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Cisco

Cisco SFP-CWDM-1490-40 | 1G SFP | 1000BASE-CWDM | 1490nm | 40km | LC SMF

SKU:SFP-CWDM-1490-40

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Description

Compact CWDM SFP transceiver for 1G links over single-mode fiber. Fixed 1490 nm channel enables multiplexing via CWDM MUX/DEMUX, conserving fiber while maintaining Gigabit Ethernet performance up to 40 km. LC duplex interface and MSA-compliant SFP footprint for quick deployment in switches, routers, and media converters.

Features

- 1G CWDM optics reduce fiber usage via wavelength multiplexing
- Long-reach 40 km performance for metro and campus backhaul
- LC duplex interface for fast, tool-free changes
- Hot-swappable SFP for zero-downtime maintenance
- Standards-based CWDM grid for predictable planning

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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FAQs

Technical Specifications

FAQs

Q: Is this transceiver for single-mode or multimode fiber?
A: Single-mode fiber (SMF) with LC duplex connectors.

Q: Can I use this with a CWDM mux/demux?
A: Yes. Use the 1490 nm channel on a CWDM MUX/DEMUX to combine with other wavelengths on the same fiber.

Q: Will it work in non-Cisco switches?
A: It is MSA-based but coded for Cisco. It works in platforms that accept Cisco-coded SFPs; always check your host’s compatibility policy.

Q: Does it support DOM/DDM?
A: Yes, digital diagnostics are available on hosts that support DOM/DDM.

Q: What fiber do I need to achieve 40 km?
A: Use low-loss OS2 single-mode fiber with proper splices and connectors to meet the link budget.

Technical Specifications

- Data rate: 1 Gbps (1.25 Gbps line rate)
- Form factor: SFP (hot-swappable)
- Optical standard: 1000BASE-CWDM, ITU-T G.694.2 CWDM grid
- Wavelength: 1490 nm fixed
- Reach: up to 40 km over SMF
- Fiber type: Single-mode (OS2 recommended)
- Connector: LC duplex
- MSA compliant; supports DOM/DDM on compatible hosts

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