Cisco CWDM-SFP25G-1270-10 Compatible 25G SFP28 Transceiver Module
The CWDM-SFP25G-1270-10 compatible module serves equipment requiring a 25G SFP28 interface with 1270nm optics and a 10km 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: CWDM-SFP25G-1270-10HT Part Number: CW-SFP25G10-27
Product Highlights
- Compatible alternative to Cisco CWDM-SFP25G-1270-10
- 25G connectivity at 25.8Gbps
- Optical wavelength: 1270nm
- Specified reach: 10km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | CWDM-SFP25G-1270-10 |
|---|---|
| Manufacturer | HT |
| HT Part Number | CW-SFP25G10-27 |
| Form Factor | SFP28 |
| Max Data Rate | 25.8Gbps |
| Wavelength | 1270nm |
| Max Cable Distance | 10km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB CWDM |
| Receiver Type | PIN |
| TX Power | 0~6dBm |
| Receiver Sensitivity | <-14dBm |
| Power Consumption | 1.3W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| CDR | TX and RX |
| Power Budget | 14dB |
| FEC Function | Not Supported |
| Protocols | MSA Compliant, CPRI, eCPRI |
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 25.8Gbps, wavelength 1270nm, rated reach 10km.
Cisco Compatibility and Factory Testing
The module is checked for host recognition as CWDM-SFP25G-1270-10, 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.
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 25G interface configuration must match the remote equipment; sharing a SFP28 housing alone does not make two transceiver types interoperable.
Wavelength-selective links require the exact channel plan at both ends. Confirm that filters pass 1270nm, then include their insertion loss in the 10km power budget. A nearby channel is not a substitute for the specified wavelength.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 0~6dBm; receiver sensitivity is <-14dBm; the stated optical power budget is 14dB. 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. 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.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies CWDM-SFP25G-1270-10, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 10km, 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 CWDM-SFP25G-1270-10 as the compatibility cross-reference and CW-SFP25G10-27 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 CWDM-SFP25G-1270-10 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.
