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Arista

Arista SFP-25G-LR-E-Arista | 25G SFP28 Transceiver, E-Series, 2km/10km FEC, LC

SFP-25G-LR-E-Arista

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Description

The SFP-25G-LR-E is a 25GBASE-LR-Enhanced SFP28 transceiver from the Arista E-Series optics range. It runs over duplex single-mode fibre with an LC connector at 1310 nm, and is built for low-latency 25GbE links in data centre and financial or trading environments.

What separates the E-Series from a standard 25G LR optic is its reach profile. It reaches 2 km without FEC for the lowest latency, or 10 km with FEC enabled. 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. Maximum power draw is 1.5 W from the host port, and no licence or subscription is required. The module is hot-swappable and uses the compact SFP form factor.

It fits SFP28 (25G) ports on Arista switches. Run FEC on links beyond 2 km, and leave it off within 2 km when latency matters most. Check Arista's Transceiver and Cable Guide for platform support.

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

Features

- E-Series enhanced optic for low-latency operation, with FEC optional
- Hot-swappable for simple serviceability and minimal downtime
- Compact SFP form factor for low-power 25GbE connectivity
- Single-mode LC duplex interface for reach up to 10 km
- IEEE 802.3 and MSA standards compliant

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
- Fibre type: Single-mode (SMF G.652)
- Reach: up to 2 km without FEC, up to 10 km with FEC
- Tx power: -4 to 2.0 dBm
- Rx power: -7.2 to 2.0 dBm without FEC, -13.3 to 2.0 dBm with FEC
- Maximum power consumption: 1.5 W
- Dimensions (H x W x D): 8.55 x 13.7 x 56.5 mm
- 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
- Minimum cabling distance: 2 m
- Standards: IEEE 802.3, SFF-8431, SFF-8461, SFF-8472, GR-20-CORE, GR-326-CORE, GR-1435-CORE

FAQs

Q: Does this transceiver need a licence or subscription?
A: No. It is a passive optical module and needs no licence or subscription.

Q: When should I enable FEC?
A: Enable FEC for links beyond 2 km, up to a maximum of 10 km. Leave FEC off for links within 2 km to get the lowest latency.

Q: What ports does it fit?
A: It fits SFP28 (25G) ports on Arista switches. Check Arista's Transceiver and Cable Guide for platform support.

Q: What fibre does it need?
A: It needs a single-mode duplex fibre link with LC connectors, operating at 1310 nm.

Q: How much power does it draw?
A: Maximum power consumption is 1.5 W, drawn from the host SFP28 port.

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