100G-QSFP28-SR4-IExtreme 100G-QSFP28-SR4-I Compatible 100G QSFP28 SR4 Transceiver Module
Built for hosts recognizing 100G-QSFP28-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 high-density deployments balance optical performance, port access and thermal planning, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: 100G-QSFP28-SR4-IHT Part Number: QSFP-SR4-100G-I
Product Highlights
- Compatible alternative to Extreme 100G-QSFP28-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
| Extreme Compatible | 100G-QSFP28-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 |
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.
Quality Assurance and Packaging
Quality control covers the optical or electrical interface, host identification and operating link. The verified unit is then individually protected and cartoned. Customer references, rack groups and project packing lists can be added for volume orders.
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. Digital diagnostics make later maintenance easier when baseline values are captured at installation. Save the initial readings with the port and OEM reference, then investigate meaningful changes rather than reacting to a single transient value. Diagnostic support depends on the host as well as the module, so unavailable fields should be confirmed with the platform documentation. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 103.125Gbps (4x 25.78Gbps), wavelength 850nm, rated reach 70m on OM3 / 100m on OM4.
Ordering Information
Quote HT part number QSFP-SR4-100G-I together with OEM reference 100G-QSFP28-SR4-I and quantity. Add the host model and software release when pre-order verification is required. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Extreme Compatibility and Factory Testing
Compatibility testing for 100G-QSFP28-SR4-I combines identification with a live link and available transmit, receive and alarm information. Connector condition is inspected separately. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original Extreme transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 100G-QSFP28-SR4-I, not an original Extreme-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.
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.
