unidentified transceiver, this points to the platform's own third-party optics validation policy rather than a problem with the module itself. Some Cisco IOS and NX-OS releases gate third-party optics behind a switch-side command, such as service unsupported-transceiver, with exact syntax and availability varying by platform and software version. Check the specific Cisco platform's documentation for the correct command for that switch model and release, or contact our sales team if the issue persists.