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Arista

Arista SFP-25G-SR-E-Arista | 25G SFP28 SR-E Transceiver, 850nm MMF, 30m/50m No-FEC

SFP-25G-SR-E-Arista

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Description

This Arista 25GBASE-SR-Enhanced (SR-E) SFP28 transceiver is a low-latency optic for short-reach 25GbE links over duplex multimode fibre with an LC connector. It suits latency-sensitive data centre connections such as server-to-switch and switch-to-switch links, including environments where FEC is disabled.

The module operates at 850nm over 50.0um OM3 or OM4 fibre. With FEC disabled for the lowest latency, it reaches 30m on OM3 and 50m on OM4. With FEC enabled, reach extends to 70m on OM3 and 100m on OM4. Tx power is -4.5 to 2.4 dBm, and Rx power is -5.9 to 2.4 dBm without FEC or -10.3 to 2.4 dBm with FEC. Maximum power consumption is 1.5 W, drawn from the host switch port, so no external power is required.

It is designed for Arista SFP28 (25G) ports in the standard SFP form factor. The operating case temperature range is 0 to 70 C.

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

Features

- E-Series optic with enhanced optical performance for low-latency 25G links
- Runs without FEC to reduce latency on short links
- Supports FEC for extended reach of up to 70m on OM3 and 100m on OM4
- Standard SFP28 form factor with duplex LC multimode fibre
- Powered from the host switch port with no external supply needed

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-SR-E (25GBASE-SR-Enhanced)
- Form factor: SFP28
- Connector type: LC duplex
- Wavelength: 850 nm
- Cable type: Multimode fibre (OM3/OM4), duplex
- Core size: 50.0 um
- Modal bandwidth: 2000 MHzkm (OM3), 4700 MHzkm (OM4)
- Tx power: -4.5 to 2.4 dBm
- Rx power: -5.9 to 2.4 dBm without FEC
- Rx power: -10.3 to 2.4 dBm with FEC
- Max reach without FEC: 30 m (OM3) / 50 m (OM4)
- Max reach with FEC: 70 m (OM3) / 100 m (OM4)
- Power consumption (max): 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

FAQs

Q: What reach does this transceiver support?
A: With FEC disabled (low latency), it reaches 30m on OM3 and 50m on OM4 multimode fibre. With FEC enabled, it reaches 70m on OM3 and 100m on OM4.

Q: What fibre does it need?
A: It uses duplex multimode fibre with LC connectors and a 50.0um core. OM3 and OM4 fibre are both supported, with longer reach on OM4.

Q: How does the SR-E version differ from a standard 25G SR optic?
A: The SR-E (Enhanced) E-Series optic can run without FEC to reduce latency on short links, and it supports FEC when you need longer reach.

Q: Does it need external power?
A: No. It draws a maximum of 1.5 W from the host switch port.

Q: Where can I use it?
A: It fits Arista SFP28 (25G) ports on Arista switches and suits short-reach, latency-sensitive 25GbE links within the data centre.

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