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Arista QSFP-100G-XCWDM4 100GBASE-XCWDM4 QSFP28 1271-1331nm 10 km SMF
100 Gbps / 40 Gbps 100GBASE-XCWDM4 QSFP28 transceiver, 1271–1331 nm (4 lambda CWDM), up to 10 km SMF, 0 to 70 °C case temperature.
- Manufacturer
- Arista Networks, Inc.
- Mfr part number
- QSFP-100G-XCWDM4
- Series
- 100G QSFP28
- Category
- Fiber optic transceiver modules
- Datasheet
- QSFP-100G-XCWDM4 datasheet (PDF)
QSFP-100G-XCWDM4 specifications
| Attribute | Value |
|---|---|
| Part Number | QSFP-100G-XCWDM4 |
| Manufacturer | Arista Networks, Inc. |
| Brand | Arista Networks |
| Standard | 100GBASE-XCWDM4 |
| Form Factor | QSFP28, hot-swappable |
| Data Rate | 100 Gbps / 40 Gbps |
| Wavelength | 1271–1331 nm (4 lambda CWDM) |
| Media | Duplex single-mode (G.652) |
| Max Distance | 10 km SMF |
| Connector | Duplex LC |
| Tx Power | −6.5 to +2.5 dBm/lane |
| Rx Power | −13 to +2.5 dBm/lane |
| Max Power | 3.5 W |
| Case Temp | 0 °C to 70 °C |
| Dimensions | 13.5 × 18.4 × 72.4 mm |
| Reach detail | 10 km on duplex single-mode fiber; 100G/40G dual rate |
All values are from Arista Networks' published Optics Modules and Cables data sheet (Sep 2026). Confirm platform support for your switch with us before ordering.
About the Arista QSFP-100G-XCWDM4
The Arista QSFP-100G-XCWDM4 is a hot-swappable QSFP28 100GBASE-XCWDM4 optical transceiver for 100 Gbps / 40 Gbps Ethernet over duplex single-mode (G.652), with a Duplex LC interface and reach of up to 10 km SMF. Typical uses: 100G leaf-spine fabrics, DC interconnect, 4 × 25G breakout and service-provider aggregation.
- 100 Gbps / 40 Gbps 100GBASE-XCWDM4 up to 10 km SMF
- 10 km at low 3.5 W power
- 100G/40G dual rate
- Duplex LC connector · Duplex single-mode (G.652)
- Genuine Arista optic · GST invoice · pan-India dispatch
QSFP-100G-XCWDM4: frequently asked questions
What is the Arista QSFP-100G-XCWDM4?
The Arista QSFP-100G-XCWDM4 is a QSFP28 100GBASE-XCWDM4 module from Arista Networks for 100 Gbps / 40 Gbps links. It plugs into a 100G QSFP port on an Arista switch and is used for 100G leaf-spine fabrics, DC interconnect, 4 × 25G breakout and service-provider aggregation.
What is the maximum distance of the QSFP-100G-XCWDM4?
Arista specifies the QSFP-100G-XCWDM4 for 10 km on duplex single-mode fiber; 100G/40G dual rate.
What are the transmit and receive power levels of the QSFP-100G-XCWDM4?
Per Arista's published optics data sheet, the QSFP-100G-XCWDM4 transmits −6.5 to +2.5 dBm/lane and receives −13 to +2.5 dBm/lane.
Which fiber and connector does the QSFP-100G-XCWDM4 need?
The QSFP-100G-XCWDM4 uses a Duplex LC connector on duplex single-mode (G.652), at 1271–1331 nm (4 lambda CWDM). Both ends of the link must use the same optical standard.
Is the QSFP-100G-XCWDM4 compatible with my Arista switch?
It works in Arista switches with 100G QSFP ports that support this optic. Send us your switch model and EOS version and we will check it against Arista's Transceiver and Cable Guide before dispatch, so you only receive a module that works in your port.
Which Arista 100G single-mode optic should I choose?
Up to 500 m: DR or PSM4. Up to 2 km: FR, CWDM4, LRL4 or PLRL4. Up to 10 km: LR, LR4, XCWDM4. Up to 40 km: ER or ERL4. Up to 80 km: ZR4. Both ends of a link must use the same optical standard (or a pair Arista lists as interoperable).
Is your QSFP-100G-XCWDM4 genuine Arista?
Yes. Next Gen Networks supplies original Arista Networks optics, not third-party lookalikes or grey-market stock. Every unit is checked before dispatch, and we share the serial numbers on request so you can verify them in EOS ('show inventory').
What is the QSFP-100G-XCWDM4 price in India and how do I order?
The Arista QSFP-100G-XCWDM4 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.
How much power does the QSFP-100G-XCWDM4 draw?
Arista lists maximum power of 3.5 W for the QSFP-100G-XCWDM4. Check your switch's per-port power budget for dense deployments.
Documents
NextGen datasheetPDF · specs, FAQ & buying guideManufacturer datasheet
Arista family datasheet
Related Arista parts
QSFP-100G-SR4100GBASE-SR4, 70 m OM3 / 100 m OM4QSFP-100G-SR4-E100GBASE-SR4, 50 m OM4 (no FEC)QSFP-100G-XSR4100GBASE-XSR4, 150 m OM3 / 300 m OM4QSFP-100G-SR1.2100GBASE-SR1.2, 70 m OM3 / 100 m OM4QSFP-100G-SWDM4100GBASE-SWDM4, 70 m OM3 / 100 m OM4QSFP-100G-SRBD100GBASE-BIDI, 70 m OM3 / 100 m OM4Government, PSU and enterprise orders welcome. GST invoice and pan-India delivery.
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