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Alcatel-Lucent Enterprise QSFP-40G-ER 40GBASE-ER4 QSFP+ 40 km SMF
40 Gbps (4 × 10G) 40GBASE-ER4 QSFP+ transceiver, 4 x CWDM lanes 1264.5-1277.5 / 1284.5-1297.5 / 1304.5-1317.5 / 1324.5-1337.5 nm, up to 40 km SMF, Ethernet. ALE-coded optic for OmniSwitch.
- Manufacturer
- Alcatel-Lucent Enterprise (ALE)
- Mfr part number
- QSFP-40G-ER
- Series
- OmniSwitch 40G QSFP+
- Category
- Fiber optic transceiver modules
- Datasheet
- QSFP-40G-ER datasheet (PDF)
QSFP-40G-ER specifications
| Attribute | Value |
|---|---|
| Part Number | QSFP-40G-ER |
| Manufacturer | Alcatel-Lucent Enterprise (ALE) |
| Brand | Alcatel-Lucent Enterprise |
| Standard | 40GBASE-ER4 |
| Form Factor | QSFP+, hot-swappable |
| Data Rate | 40 Gbps (4 × 10G) |
| Protocol | Ethernet |
| Wavelength | 4 x CWDM lanes 1264.5-1277.5 / 1284.5-1297.5 / 1304.5-1317.5 / 1324.5-1337.5 nm |
| Media | Single-mode fiber (OS2) |
| Max Distance | 40 km SMF |
| Connector | LC duplex |
| Lifecycle | Current vendor part |
| Case Temp | 0 °C to 70 °C (commercial) |
| Dimensions | 8.5 × 18.4 × 72.4 mm |
| Compliance | IEEE 802.3, SFF-8436/8636 |
| Reach detail | 40km SMF |
Values are from Alcatel-Lucent Enterprise OmniSwitch datasheets and the OmniSwitch Transceivers Guides (Oct 2026). Confirm switch model and AOS release with us before ordering.
About the Alcatel-Lucent Enterprise QSFP-40G-ER
The Alcatel-Lucent Enterprise QSFP-40G-ER is a hot-swappable QSFP+ 40GBASE-ER4 optical transceiver for 40 Gbps Ethernet links over single-mode fiber, with an LC duplex interface and reach of up to 40 km SMF. Vendor description: 40GBASE-LR4 (extended) four-channel optical QSFP+ transceiver, 40 km. It is an Alcatel-Lucent Enterprise (ALE) coded optic for OmniSwitch ports, which validate the ALE part code at insertion. Typical uses: 40G core, aggregation and data-center links on OmniSwitch 6900 / 9900.
- 40 Gbps 40GBASE-ER4 up to 40 km SMF
- Genuine ALE part for OmniSwitch QSFP+ ports
- 40GBASE-LR4 (extended) four-channel optical QSFP+ transceiver, 40 km
- LC duplex connector · Single-mode fiber
- Genuine OEM part · GST invoice · pan-India dispatch
QSFP-40G-ER: frequently asked questions
What is the Alcatel-Lucent Enterprise QSFP-40G-ER?
The QSFP-40G-ER is a QSFP+ 40GBASE-ER4 module for 40 Gbps Ethernet links. It plugs into a QSFP+ (or QSFP28 at 40G) port on an Alcatel-Lucent Enterprise OmniSwitch and is used for 40G core, aggregation and data-center links on OmniSwitch 6900 / 9900.
What is the maximum distance of the QSFP-40G-ER?
The vendor documentation lists the QSFP-40G-ER for 40km SMF.
Which fiber and connector does the QSFP-40G-ER need?
The QSFP-40G-ER uses an LC duplex connector on single-mode fiber (OS2), at 4 x CWDM lanes 1264.5-1277.5 / 1284.5-1297.5 / 1304.5-1317.5 / 1324.5-1337.5 nm. Both ends of the link must use the same optical standard.
Which OmniSwitch models support the QSFP-40G-ER?
ALE lists its transceivers per switch family in each OmniSwitch datasheet and the AOS Transceivers Guide; the QSFP-40G-ER is listed in current (2024–2026) OmniSwitch datasheets. Send us your OmniSwitch model and AOS release and we check it before dispatch, so the port accepts the optic without a 'non-ALE transceiver' warning.
Can I use a third-party SFP instead of the ALE QSFP-40G-ER?
OmniSwitch ports log a warning for non-ALE coded optics and ALE support may ask you to use ALE parts. Next Gen Networks supplies the genuine ALE QSFP-40G-ER; if you want a lower-cost ALE-coded compatible module for non-critical links, ask us and we will quote both options.
Is your QSFP-40G-ER genuine ALE?
Yes. Next Gen Networks supplies original Alcatel-Lucent Enterprise parts, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch and we share serial numbers on request so you can verify them in the switch or router transceiver inventory.
What is the QSFP-40G-ER price in India and how do I order?
The Alcatel-Lucent Enterprise QSFP-40G-ER price in India depends on quantity, delivery city and current stock. Next Gen Networks supplies it with a GST invoice (input tax credit ready) and pan-India dispatch from New Delhi. Send the part number, quantity and delivery city on WhatsApp +91-7827955775 or email Sales@nextgennetworks.in and we reply with a GST quote.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideDownload datasheet
AlcatelLucent_QSFP-40G-ER_Datasheet_NextGenNetworks.pdf
Related ALE parts
QSFP-40G-CLR40GBASE-LR4 lite, 2 km SMFQSFP-40G-LR40GBASE-LR4, 10 km SMFQSFP-40G-PSM440G PSM4 / 4x10G breakout, 2 km SMFQSFP-40G-SR40GBASE-SR4, 150 m MMFQSFP-40G-SR-BD40GBASE-SR BiDi, 150 m MMFQSFP-4X10G-SR40GBASE-SR4 breakout to 4x10GBASE-SR, 400 m MMFTelecom, government, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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