H3C SFP-25GSR-85-E Compatible 25G SFP28 SR Transceiver Module
Built for hosts recognizing SFP-25GSR-85-E, this HT-manufactured SFP28 module delivers 25G transmission at 850nm. Its rated reach is 70m on OM3 / 100m on OM4, with Duplex LC/UPC as the physical interface. The specifications and engineering guidance below support procurement teams match an equipment parts list to a clearly defined optical product, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: SFP-25GSR-85-EHT Part Number: SFP-25GSR-85-E
Product Highlights
- Compatible alternative to H3C SFP-25GSR-85-E
- 25G connectivity at 25Gbps
- Optical wavelength: 850nm
- Specified reach: 70m on OM3 / 100m on OM4
- Duplex LC/UPC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| HT Part Number | SFP-25GSR-85-E |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP28 |
| Max. Data Rate | 25Gbps |
| Wavelength | 850nm |
| Max. Cable Distance | 70m@OM3/100m@OM4 |
| Connector | Duplex LC/UPC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -7.9~1.9dBm |
| Minimum Receiver Power | <-6dBm |
| Power Budget | 1.9dB |
| Receiver Overload | 2.4dBm |
| TX Power | -4.5~2.4 dBm |
| Minimum Receiver Power | -10.3 dBm (with FEC)-5.9 dBm (without FEC) |
| Power Budget | 5.8 dB (with FEC)1.4 dB (without FEC) |
| Receiver Overload | 2.4 dBm |
| Max. Power Consumption | 1.2W |
| Extinction Ratio | ≥2dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 25G-NRZ |
| Modulation (Optical) | 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 | 25GE SR Lite, 100G SR4 fan out to 4x25GE SR, eCPRI, SFP28 MSA, SFF-8472 |
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 Duplex LC/UPC 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 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.
The multimode channel should use the fiber grade associated with the stated 70m on OM3 / 100m on OM4 reach. Keep the Duplex LC/UPC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -7.9~1.9dBm; 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 25Gbps, wavelength 850nm, rated reach 70m on OM3 / 100m on OM4.
H3C Compatibility and Factory Testing
Compatibility testing for SFP-25GSR-85-E 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.
Ordering Information
When ordering, specify SFP-25GSR-85-E, SFP-25GSR-85-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
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.
Frequently Asked Questions
Is this an original H3C transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies SFP-25GSR-85-E, not an original H3C-branded module.
Which fiber and connector are required?
Use Duplex LC/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.