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GLC-BX-U40-C
- Description:
- 1000Base-BX40 SFP 1310 TX/1490 RX Cisco Compatible
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3 Year Extended Warranty
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All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
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GLC-BX-U40-C Overview
GLC-BX-U40-C is a SFP transceiver that delivers 1G Ethernet connectivity using dual wavelengths of 1310 nm for transmit and 1550 nm for receive over a single strand of single-mode fiber. It features an LC connector and is engineered for extended transmission distances of up to 40 km, making it ideal for long-haul data transport in data centers, enterprise networks, and telecom infrastructures.
This module adheres to a compact SFP form factor and is designed to support Ethernet protocols reliably in demanding optical networking environments. Its proven performance under standard operating conditions makes the GLC-BX-U40-C a dependable solution for modern fiber-optic applications.
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GLC-BX-U40-C Specifications
| Product Type | Transceiver |
| Form Factor | SFP |
| Data Rate | 1G |
| Connector Type | LC |
| Wavelength | 1310/1550 nm |
| Transmission Distance | Extended-Range |
| Fiber Type | Single-mode |
| Max Distance | 40 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-U40-C |
| 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
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| Compatibility | Cisco / Juniper / Huawei / Arista | N/A | Cisco | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | N/A | LC | LC | SC |
| Data Rate | 10G | 100G | 1G | 10G | 10G |
| Depth | 0.85 inches | N/A | N/A | N/A | N/A |
| Fiber Type | Multi-mode | N/A | Single-mode | Single-mode | Single-mode |
| Form Factor | SFP+ | QSFP28 | SFP | SFP+ | SFP+ |
| Height | 0.55 inches | N/A | N/A | N/A | N/A |
| Input Voltage | 3.3V | N/A | 3.3V | 3.3V | 3.3V |
| Max Distance | 300 meters | 3 meters | 40 km | 35.8 km | 10 km |
| Network Interface | Ethernet | Ethernet | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 3.5W | N/A | N/A | 3.5 W | N/A |
| Product Name | JD102B 10G SFP+ Transceiver Module | CXP-100G-CU3M | GLC-BX-U40-C | ONS-SC+10G-35.8-C | ONS-SC+10G-38.9-C |
| Product Type | Transceiver | Direct Attach Copper Cable Assembly | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Short-Range | Short-Range | Extended-Range | Long-Range | Long-Range |
| Wavelength | 850 nm | N/A | 1310/1550 nm | 1310 nm | 1310 nm |
| Weight | 0.08 lbs | N/A | N/A | N/A | N/A |
| Width | 0.72 inches | N/A | N/A | N/A | N/A |
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Questions & Answers
Q
What is the Cisco-Compatible GLC-BX-U40-C SFP module?
A
The GLC-BX-U40-C is a Cisco-compatible 1000Base-BX40 Small Form-Factor Pluggable (SFP) transceiver that enables single-fiber bi-directional Gigabit Ethernet links over single-mode fiber.
Q
What transmission speed does the GLC-BX-U40-C support?
A
The GLC-BX-U40-C supports full-duplex data rates up to 1.25 Gbps, compliant with IEEE 802.3z Gigabit Ethernet standards.
Q
What wavelength does the GLC-BX-U40-C use for TX and RX?
A
It transmits data at 1310 nm (TX) and receives data at 1490 nm (RX) over a single-mode fiber strand.
Q
How far can the GLC-BX-U40-C transmit data?
A
It supports link distances up to 40 km over standard single-mode fiber (SMF) with a maximum link budget of 23 dB.
Q
Is the GLC-BX-U40-C module single-mode or multi-mode?
A
The GLC-BX-U40-C is designed exclusively for single-mode fiber (SMF) applications; it is not compatible with multi-mode fiber.
Q
Which Cisco devices are compatible with the GLC-BX-U40-C?
A
It is compatible with Cisco switches and routers featuring SFP ports that support 1000Base-BX40 transceivers, including Catalyst and ASR series.
Q
Can I hot-swap the GLC-BX-U40-C without downtime?
A
Yes. The GLC-BX-U40-C is hot-pluggable, allowing you to install or remove it while your Cisco equipment remains powered on.
Q
What connector type does the GLC-BX-U40-C use?
A
It uses a standard LC simplex connector for single-fiber bi-directional transmission.
Q
What protocols are supported by the GLC-BX-U40-C?
A
It supports IEEE 802.3z Gigabit Ethernet (1000Base-BX40) and is interoperable with Gigabit Ethernet switching and routing protocols.
Q
What is the power consumption of the GLC-BX-U40-C?
A
The typical power consumption is ≤1.0 W, ensuring energy-efficient operation in high-density deployments.
Q
What is the operating temperature range of the GLC-BX-U40-C?
A
It operates reliably between 0 °C and 70 °C (32 °F to 158 °F), suitable for standard data center environments.
Q
What is the MTBF of the GLC-BX-U40-C?
A
The Mean Time Between Failures (MTBF) exceeds 1,000,000 hours, providing high availability for critical links.
Q
How do I install the GLC-BX-U40-C in a switch or router?
A
Align the module with the SFP slot, gently insert until it clicks, and secure the fiber cable into the LC connector; no special tools are required.
Q
Do I need a special fiber cable for the GLC-BX-U40-C?
A
Use standard single-mode fiber (SMF) patch cables with LC simplex connectors; no specialized cable types are necessary.
Q
Does the GLC-BX-U40-C come with a warranty?
A
Yes. It includes a one-year limited warranty covering manufacturing defects and ensures Cisco compatibility.
Q
How does the GLC-BX-U40-C differ from genuine Cisco transceivers?
A
The GLC-BX-U40-C offers the same performance, interoperability, and Cisco-style compatibility at a lower cost as a third-party alternative.
