ST-25G-SFP28-ER

25G SFP28 ER Optical Transceiver — 40km Single-Mode for Metro Aggregation

The Sate Optics ST-25G-SFP28-ER is a 25G SFP28 optical transceiver for extended-reach single-mode links up to 40km. It runs at 1310nm over duplex LC fiber with a high launch power and a -19 dBm receiver budget, for metro aggregation and long campus spans.

Why This Module

• 40km over duplex SMF: 1310nm optics with 0 ~ +6 dBm launch power
• Deep receiver budget: -19 dBm sensitivity for lossy metro spans
• DDM monitoring: real-time optical power, temperature and voltage readings, 0~70℃ commercial range

• Compatible with your platform — coded for major networking platforms, including Cisco, Juniper, Arista, Huawei, Nokia, H3C and ZTE; 100% tested before shipment.

Key Specifications

Used In

• 25G top-of-rack and aggregation switches in data centers and enterprise networks
• Server NICs and converged adapters running 25GbE
• Metro aggregation and telecom transport switches on 25G line sides
• Typical platforms: Cisco Nexus 9300 / 9200 series, Arista 7060X / 7280R series, Juniper QFX5120 / EX4650, NVIDIA Spectrum SN2000 / SN3000 series and ConnectX NICs, Huawei CloudEngine 6866, Nokia 7250 IXR, H3C S6520X / S12500 and ZTE ZXR10 5960 series.

Not sure it fits your equipment? Request a Quote and tell us your switch model — we confirm compatibility before you order.

Where It Fits

• Metro data center interconnect between sites up to 40km apart
• Regional campus backbones beyond LR reach
• Carrier aggregation networks at 25G

Every module is covered by a 3-year warranty with lifetime maintenance. Standard lead time is 3–7 days for most products, and samples are available for evaluation.