• Silver-colored arista sfp-25g-lr-e 25g sfp28 single-mode transceiver modules with blue handles and metallic connectors
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Arista

Arista SFP-25G-LR-E | 25G SFP28 Transceiver, Single-Mode, 10km, E-Series

SFP-25G-LR-E

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Description

The SFP-25G-LR-E is a 25GBASE-LR-Enhanced SFP28 transceiver from Arista's low-latency E-Series. It carries 25GbE over duplex single-mode fibre (G.652) using an LC connector and a 1310nm wavelength, making it suited to latency-sensitive data centre and trading environments.

Reach depends on how the link is run. Without FEC it covers up to 2km for the lowest latency, and with FEC enabled it reaches up to 10km. Transmit power is -4 to 2.0 dBm, and receive power is -7.2 to 2.0 dBm without FEC or -13.3 to 2.0 dBm with FEC. The module draws up to 1.5 W from the host port, and the SFP form factor measures 8.55 x 13.7 x 56.5 mm.

It fits SFP28 ports on Arista switches and complies with IEEE 802.3 and the SFP+ MSA (SFF-8431, 8461, 8472). Supported platforms vary, so check Arista's Transceiver and Cable Guide for your switch model.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- E-Series Enhanced optic designed for low latency
- Runs without FEC for up to 2km to keep latency down
- Runs with FEC for up to 10km over duplex single-mode fibre
- Duplex LC connector over 1310nm single-mode fibre
- Laser Class 1 or 1M, RoHS and WEEE compliant
- RCM certified for use in Australia

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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Technical Specifications

FAQs

Technical Specifications

- PHY type: 25GBASE-LR-E (25GBASE-LR-Enhanced)
- Form factor: SFP (SFP28)
- Connector type: LC duplex
- Wavelength: 1310 nm
- Cable type: single-mode fibre (SMF G.652)
- Max reach: 2 km without FEC, or 10 km with FEC
- Tx power: -4 to 2.0 dBm
- Rx power: -7.2 to 2.0 dBm without FEC, or -13.3 to 2.0 dBm with FEC
- Dimensions (H x W x D): 8.55 x 13.7 x 56.5 mm
- Max power consumption: 1.5 W
- Operating case temperature: 0 to 70 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 95%
- Operating altitude: 0 to 10,000 ft
- Compliance: IEEE 802.3 Ethernet
- Compliance: SFP+ MSA SFF-8431, 8461, 8472
- Safety: EN 62368-1:2014 + A11:2017, IEC 62368-1:2014, Laser Class 1 or 1M (IEC/EN 60825-1)
- EMC: FCC Part 15 Subpart B Class A, ICES-003 Issue 7, EN 55032:2015, EN 55035:2017
- Certifications: CE, KCC, RCM, UKCA

FAQs

Q: What is the difference between 2km and 10km operation?
A: Without FEC the link reaches up to 2km and gives the lowest latency. With FEC enabled the same optic reaches up to 10km, at the cost of the extra latency FEC adds.

Q: What fibre and connector does it use?
A: It uses duplex single-mode fibre (G.652) with an LC connector at 1310nm.

Q: What does the E-Series designation mean?
A: E-Series optics are the Enhanced, low-latency versions of Arista's 25G modules. This one is built for latency-sensitive links and can run without FEC for short reach.

Q: Which ports does it fit?
A: It fits SFP28 (25G SFP) ports on Arista switches. Supported platforms vary, so confirm your switch model in Arista's Transceiver and Cable Guide.

Q: How much power does it draw?
A: It draws up to 1.5 W, supplied by the host SFP28 port.

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