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Arista QSFP-100G-ER 100GBASE-ER QSFP28 1310nm 40 km SMF
100 Gbps 100GBASE-ER (single lambda) QSFP28 transceiver, 1310 nm, up to 40 km SMF, 0 to 70 °C case temperature.
- Manufacturer
- Arista Networks, Inc.
- Mfr part number
- QSFP-100G-ER
- Series
- 100G QSFP28
- Category
- Fiber optic transceiver modules
- Datasheet
- QSFP-100G-ER datasheet (PDF)
QSFP-100G-ER specifications
| Attribute | Value |
|---|---|
| Part Number | QSFP-100G-ER |
| Manufacturer | Arista Networks, Inc. |
| Brand | Arista Networks |
| Standard | 100GBASE-ER (single lambda) |
| Form Factor | QSFP28, hot-swappable |
| Data Rate | 100 Gbps |
| Wavelength | 1310 nm |
| Media | Duplex single-mode (G.652) |
| Max Distance | 40 km SMF |
| Connector | Duplex LC |
| Tx Power | +1.7 to +7.1 dBm |
| Rx Power | −16 to −3.4 dBm |
| Max Power | 4.5 W |
| Case Temp | 0 °C to 70 °C |
| Dimensions | 13.5 × 18.4 × 72.4 mm |
| Reach detail | 40 km on duplex single-mode fiber |
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-ER
The Arista QSFP-100G-ER is a hot-swappable QSFP28 100GBASE-ER (single lambda) optical transceiver for 100 Gbps Ethernet over duplex single-mode (G.652), with a Duplex LC interface and reach of up to 40 km SMF. Typical uses: 100G leaf-spine fabrics, DC interconnect, 4 × 25G breakout and service-provider aggregation.
- 100 Gbps 100GBASE-ER up to 40 km SMF
- Single-lambda 100G over 40 km
- Attenuate short links to protect the receiver
- Duplex LC connector · Duplex single-mode (G.652)
- Genuine Arista optic · GST invoice · pan-India dispatch
QSFP-100G-ER: frequently asked questions
What is the Arista QSFP-100G-ER?
The Arista QSFP-100G-ER is a QSFP28 100GBASE-ER (single lambda) module from Arista Networks for 100 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-ER?
Arista specifies the QSFP-100G-ER for 40 km on duplex single-mode fiber. Arista notes that proper optical attenuation is required on shorter links to protect the receiver from damage.
What are the transmit and receive power levels of the QSFP-100G-ER?
Per Arista's published optics data sheet, the QSFP-100G-ER transmits +1.7 to +7.1 dBm and receives −16 to −3.4 dBm.
Which fiber and connector does the QSFP-100G-ER need?
The QSFP-100G-ER uses a Duplex LC connector on duplex single-mode (G.652), at 1310 nm. Both ends of the link must use the same optical standard.
Is the QSFP-100G-ER 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-ER 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-ER price in India and how do I order?
The Arista QSFP-100G-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.
How much power does the QSFP-100G-ER draw?
Arista lists maximum power of 4.5 W for the QSFP-100G-ER. 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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