Cisco CWDM-SFP25G-1270-30 Compatible 25G SFP28 Transceiver Module
Built for hosts recognizing CWDM-SFP25G-1270-30, this HT-manufactured SFP28 module delivers 25G transmission at 1270nm. Its rated reach is 30km, with Duplex LC as the physical interface. The specifications and engineering guidance below support field technicians install, maintain and identify the exact compatible module, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: CWDM-SFP25G-1270-30HT Part Number: CW-SFP25G30-27
Product Highlights
- Compatible alternative to Cisco CWDM-SFP25G-1270-30
- 25G connectivity at 25.78Gbps
- Optical wavelength: 1270nm
- Specified reach: 30km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | CWDM-SFP25G-1270-30 |
|---|---|
| Manufacturer | HT |
| HT Part Number | CW-SFP25G30-27 |
| Form Factor | SFP28 |
| Max Data Rate | 25.78Gbps |
| Wavelength | 1270nm |
| Max Cable Distance | 30km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DML CWDM |
| Receiver Type | APD |
| TX Power | 0~5dBm |
| Receiver Sensitivity | <-13.5dBm |
| Power Consumption | 1.5W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| CDR | TX and RX |
| Power Budget | 13.5dB |
| FEC Function | Supported |
| Protocols | MSA Compliant, CPRI, eCPRI |
Field Installation and Maintenance
Inspect the connector and patch lead before installation, then support the fiber without pulling on the module housing. Release the latch properly during maintenance and keep dust protection on unused interfaces. If a module is removed for later use, retain its part-number label and record its original port. For this model, the principal parameters are data rate 25.78Gbps, wavelength 1270nm, rated reach 30km.
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 30km 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 0~5dBm; receiver sensitivity is <-13.5dBm; the stated optical power budget is 13.5dB. 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.
Quality Assurance and Packaging
Each CWDM-SFP25G-1270-30 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.
Cisco Compatibility and Factory Testing
Factory verification starts with the expected CWDM-SFP25G-1270-30 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.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies CWDM-SFP25G-1270-30, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 30km, 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-1270-30 as the compatibility cross-reference and CW-SFP25G30-27 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.
