Brocade 40G-QSFP-ER4 Compatible 40G QSFP+ ER4 Transceiver Module
The 40G-QSFP-ER4 compatible module serves equipment requiring a 40G QSFP+ interface with 1310nm optics and a 40km rating. Connection is through Duplex LC. Product data, application guidance and factory verification are presented together to support project teams keep OEM references, delivery records and port schedules aligned.
OEM Part Number: 40G-QSFP-ER4HT Part Number: QSFP-ER4-40G
Product Highlights
- Compatible alternative to Brocade 40G-QSFP-ER4
- 40G connectivity at 44.6Gbps (4x 11.2Gbps)
- Optical wavelength: 1310nm
- Specified reach: 40km
- Duplex LC / SMF interface
- Operating temperature: 0 to 70°C (32 to 158°F)
- Factory compatibility verification and optical performance testing before shipment
Specifications
| Brocade Compatible | 40G-QSFP-ER4 |
|---|---|
| Manufacturer | HT |
| HT Part Number | QSFP-ER4-40G |
| Form Factor | QSFP+ |
| Max. Data Rate | 44.6Gbps (4x 11.2Gbps) |
| Wavelength | 1310nm |
| Max. Transmission Distance | 40km |
| Connector | Duplex LC |
| Media | SMF |
| Transimitter Type | DFB CWDM |
| Receiver Type | APD |
| TX Power | -2.7~4.5dBm |
| Receiver Sensitivity | <-21.2dBm |
| Power Budget | 18.5dB |
| Receiver Overload | -4.5dBm |
| Max. Power Consumption | ≤3.5W |
| Extinction Ratio | >5.5dB |
| Host FEC | Supported |
| Bit Error Ratio (BER) | 1E-12 |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Protocols | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant |
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 44.6Gbps (4x 11.2Gbps), wavelength 1310nm, rated reach 40km.
Brocade Compatibility and Factory Testing
Factory verification starts with the expected 40G-QSFP-ER4 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
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
Before deployment, check the host port type, supported data rate and firmware requirements. The 40G interface configuration must match the remote equipment; sharing a QSFP+ housing alone does not make two transceiver types interoperable.
Before commissioning, measure the complete single-mode channel against the stated budget for 40km. Inspect every Duplex LC connection and record diagnostic power where supported. Both ends must agree on rate, wavelength and optical standard.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -2.7~4.5dBm; receiver sensitivity is <-21.2dBm; the stated optical power budget is 18.5dB. 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. 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 Brocade transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 40G-QSFP-ER4, not an original Brocade-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 40km, 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 40G-QSFP-ER4 as the compatibility cross-reference and QSFP-ER4-40G 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 40G-QSFP-ER4 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.
