STC-40027 | 800G OSFP LPO SR8 Optical Transceiver

Product Overview

The STC-40027 from Swedish Telecom Opto’s LPO Series is an advanced 800 Gb/s OSFP SR8 optical transceiver designed for short-reach, high-density data-centre and AI fabric applications. Leveraging Linear Pluggable Optics (LPO) technology, this module achieves exceptional power efficiency by removing the internal DSP and using host-based signal processing. The result is a transceiver that delivers ultra-low latency and significantly reduced power consumption compared to traditional DSP-based designs.

Supporting 8 × 100 Gb/s PAM4 lanes operating at 850 nm VCSEL wavelengths, the STC-40027 provides reliable connectivity up to 50 m over multimode fiber (MMF). It is optimized for environments where energy efficiency and performance density are critical, including AI/ML clusters, HPC interconnects, and next-generation enterprise networks.

Key Features

• 800 Gb/s total throughput using 8 × 100 Gb/s PAM4 lanes
• Linear-drive (LPO) architecture for ultra-low latency and power consumption
• Up to 50 m transmission distance over multimode fiber (MMF)
• ≤ 5.5 W typical power consumption
• Hot-pluggable OSFP form factor
• 850 nm VCSEL laser source for SR8 operation
• Compliant with IEEE 802.3db and OSFP MSA 5.0
• Supports CMIS 4.0 management interface
• Operating temperature: 0 °C to +70 °C
• RoHS 2.0 compliant and EU-tested

Applications

• Short-reach 800G links in data-centre environments (≤ 50 m)
• AI/ML and HPC cluster interconnects
• High-density leaf–spine and top-of-rack switching fabrics
• Cloud computing and enterprise core networks
• Latency-sensitive workloads requiring power-efficient optics

Standards & Compliance

• IEEE 802.3db 800GBASE-SR8
• CEI-112G-LINEAR-PAM4 electrical specification
• CMIS 4.0 management interface
• OSFP MSA 5.0 mechanical specification
• RoHS 2.0 compliant

Specifications

Why Choose EU-Tested LPO Modules

All STC-40027 modules are validated in European testing facilities to ensure power accuracy, interoperability, and stability in demanding environments. This EU testing gives operators the confidence to deploy high-speed optical links that combine energy efficiency with proven performance.