HPE 25GBase-SR Multi-mode Fibre 100m 850nm Duplex LC Connector SFP28 Transceiver Module – 845397-001

HPE 25GBase-SR SFP28 Multi-mode Fiber Transceiver — 845397-001

The HPE 845397-001 is a 25GBase-SR SFP28 optical transceiver module operating at 850nm over multi-mode fiber (MMF) with duplex LC connectors, supporting up to 100 meters of reach. Validated for HPE ProLiant and Aruba networking infrastructure, it delivers 25Gbps short-reach optical connectivity for data center top-of-rack and server-to-switch deployments.

Key Features

• 25GBase-SR SFP28 — 25Gbps short-reach MMF transceiver for data center server connectivity
• 850nm VCSEL optical source over OM3/OM4 multi-mode fiber up to 100 meters
• Duplex LC connector for standard MMF patch panel and structured cabling compatibility
• HPE validated for ProLiant NIC and Aruba switch SFP28 port compatibility

Product Specifications

• Part Number: 845397-001
• Manufacturer: HPE
• Form Factor: SFP28
• Speed: 25Gbps (25GBase-SR)
• Wavelength: 850nm
• Fiber Type: Multi-mode (MMF)
• Max Reach: 100m (OM4), 70m (OM3)
• Connector: Duplex LC

Transceiver & Interface Specifications

• Optical Standard: IEEE 802.3by 25GBase-SR
• Transmitter: 850nm VCSEL (Vertical-Cavity Surface-Emitting Laser)
• Fiber Compatibility: OM3 (up to 70m), OM4 (up to 100m) multi-mode fiber
• Connector Type: Duplex LC
• Form Factor: SFP28 (small form-factor pluggable 28)
• DOM: Digital Optical Monitoring supported

Use Cases

• 25GbE server-to-top-of-rack switch connectivity in HPE ProLiant data center environments
• Short-reach 25GbE uplinks over existing OM3/OM4 MMF structured cabling infrastructure
• SFP28 port population in Aruba and HPE ProLiant 25GbE NICs and switch modules
• Data center leaf-spine fabric short-reach interconnects at 25Gbps

Compatibility

• HPE ProLiant 25GbE SFP28 NICs including 631FLR-SFP28 and 640FLR-SFP28 adapters
• Aruba 8325, 8400, and CX series switches with SFP28 ports
• Compatible with IEEE 802.3by 25GBase-SR compliant switches and adapters

Frequently Asked Questions

What is the difference between 25GBase-SR and 25GBase-LR transceivers?

25GBase-SR (845397-001) uses 850nm VCSEL over multi-mode fiber for short reach up to 100m. 25GBase-LR uses 1310nm laser over single-mode fiber for long reach up to 10km. SR is ideal for data center intra-rack and row connectivity; LR suits campus or inter-building links.

Can 845397-001 be used with OM3 fiber?

Yes — 25GBase-SR supports both OM3 (up to 70m) and OM4 (up to 100m) multi-mode fiber. For links up to 70m, OM3 is fully compatible. For links between 70m and 100m, OM4 is required.

Is 845397-001 compatible with third-party 25GbE switches?

HPE transceivers are validated for HPE and Aruba infrastructure. Compatibility with third-party switches depends on the switch vendor”s transceiver validation policy. Some vendors require vendor-specific or coded transceivers.

The HPE 845397-001 25GBase-SR SFP28 transceiver delivers reliable short-reach 25GbE MMF optical connectivity for HPE ProLiant and Aruba infrastructure. Order today — in stock at the lowest price.