Broadcom QSFP-SR4-100G-E Compatible 100G QSFP28 SR4 Transceiver Module
This Broadcom QSFP-SR4-100G-E compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 850nm for up to 70m on OM3 / 100m on OM4, using MPO-12/UPC. Complete parameters and related OEM references help procurement teams match an equipment parts list to a clearly defined optical product.
OEM Part Number: QSFP-SR4-100G-EHT Part Number: QSFP-100G-SR4-E
Product Highlights
- Compatible alternative to Broadcom QSFP-SR4-100G-E
- 100G connectivity at 100Gbps
- Optical wavelength: 850nm
- Specified reach: 70m on OM3 / 100m on OM4
- MPO-12/UPC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | QSFP-100G-SR4-E |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP28 |
| Max. Data Rate | 100Gbps |
| Wavelength | 850nm |
| Max. Cable Distance | 70m@OM3/100m@OM4 |
| Connector | MPO-12/UPC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -8.4~2.4dBm |
| Minimum Receiver Power | -10.3dBm (with FEC)-5.9dBm (without FEC) |
| Power Budget | 1.9dB |
| Receiver Overload | 2.4dBm |
| Max. Power Consumption | 2.5W |
| Extinction Ratio | ≥2dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Inbuilt FEC | No |
| Bit Error Ratio (BER) | 1E-12 |
| Packaging Technology | COB (Chip on Board) Packaging |
| Protocols | IEEE 802.3bm, 100GBASE-SR4, SFF-8636 |
Applications and Optical Link Design
This coherent interface is suited to data-center interconnect, metro transport and managed DWDM links where the host platform supports the stated modulation and FEC modes. Design the optical line around the actual launch power, receiver range, OSNR requirement and span loss; the stated reach is not a substitute for a link-budget calculation. Use matching coherent modules and the appropriate DWDM channel plan at both ends.
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.
For this coherent interface, document the wavelength plan and modulation or FEC settings before commissioning. Measure span loss and verify adequate OSNR. Interoperability depends on compatible coherent modes as well as form factor, so another coherent part number must not be substituted without engineering review.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -8.4~2.4dBm; the stated optical power budget is 1.9dB. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. 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 100Gbps, wavelength 850nm, rated reach 70m on OM3 / 100m on OM4.
Broadcom Compatibility and Factory Testing
The module is checked for host recognition as QSFP-SR4-100G-E, 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
When ordering, specify QSFP-SR4-100G-E, QSFP-100G-SR4-E, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. 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 Broadcom transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QSFP-SR4-100G-E, not an original Broadcom-branded module.
Which fiber and connector are required?
Use MPO-12/UPC 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.