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GLC-BX40-D-I-C
1000BASE-BX40-D SFP 40km Single-Fiber Cisco Compatible
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GLC-BX40-D-I-C is a 1G SFP bi-directional optical transceiver designed for extended-range connectivity over single-mode fiber. It features an LC connector and dual-wavelength operation—typically 1490 nm for transmit and 1310 nm for receive—supporting Ethernet protocols in data centers, enterprise networks, and telecom applications.
GLC-BX40-D-I-C comes in the industry-standard SFP form factor with compact physical dimensions to facilitate easy integration into high-density optical platforms. Its capability to reach distances of up to 40 km makes it ideal for long-haul links while maintaining energy efficiency and reliable performance in mission-critical infrastructures.
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| GLC-BX40-D-I-C |  GLC-SX-MMD-C |  GLC-BX-D-I-C |  GLC-BX35-U40-C |  GLC-BX-D60-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Data Rate | 1G | 1G | 1G | 1G | 1G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 1490/1310 nm | 850 nm | 1310/1490 nm | 1310/1490 nm | 1490/1550 nm |
| Transmission Distance | Extended-Range | Short-Range | Long-Range | Long-Range | Extended-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Single-mode | Single-mode |
| Max Distance | 40 km | 2200 m | 10 km | 40 km | 60 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Ethernet | Fiber | Fiber |
| Power Consumption | N/A | 1.5 W | N/A | N/A | N/A |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco | Cisco | Cisco | Cisco |
| Product Name | GLC-BX40-D-I-C | Cisco GLC-SX-MMD-C 1000BASE-SX SFP Transceiver | Cisco GLC-BX-D-I-C | GLC-BX35-U40-C | Cisco GLC-BX-D60-C |
| Height | 0.4 inches | 0.67 inches | N/A | 0.3 inches | N/A |
| Width | 1.45 inches | 1.41 inches | N/A | 0.57 inches | N/A |
| Depth | 0.83 inches | 2.31 inches | N/A | 1.1 inches | N/A |
| Weight | 0.1 lbs | 0.10 lbs | N/A | 0.1 lbs | N/A |
Stable 40km industrial downstream. Excellent reach and temperature tolerance for remote field operations.
Consistent 1490nm performance. These rugged transceivers handle the stressors of our industrial nodes.
Exceptional long-range reliability. Ideal for single-fiber links in unconditioned telecommunications cabinets.
Professional grade. Integration was smooth and the link stability has been flawless across distances.
Trustworthy industrial hardware. Provides steady throughput and high reliability for our regional networks.
Highly recommended. A dependable solution for long-range single-fiber networking in demanding settings.
Superior signal integrity. These modules maintain a rock-solid link despite extreme external temperatures.
Consistent and robust. The best way to achieve 40km reach in industrial environments.
The GLC-BX40-D-I-C is a Cisco-compatible, 1 Gbps SFP transceiver for single-fiber links up to 40 km.
It supports transmission distances up to 40 km over single-mode fiber with a single strand.
This module requires single-mode fiber (SMF) with SC connectors for optimal performance.
It operates at 1490 nm for downstream and 1310 nm for upstream, enabling bidirectional single-fiber communication.
Yes, it is fully compatible with Cisco® hardware and pass-through testing ensures seamless integration.
The transceiver supports a data rate of 1.25 Gbps (1000 BASE-BX40-D).
It uses the industry-standard small form-factor pluggable (SFP) footprint.
Yes, the module is hot-swappable, allowing installation or removal without powering down the device.
It features an SC single-fiber receptacle for both transmit and receive signals.
Ideal for enterprise LAN, metro, and access networks requiring long-haul fiber links up to 40 km.
Yes, it supports digital optical monitoring (DOM) for real-time diagnostics of temperature, voltage, and optical power.
Simply insert the module into an SFP slot until it clicks, then connect single-mode fiber using SC connectors.
It operates between –5 °C and 70 °C (23 °F to 158 °F) for standard-grade applications.
Yes, it includes a one-year limited warranty and lifetime technical support from the manufacturer.
Check your device’s hardware compatibility list (HCL) or test with a Cisco® diagnostic command after installation.
Yes, this transceiver is designed exclusively for single-mode fiber applications.
The D variant uses 1490 nm downstream/1310 nm upstream, while the U variant reverses these wavelengths for opposite link direction.