
The 25G-SFP28-ER40 compatible module serves equipment requiring a 25G SFP28 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 mixed-vendor networks document the correct compatibility identity at each host.
OEM Part Number: 25G-SFP28-ER40HT Part Number: SFP-25GER-31
| Brocade Compatible | 25G-SFP28-ER40 |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP-25GER-31 |
| Form Factor | SFP28 |
| Max. Data Rate | 25.78Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 40km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DML 1310nm |
| Receiver Type | APD |
| TX Power | 0~6dBm |
| Minimum Receiver Power | <-19dBm |
| Power Budget | 19dB |
| Receiver Overload | -5dBm |
| Max. Power Consumption | ≤2W |
| Extinction Ratio | 4dB |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| CDR (Clock and Data Recovery) | TX & RX Built-in CDR |
| Core Size | G.652 |
| Inbuilt FEC | No |
| Packaging Technology | BOX Packaging |
| Protocols | MSA Compliant, SFF-8431, SFF-8432, SFF-8472, CPRI, eCPRI |
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 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 40km route. Keep the Duplex LC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
For this model, the specified transmit-power range is 0~6dBm; the stated optical power budget is 19dB. 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. 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.
A mixed-vendor optical link should be documented at both ends, not treated as one generic connection. Confirm which OEM identity each host expects and whether both ends use the same wavelength plan and optical standard. Related links locate equivalent hardware, but brand-specific identification must still be selected independently. For this model, the principal parameters are data rate 25.78Gbps, wavelength 1310nm, rated reach 40km.
Compatibility testing for 25G-SFP28-ER40 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.
Use 25G-SFP28-ER40 as the compatibility cross-reference and SFP-25GER-31 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.
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.
No. It is an HT-manufactured compatible alternative for equipment that specifies 25G-SFP28-ER40, not an original Brocade-branded module.
Use Duplex LC with SMF. The specified maximum reach is 40km, subject to fiber quality and total link loss.
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.
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.