United States$5,000,000+
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Y
Yancy Butler
5
Reliable 120km upstream performance. The 1490nm transmitter stays strong across the entire distance.
GLC-BX-U120-C
1000Base-BX120 SFP 1490 TX/1550 RX Cisco Compatible
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GLC-BX-U120-C
- Description:
- 1000Base-BX120 SFP 1490 TX/1550 RX Cisco Compatible
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- Brand:
- Orm
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GLC-BX-U120-C Overview
GLC-BX-U120-C is a bidirectional SFP transceiver designed to support 1G Ethernet over single-mode fiber using LC connectors with a long-range transmission capability. It employs dual wavelengths—transmitting at 1490 nm and receiving at 1310 nm—to enable simultaneous bidirectional communication over one fiber, delivering cost‐effective and reliable connectivity for telecom and enterprise applications.
This compact module conforms to standard SFP form factors and physical dimensions that are ideal for data centers, campus networks, and other demanding networking environments. It supports Ethernet protocols while meeting industry temperature ranges, making it a robust solution for long-range deployments where high performance and simplicity are key.
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GLC-BX-U120-C Specifications
- Product Type
- Transceiver
- Form Factor
- SFP
- Data Rate
- 1G
- Connector Type
- LC
- Wavelength
- 1490 nm Tx / 1310 nm Rx
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 20 km
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- N/A
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Product Name
- GLC-BX-U120-C Bidirectional SFP Transceiver
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 GLC-BX-U120-C |  CSS5-GBIC-SX-C |  10720-GE-SFP-LH-C |  GLC-BX-U60-C |  CSS5-GBIC-LX-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | GBIC | SFP | SFP | GBIC |
| Data Rate | 1G | 1G | 1G | 1G | 1G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 1490 nm Tx / 1310 nm Rx | 850 nm | 1310nm | 1490 nm (TX) / 1310 nm (RX) | 1310 nm |
| Transmission Distance | Long-Range | Short-Range | Long-Range | Long-Range | Long-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Single-mode |
| Max Distance | 20 km | 550 meters | 10 km | 60 km | 10 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | N/A | 3.5W | N/A | N/A | 3.5 W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0°C to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40°C to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco | Cisco, Juniper, Huawei, Arista | Cisco | Cisco | Cisco / Juniper / Huawei / Arista |
| Product Name | GLC-BX-U120-C Bidirectional SFP Transceiver | CSS5-GBIC-SX-C | 10720-GE-SFP-LH-C | GLC-BX-U60-C | CSS5-GBIC-LX-C |
| Height | N/A | 1.0 inches | N/A | N/A | 0.5 inches |
| Width | N/A | 2.8 inches | N/A | N/A | 3.5 inches |
| Depth | N/A | 0.8 inches | N/A | N/A | 1.5 inches |
| Weight | N/A | 0.15 lbs | N/A | N/A | 0.2 lbs |
Reviews & Ratings
Z
Zebediah Kill
4
Consistent ultra-long-haul BiDi. Pairs perfectly with D120 modules for flawless 120km single-fiber links.
A
Avery Brooks
5
Professional grade performance. Recognized instantly by Cisco hardware for high-speed, long-distance communication.
B
Bill Murray
3
Exceptional uptime at range. This module handles the long-range return path without signal degradation.
C
Conan O'Brien
4
Superior reliability. A solid investment for any network requiring massive reach on existing fiber.
D
Donald Glover
5
Strong and steady signal. These 120km transceivers deliver impressive performance for regional connectivity.
E
Eddie Murphy
5
Dependable ultra-long-range hardware. Integration was seamless and the performance has been perfect.
F
Fred Armisen
4
Top-tier BiDi SFP. The best choice for ultra-long-distance single-fiber network architecture.
Questions & Answers
What is the GLC-BX-U120-C 1000Base-BX120 SFP module?
The GLC-BX-U120-C is a Cisco-compatible 1000Base-BX120 small form-factor pluggable transceiver that delivers up to 1 Gbps over single-mode fiber with 1490 nm TX/1550 nm RX.
What does 1000Base-BX120 mean?
1000Base-BX120 denotes a gigabit Ethernet single-fiber solution with a point-to-point reach of up to 120 km using BiDi optics on a single strand of single-mode fiber.
What do 1490 nm TX and 1550 nm RX signify?
1490 nm TX indicates the transmit wavelength, while 1550 nm RX represents the receive wavelength for bidirectional communication over a single fiber.
Which type of fiber does the GLC-BX-U120-C support?
This SFP module supports single-mode fiber (SMF, ITU-T G.652) with a core diameter of 8–10 µm.