• Silver-colored Arista QSFP-40G-SR4 SFP+ transceiver modules with blue plastic handles and metallic connectors for 40GBASE-SR4 use
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Arista

Arista QSFP-40G-SR4 | 40GBASE-SR4 QSFP+ Transceiver, 850nm, MPO-12, 150m

Arista QSFP-40G-SR4 | 40GBASE-SR4 QSFP+ Transceiver, 850nm, MPO-12, 150m

QSFP-40G-SR4

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Description

The Arista QSFP-40G-SR4 is a 40GBASE-SR4 QSFP+ optical transceiver delivering 40 Gbps aggregate throughput over parallel multimode fibre using four independent 10G lanes at 850nm. Designed for high-density data centre, campus, and cloud deployments, it supports reaches of up to 100m over OM3 MMF and 150m over OM4 MMF via an MPO-12 UPC connector — making it ideal for intra-rack and short-reach inter-rack connectivity in enterprise environments.

Compliant with IEEE 802.3ba 40GBASE-SR4, QSFP+ MSA, and SFF-8436 standards, the module is fully interoperable with standard 40GBASE-SR4 interfaces and includes Digital Diagnostics Monitoring (DDM) via I2C for real-time visibility into temperature, voltage, and optical power. Its hot-swappable design minimises downtime during installation or replacement. Note: this module does not support 4x10G breakout — use QSFP-4x10G-SR for breakout applications. Available now at iptrading.com.au — your local source for enterprise-grade networking solutions.

Features

- Four independent 10G transmitters and receivers deliver aggregate 40 Gbps throughput
- MPO-12 UPC connector supports parallel multimode fibre (OM3 and OM4)
- Digital Diagnostics Monitoring (DDM) provides real-time visibility into temperature, voltage, TX/RX power, and bias current via I2C
- Hot-swappable design maximises uptime and simplifies field serviceability
- Fully compliant with IEEE 802.3ba 40GBASE-SR4, QSFP+ MSA, and SFF-8436 standards
- Interoperable with all standard 40GBASE-SR4 switch and router interfaces
- Suited for data centre top-of-rack, campus aggregation, cloud, and HPC interconnects
- Does not support 4×10G breakout mode — use QSFP-4x10G-SR for breakout applications

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

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

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- Form Factor: QSFP+
- Data Rate: 40 Gbps (4 × 10G lanes)
- Standard: IEEE 802.3ba 40GBASE-SR4
- Wavelength: 850nm
- Connector: MPO-12 UPC
- Fibre Type: Multimode Fibre (MMF)
- Max Reach: 100m over OM3 MMF
- Max Reach: 150m over OM4 MMF
- Digital Diagnostics Monitoring (DDM/DOM): Yes, via I2C interface
- Hot-Swappable: Yes
- Compliance: IEEE 802.3ba, QSFP+ MSA, SFF-8436

FAQs

Q: What fibre type and maximum distance does the QSFP-40G-SR4 support?
A: The QSFP-40G-SR4 supports multimode fibre (MMF) only — up to 100 metres over OM3 and up to 150 metres over OM4. It is not compatible with single-mode fibre.

Q: Does this transceiver support 4×10G breakout cabling?
A: No. The QSFP-40G-SR4 operates as a single 40G link only. If you require 4×10G breakout capability, Arista's QSFP-4x10G-SR module is the appropriate choice.

Q: What connector type does the QSFP-40G-SR4 use?
A: It uses an MPO-12 UPC (Ultra Physical Contact) connector, which is the standard parallel fibre connector used with 40GBASE-SR4 transceivers.

Q: Is the QSFP-40G-SR4 compatible with non-Arista switches and routers?
A: Yes. The module complies with IEEE 802.3ba, QSFP+ MSA, and SFF-8436 standards, making it interoperable with any equipment that supports the 40GBASE-SR4 standard. Compatibility with third-party platforms may depend on the vendor's optics policy.

Q: Does the QSFP-40G-SR4 support Digital Diagnostics Monitoring?
A: Yes. The transceiver includes DDM/DOM support via I2C, allowing network management systems to monitor real-time parameters including temperature, supply voltage, transmit/receive optical power, and laser bias current.

Q: Can I purchase the Arista QSFP-40G-SR4 in Australia through IP Trading?
A: Yes. IP Trading (iptrading.com.au) stocks Arista transceivers and supplies enterprise networking hardware to Australian businesses. Contact the team for pricing, availability, and volume enquiries.

Datasheet

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