• Silver-colored Arista SFP-25G-MR-SR dual-rate 10/25g SFP28 transceiver modules with blue handles and metallic connectors
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Arista

Arista SFP-25G-MR-SR | 25G SFP28 Transceiver, Dual-Rate 10G/25G, 850nm, 100m

SFP-25G-MR-SR

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Description

The Arista SFP-25G-MR-SR is a dual-rate 10G/25G SFP28 short-reach optical transceiver with an LC duplex connector on 850nm multimode fibre. It suits short-reach data centre server-to-leaf-switch links over duplex multimode fibre, including upgrades from 10G to 25G without replacing the optics or fibre plant.

At 25G it reaches 70m over OM3 and 100m over OM4. At 10G it reaches 300m over OM3 and 400m over OM4, and it interoperates with standard 10GBASE-SR optics. It uses 50um core multimode fibre and draws a maximum of 1.5W from the host switch port, in the compact SFP form factor for high-density 25G server-facing ports.

It is designed for Arista switches with SFP28 or SFP+ ports that support 25G and 10G optics. Confirm specific switch models and EOS versions against Arista's transceiver compatibility matrix before ordering.

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

Features

- Dual-rate operation supports migration from 10G to 25G on the same optic
- Interoperates optically with 10GBASE-SR SFPs when operated at 10G
- Supports 25G up to 100m over duplex OM4 multimode fibre
- Supports 10G up to 400m over duplex OM4 multimode fibre
- Compact SFP form factor for high-density 25G server-facing switch ports
- Low maximum power draw of 1.5W per module

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

- Form factor: SFP28 (SFP)
- Data rate: dual rate 25G / 10G
- PHY type: 25GBASE-MR-SR (10/25GBASE-MR-SR dual rate)
- Wavelength: 850nm
- Connector: LC duplex
- Fibre type: multimode (MMF), 50um core
- Reach at 25G: 70m (OM3) / 100m (OM4)
- Reach at 10G: 300m (OM3) / 400m (OM4)
- Modal bandwidth: 2000 MHzkm (OM3) / 4700 MHzkm (OM4)
- Tx power: -8.4 to 2.4 dBm at 25G; -7.3 to -0.5 dBm at 10G
- Rx power: -10.3 to 2.4 dBm at 25G; -9.9 to 2.4 dBm at 10G
- Max power consumption: 1.5W
- 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
- Standards: IEEE 802.3 Ethernet; SFP+ MSA SFF-8431, 8461 and 8472; GR-20-CORE, GR-326-CORE, GR-1435-CORE
- Minimum cabling distance (IEEE): 2m

FAQs

Q: Can this optic run at both 10G and 25G?
A: Yes. It is a dual-rate module and operates at either 25G or 10G depending on the host port speed, so the same optic supports a migration from 10G to 25G.

Q: What reach can I expect at each speed?
A: At 25G the reach is 70m on OM3 and 100m on OM4. At 10G the reach is 300m on OM3 and 400m on OM4.

Q: Will it link with a standard 10GBASE-SR SFP+ optic?
A: Yes. When operated at 10G it interoperates with 10GBASE-SR SFP+ optics over duplex multimode fibre.

Q: What fibre and connector does it use?
A: It uses duplex 50um multimode fibre with an LC connector at 850nm. OM3 or OM4 cabling is supported within the stated reaches.

Q: How much power does it draw?
A: A maximum of 1.5W, supplied by the host switch port.

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