Brocade E100G-QSFP-ESR4 Compatible 100G QSFP28 ESR4 Transceiver Module

This Brocade E100G-QSFP-ESR4 compatible transceiver provides 100G connectivity in a hot-swappable QSFP28 package. Its optical design operates at 850nm for up to 200m on OM3 / 300m on OM4, using MTP/MPO-12. Complete parameters and related OEM references help high-density deployments balance optical performance, port access and thermal planning.
OEM Part Number: E100G-QSFP-ESR4HT Part Number: QSFP-ESR4-100G
Product Highlights
- Compatible alternative to Brocade E100G-QSFP-ESR4
- 100G connectivity at 103.125Gbps (4x 25.78Gbps)
- Optical wavelength: 850nm
- Specified reach: 200m on OM3 / 300m on OM4
- MTP/MPO-12 / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Brocade Compatible | E100G-QSFP-ESR4 |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-ESR4-100G |
| Form Factor | QSFP28 |
| Max Data Rate | 103.125Gbps (4x 25.78Gbps) |
| Wavelengths | 850nm |
| Max Cable Distance | 200m@OM3/300m@OM4 |
| Connector | MTP/MPO-12 |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -4~4dBm |
| RX Power | -12~2.4dBm |
| Power Consumption | ≤2.5W |
| Extinction Ratio | >2dB |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Inbuilt FEC | Supported |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 4x 25G-NRZ |
| Modulation (Optical) | 4x 25G-NRZ |
| Core Size | 50um/125um |
| Packaging Technology | COB Packaging |
| Protocols | IEEE 802.3bm, QSFP28 MSA, SFF-8665, SFF-8636, SFF-8679 |
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 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.
For this multimode module, confirm fiber grade, modal bandwidth and total loss before commissioning. The 200m on OM3 / 300m on OM4 figure applies only under suitable cabling conditions. Inspect every MTP/MPO-12 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 -4~4dBm. 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.
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 200m on OM3 / 300m on OM4.
Ordering Information
When ordering, specify E100G-QSFP-ESR4, QSFP-ESR4-100G, 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.
Brocade Compatibility and Factory Testing
Compatibility testing for E100G-QSFP-ESR4 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 Brocade transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies E100G-QSFP-ESR4, not an original Brocade-branded module.
Which fiber and connector are required?
Use MTP/MPO-12 with MMF. The specified maximum reach is 200m on OM3 / 300m 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.
E100G-QSFP-ESR4