10/100BASE-T SFPCisco CWDM-SFP-1270-100 Compatible 1G SFP Transceiver Module
Built for hosts recognizing CWDM-SFP-1270-100, this HT-manufactured SFP module delivers 1G transmission at 1270nm. Its rated reach is 100km, with Duplex LC as the physical interface. The specifications and engineering guidance below support high-density deployments balance optical performance, port access and thermal planning, while keeping HT manufacture separate from the OEM cross-reference.
OEM Part Number: CWDM-SFP-1270-100HT Part Number: CW-SFP1G100-27
Product Highlights
- Compatible alternative to Cisco CWDM-SFP-1270-100
- 1G connectivity at 1000Mbps
- Optical wavelength: 1270nm
- Specified reach: 100km
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 ~ 70°C (32 ~ 158°F)
Specifications
| Cisco Compatible | CWDM-SFP-1270-100 |
|---|---|
| Manufacturer | HT |
| HT Part Number | CW-SFP1G100-27 |
| Form Factor | SFP |
| Max Data Rate | 1000Mbps |
| Wavelength | 1270nm |
| Max Cable Distance | 100km |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | DFB CWDM |
| Receiver Type | APD |
| Receiver Sensitivity | < -30dBm |
| SMSR | 30dB |
| TX Power | 0~5dBm |
| RX Power | -32~-8dBm |
| Power Consumption | ≤1W |
| Power Budget | 32dB |
| EMC (Electro Magnetic Compatibility) | Supported |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 ~ 70°C (32 ~ 158°F) |
| Protocols | MSA Compliant |
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 1G interface configuration must match the remote equipment; sharing a SFP 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 100km power budget. A nearby channel is not a substitute for the specified wavelength.
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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is 0~5dBm; receiver sensitivity is < -30dBm; the stated optical power budget is 32dB. 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. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 1000Mbps, wavelength 1270nm, rated reach 100km.
Ordering Information
Use CWDM-SFP-1270-100 as the compatibility cross-reference and CW-SFP1G100-27 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.
Cisco Compatibility and Factory Testing
Compatibility testing for CWDM-SFP-1270-100 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.
Frequently Asked Questions
Is this an original Cisco transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies CWDM-SFP-1270-100, not an original Cisco-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 100km, 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.
