Cisco QSFP-40/100-SRBD Compatible 100G QSFP28 SM4 Transceiver Module
This Cisco QSFP-40/100-SRBD compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 850/880/910/940nm for up to 100G: 75m on OM3 / 100m on OM4 / 150m on OM540G: 240m on OM3 / 350m on OM4 / 440m on OM5, using Duplex LC. Complete parameters and related OEM references help procurement teams match an equipment parts list to a clearly defined optical product.
OEM Part Number: QSFP-40/100-SRBDHT Part Number: QSFP-MBIDI-100G
Product Highlights
- Compatible alternative to Cisco QSFP-40/100-SRBD
- 100G connectivity at Dual Rate 40 Gbps and 100 Gbps
- Optical wavelength: 850/880/910/940nm
- Specified reach: 100G: 75m on OM3 / 100m on OM4 / 150m on OM540G: 240m on OM3 / 350m on OM4 / 440m on OM5
- Duplex LC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | QSFP-40/100-SRBD |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-MBIDI-100G |
| Form Factor | QSFP28 |
| Max. Data Rate | Dual Rate 40 Gbps and 100 Gbps |
| Wavelength | 850/880/910/940nm |
| Max. Cable Distance | 100G: 75m@OM3/100m@OM4/150m@OM540G: 240m@OM3/350m@OM4/440m@OM5 |
| Connector | Duplex LC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | 100G: -7.5~2 dBm 40G: -7.5~3 dBm |
| Minimum Receiver Power | 100G: L0: -9.5dBm, L1: -9.4dBm, L2: -9.4dBm, L3: -9.4dBm 40G: L0: -12.9dBm, L1: -12.5dBm, L2: -12.2dBm, L3: -11.9dBm |
| Power Budget | 100G: 1.9dB40G: 2dB |
| Receiver Overload | 100G: 3.4 dBm40G: 2.4 dBm |
| Power Consumption40G | ≤3.5W |
| Extinction Ratio | ＞2 dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Protocols | SWDM MSA, QSFP28 MSA, IEEE802.3bm CAUI-4 |
Applications and Optical Link Design
Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The Duplex LC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.
Before deployment, check the host port type, supported data rate and firmware requirements. The 100G interface configuration must match the remote equipment; sharing a QSFP28 housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 100G: 75m on OM3 / 100m on OM4 / 150m on OM540G: 240m on OM3 / 350m on OM4 / 440m on OM5 reach. Keep the Duplex LC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 100G: -7.5~2 dBm 40G: -7.5~3 dBm; the stated optical power budget is 100G: 1.9dB40G: 2dB. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Procurement and Asset Identification
A useful purchase order identifies the host platform, expected OEM code and optical standard separately. This prevents a module with the same housing but another wavelength, reach or identification profile from being substituted. For mixed deployments, keep one order line per OEM reference and reconcile each received unit with its intended port. For this model, the principal parameters are data rate Dual Rate 40 Gbps and 100 Gbps, wavelength 850/880/910/940nm, rated reach 100G: 75m on OM3 / 100m on OM4 / 150m on OM540G: 240m on OM3 / 350m on OM4 / 440m on OM5.
Cisco Compatibility and Factory Testing
The module is checked for host recognition as QSFP-40/100-SRBD, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Ordering Information
Use QSFP-40/100-SRBD as the compatibility cross-reference and QSFP-MBIDI-100G as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Quality Assurance and Packaging
Before packing, the module receives interface inspection, identification and link checks. Protective packaging avoids pressure on the connector and latch. Customer references, rack groups and project packing lists can be added for volume orders.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-40/100-SRBD, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with MMF. The specified maximum reach is 100G: 75m on OM3 / 100m on OM4 / 150m on OM540G: 240m on OM3 / 350m on OM4 / 440m on OM5, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.