1G SFP GLC-BX-20U 20km 1310nm-TX/1550nm-RX Simplex LC/UPC Module, Cisco

Designed for enterprise access, campus, telecom edge and industrial network environments, the 1G SFP GLC-BX-20U 20km 1310nm-TX/1550nm-RX Simplex LC/UPC Module, Cisco provides 1.25Gbps throughput in a SFP form factor. It operates at 1310nm-TX/1550nm-RX over SMF through a Simplex LC/UPC connector and supports link lengths up to 20km. The module meets Fast Ethernet, Gigabit Fibre Channel, MSA Compliant and includes digital diagnostic monitoring for live status readout.
Product Highlights
- SFP form factor, 1.25Gbps data rate
- Wavelength: 1310nm-TX/1550nm-RX
- Connector: Simplex LC/UPC
- Reach: up to 20km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | GLC-BX-20U |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1310nm-TX/1550nm-RX |
| Max. Cable Distance | 20km |
| Connector | Simplex LC/UPC |
| Media | SMF |
| Transmitter Type | DFB BiDi |
| Receiver Type | PIN |
| TX Power | -9~-3dBm |
| Minimum Receiver Power | <-20dBm |
| Power Budget | 11dB |
| Receiver Overload | -3dBm |
| Max. Power Consumption | 1W |
| Extinction Ratio | 9dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Bit Error Ratio (BER) | 1E-12 |
| Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
Applications
Built for enterprise access, campus, telecom edge and industrial network environments, this SFP module carries 1.25Gbps over SMF up to 20km per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. It is interoperable with Cisco platforms and replaces the Cisco part GLC-BX-20U directly.
Standards and Compatibility
On the compatibility side, this unit is the practical equivalent of the Cisco part GLC-BX-20U and works in Cisco systems out of the box. Standards compliance covers Fast Ethernet, Gigabit Fibre Channel, MSA Compliant.
Ordering Information
Order this product as SFP-1G35-BX20. 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.
Quality Assurance
Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.
Packaging
Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.
OEM and Custom Orders
We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.
Delivery
Goods are normally sent by courier such as DHL, UPS, FedEx, TNT or EMS; air and sea freight are also available on request. Commonly used items are kept in stock for immediate shipment, and out-of-stock items are usually delivered within a few working days. We can also ship on your courier account or hand goods to your appointed forwarder.
1G SFP GLC-BX-20U 20km