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Cisco

Cisco QSFP-100G-4W40-I | 100G QSFP28 4WDM-40 MSA, LAN-WDM ~1295–1309 nm, 40 km SMF, Duplex LC, -40 to +85C

SKU:QSFP-100G-4W40-I

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Description

QSFP28 100G 4WDM-40 transceiver for 40 km single‑mode runs over duplex LC, using LAN‑WDM wavelengths. Industrial temperature variant for harsh environments (-40 to +85C). Ideal for long metro or campus links where extended temperature support is required.

Features

- Extended 40 km reach over SMF with duplex LC
- Industrial temperature range for harsh environments
- LAN-WDM optics for low chromatic dispersion over long spans
- QSFP28 footprint for high-density switching and routing
- DOM/diagnostics for simplified monitoring

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 4WDM-40 the same as LR4?
A: No. Both use LAN-WDM and duplex LC, but LR4 is typically specified for ~10 km, while 4WDM-40 targets up to 40 km (with RS-FEC).

Q: Does this module require FEC?
A: Yes. RS-FEC on the host port is required by the 4WDM-40 MSA for 40 km operation.

Q: What fiber and connector are needed?
A: Single-mode fiber (G.652) with a duplex LC connection.

Q: Will it work in any QSFP28 100G port?
A: Use in QSFP28 ports that support 100G 4WDM-40. Check platform compatibility or request appropriate coding if needed.

Q: What is the temperature rating?
A: Industrial: -40 to +85C.

Technical Specifications

- Port speed: 100 Gigabit Ethernet
- Form factor: QSFP28
- Optical standard: 100G 4WDM-40 MSA
- Wavelengths: LAN-WDM (~1295–1309 nm, 4 channels)
- Connector: Duplex LC
- Fiber type: Single-Mode (G.652)
- Reach: up to 40 km (with host RS-FEC)
- Operating temperature: -40 to +85C (Industrial)
- Digital diagnostics: DOM/DDM supported

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