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DWDM-SFP-3977-120-C
1000BASE-DWDM SFP 1539.77nm 120KM Cisco Compatible
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DWDM-SFP-3977-120-C is an SFP transceiver designed for dense wavelength division multiplexing (DWDM) systems, offering a 1G data rate and an LC connector interface. Built to support Ethernet and Fibre Channel protocols, this compact module features precise physical dimensions and is optimized for use in data centers, enterprise networks, and telecom applications.
This DWDM SFP module delivers long-range performance over single-mode fiber, achieving extended transmission distances suitable for high-density optical networks. Its robust design and compatibility with major vendors make it an ideal solution for network operators seeking reliable, high-performance connectivity in DWDM environments.
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| DWDM-SFP-3977-120-C |  DWDM-SFP-3033-120-C |  DWDM-SFP-3819-120-C |  DWDM-SFP-4532-C |  DWDM-SFP-4294-120-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 | 1550nm | 1550 nm | 1550 nm | 1550 nm | 1550 nm |
| Transmission Distance | Long-Range | Long-Range | Long-Range | Long-Range | Long-Range |
| Fiber Type | Single-mode | Single-mode | Single-mode | Single-mode | Single-mode |
| Max Distance | 80 km | 120 km | 120 km | 80 km | 80 km |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet, Fibre Channel | Ethernet | Ethernet, Fibre Channel | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Ethernet |
| Power Consumption | N/A | 2.7W | N/A | 2.2 W | 1.5W |
| Operating Temperature | 0 to 70°C | -40 to 85°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, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | DWDM-SFP-3977-120-C | DWDM-SFP-3033-120-C | DWDM-SFP-3819-120-C | DWDM-SFP-4532-C | DWDM-SFP-4294-120-C |
| Height | N/A | 0.34 inches | N/A | 0.13 inches | N/A |
| Width | N/A | 0.53 inches | N/A | 0.55 inches | N/A |
| Depth | N/A | 2.20 inches | N/A | 1.76 inches | N/A |
| Weight | N/A | 0.1 lbs | N/A | 0.08 lbs | N/A |
Precise 1539.77nm wavelength for 120KM. Integrated flawlessly with excellent signal-to-noise ratios over extreme distances. Very stable performance.
Reliable ultra-long-haul solution. Achieved seamless connectivity across remote sites. Crucial stability for our high-capacity transport layers.
Impressive Cisco compatibility. Handled traffic spikes without signal degradation. Trustworthy option for enterprise-level fiber optic backbones.
Exceptional value for 120KM spans. Accuracy ensures zero interference in our dense multiplexing environment. Perfect power levels.
Steady 120KM performance. Reliable core transport optics. Excellent choice for engineers seeking high-quality, long-range DWDM modules.
Robust DWDM optics. Plug-and-play setup and the 1539.77nm link remains stable. Great long-distance performance for the price.
The DWDM-SFP-3977-120-C is a Cisco-compatible 1000BASE-DWDM small form-factor pluggable transceiver operating at 1539.77 nm for single-mode fiber links up to 120 km.
This module supports a 1.25 Gbps nominal data rate compliant with IEEE 802.3ah 1000BASE-DWDM standards.
The DWDM-SFP-3977-120-C operates at the ITU channel 39 wavelength of 1539.77 nm for ultra-dense channel spacing.
The DWDM-SFP-3977-120-C reliably transmits up to 120 km over ITU-T G.652 single-mode fiber.
This 1000BASE-DWDM SFP is optimized for ITU-T G.652 single-mode fiber with a nominal core diameter of 9 μm.
Yes, it is fully compatible with Cisco switches and routers that support 1000BASE-DWDM SFP modules.
Yes, it features digital diagnostics monitoring to report real-time temperature, optical power, and voltage via I²C interface.
The module operates between 0 °C and 70 °C (standard commercial range) to ensure reliable performance in data-center environments.
Typical power consumption is less than 1 W, making it energy-efficient for high-density deployments.
This SFP has a mean time between failures (MTBF) exceeding 1,000,000 hours under normal operating conditions.
Yes, it conforms to the SFP MSA, ensuring standardized mechanical, electrical, and optical specifications.
Yes, the DWDM-SFP-3977-120-C supports hot-plug installation and removal without system shutdown.
Insert the module into an empty SFP slot until it clicks into place, then configure your interface for 1000BASE-DWDM on your device.
It is ideal for long-haul metro and core networks, DWDM channel add/drop multiplexing, and high-capacity data center interconnects.
This module includes a one-year limited warranty against manufacturing defects and premature failure.
Customers can return or exchange the module within 30 days of receipt, subject to our standard return merchandise authorization procedures.
Check your device’s hardware guide or software compatibility matrix for support of Cisco-compatible 1000BASE-DWDM SFPs at 1539.77 nm.
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