
The 1G SFP GLC-BX120-U 120km 1490nm-TX/1550nm-RX Simplex LC/UPC Module, Cisco is a SFP optical transceiver delivering 1.25Gbps over SMF. Operating at 1490nm-TX/1550nm-RX with a Simplex LC interface, it reaches 120km and is compliant with Fast Ethernet, Gigabit Fibre Channel, MSA Compliant. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in enterprise access, campus, telecom edge and industrial network environments.
Product Highlights
- SFP form factor, 1.25Gbps data rate
- Wavelength: 1490nm-TX/1550nm-RX
- Connector: Simplex LC
- Reach: up to 120km
- Fiber media: SMF
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Cisco Compatible | GLC-BX120-U |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1490nm-TX/1550nm-RX |
| Max Cable Distance | 120km |
| Connector | Simplex LC |
| Optical Components | DFB BiDi |
| Media | SMF |
| DOM Support | Yes |
| TX Power | -1~4dBm |
| Receiver Sensitivity | < -31dBm |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
Applications
In enterprise access, campus, telecom edge and industrial network environments, the 1G SFP GLC-BX120-U 120km 1490nm-TX/1550nm-RX Simplex LC/UPC Module, Cisco delivers 1.25Gbps transmission over SMF with a reach of 120km. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of GLC-BX120-U.
Standards and Compatibility
Compliance: Fast Ethernet, Gigabit Fibre Channel, MSA Compliant. For projects standardized on Cisco hardware, this product replaces the GLC-BX120-U directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
Order this product as SFP-1G45-BX120. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.
How We Ship
Most orders travel by international express and arrive within days; palletized freight by air or sea is used for volume orders. If you prefer, we ship on your DHL, UPS or FedEx account, or deliver to your appointed agent in China for onward consolidation.
Our Testing Process
Production samples and every outgoing batch pass through bit-error-rate measurement, temperature verification and plug-in compatibility checks on mainstream switches and routers. Because we are the manufacturer, any issue found in testing is fed back to the production line immediately instead of being passed on to customers.
How We Pack
Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.



