Alcatel-Lucent / Nokia SFP-25G-SR Compatible 25GBASE-SR SFP28 for 7210 SAS, 7250 IXR and 7750 SR Family

EdgeOptic's SFP-25G-SR compatible is a Nokia-coded version of the EdgeOptic 25G-SFP28-100 multi-vendor SFP28 dual-rate 10G/25G SR transceiver. SFP-25G-SR is Nokia's catalog part number for the 25GBASE-SR SFP28 used across the SR OS carrier-router and aggregation portfolio. The module is programmed with Nokia-recognized EEPROM vendor and part-number strings so SR OS reads the optic against its native transceiver table.

Optical behavior is 25GBASE-SR per IEEE 802.3by Clause 112 over duplex multi-mode fiber, with 10GBASE-SR support per IEEE 802.3ae on dual-rate SFP28 host ports. Line signaling rate is 10.3125 Gbps at 10GBASE-SR and 25.78125 Gbps at 25GBASE-SR. Reach is 100 m on OM4 and 70 m on OM3. Whether a given SR OS port accepts the downshifted 10G rate depends on the line card or MDA speed-mode configuration; confirm against the Nokia configuration guide for the target chassis.

Optical path is 850 nm VCSEL transmitter, PIN photodiode receiver, TX optical power −5 to +2.4 dBm, RX sensitivity better than −10.3 dBm, 5.3 dB link budget, LC/UPC duplex connector. Digital diagnostics are SFF-8472 compliant, exposing per-module temperature, supply voltage, TX bias, TX power and RX power through standard SR OS port optical monitoring. Power dissipation is 0.3 W, the module is hot-swappable, and the operating temperature range is 0 to 70°C commercial.

SFP-25G-SR sits across the Nokia SR OS portfolio with 25G-capable line cards: the 7750 SR service-router family, the 7250 IXR aggregation platforms, and the 7210 SAS Ethernet aggregation platforms. The Nokia SR OS hardware compatibility guide is the authoritative reference for the specific line card or MDA revisions that ship with 25G-capable SFP28 cages on each chassis. Confirm the running SR OS release against the hardware compatibility guide for the target chassis before specifying the part for a deployment, since 25G-capable card sets vary by platform release.

SFP-25G-SR is the same physical optic that Alcatel-Lucent catalogued as AL-SFP-25G-SR before Nokia acquired Alcatel-Lucent in 2016 and consolidated the optic catalog. Post-merger Nokia documentation drops the AL prefix; the bare SFP-25G-SR part number is the canonical form on the Nokia carrier-router catalog today. The AOS-based Nokia OmniSwitch enterprise line uses a separate Nokia optic catalog with its own ordering codes, so SFP-25G-SR is the SR OS portfolio part and is not the correct catalog reference for OmniSwitch 25G deployments.

Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For SR OS rollouts where SFP-25G-SR is the catalog SKU, multi-site volume pricing on 7210 SAS or 7750 SR deployments, or procurement reconciliation against a legacy AL-SFP-25G-SR spares record, contact our sales team.