Dell QSFP28-100G-SR4-I Compatible 100G QSFP28 SR4 Transceiver Module
Built for hosts recognizing QSFP28-100G-SR4-I, this HT-manufactured QSFP28 module delivers 100G transmission at 850nm. Its rated reach is 70m on OM3 / 100m on OM4, with MTP/MPO-12 Male as the physical interface. The specifications and engineering guidance below support project teams keep OEM references, delivery records and port schedules aligned, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: QSFP28-100G-SR4-IHT Part Number: QSFP-SR4-100G-I
Product Highlights
- Compatible alternative to Dell QSFP28-100G-SR4-I
- 100G connectivity at 103.125Gbps (4x 25.78Gbps)
- Optical wavelength: 850nm
- Specified reach: 70m on OM3 / 100m on OM4
- MTP/MPO-12 Male / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: -40 to 85°C (-40 to 185°F)
Specifications
| Dell Compatible | QSFP28-100G-SR4-I |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-SR4-100G-I |
| Form Factor | QSFP28 |
| Max Data Rate | 103.125Gbps (4x 25.78Gbps) |
| Wavelength | 850nm |
| Max Cable Distance | 70m@OM3/100m@OM4 |
| Connector | MTP/MPO-12 Male |
| Media | MMF |
| Transmitter Type | VCSEL 850nm |
| Receiver Type | PIN |
| TX Power | -6~2.4dBm |
| RX Power | -10.3~ 2.4dBm |
| Power Budget | 4.3dB |
| Extinction Ratio | ＞2dB |
| Typical Power Consumption | <2.5W |
| DDM/DOM | Supported |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Packaging Technology | COB Packaging |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Inbuilt FEC | No |
| Bit Error Ratio (BER) | 1E-12 |
| MTBF | 1,160,000 Hours |
| Protocols | IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636, RoHS, CPRI, eCPRI |
Project Documentation and Traceability
Large deployments are easier to audit when the order code, optical standard and endpoint record agree. Keep the OEM reference in the compatibility document and the HT part number on the packing list. Labels and carton groups can be arranged by rack or port plan so installers need not identify modules by appearance. For this model, the principal parameters are data rate 103.125Gbps (4x 25.78Gbps), wavelength 850nm, rated reach 70m on OM3 / 100m on OM4.
Dell Compatibility and Factory Testing
Factory verification starts with the expected QSFP28-100G-SR4-I identity and finishes with an operating host link. EEPROM data, diagnostic visibility and the stated optical parameters are assessed together. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
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 MTP/MPO-12 Male 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.
The industrial temperature rating makes this version appropriate for controlled outdoor cabinets, transport nodes and other installations exposed to wider ambient temperature variation. Adequate airflow, protected cable routing and host-platform temperature limits still apply.
For this multimode module, confirm fiber grade, modal bandwidth and total loss before commissioning. The 70m on OM3 / 100m on OM4 figure applies only under suitable cabling conditions. Inspect every MTP/MPO-12 Male mating point and match the remote optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -6~2.4dBm; the stated optical power budget is 4.3dB. 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.
Frequently Asked Questions
Is this an original Dell transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP28-100G-SR4-I, not an original Dell-branded module.
Which fiber and connector are required?
Use MTP/MPO-12 Male with MMF. The specified maximum reach is 70m on OM3 / 100m on OM4, 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.
Ordering Information
Use QSFP28-100G-SR4-I as the compatibility cross-reference and QSFP-SR4-100G-I 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.
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.
Quality Assurance and Packaging
Each QSFP28-100G-SR4-I compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
