845398-B21 HPE 25GB SFP28 SR 100m network transceiver module 25000 Mbit/s

Name: 845398-B21 HPE 25GB SFP28 SR 100m network transceiver module 25000 Mbit/s
Brand: HPE
SKU: 845398-B21
Price: 109.25 USD
Availability: InStock
Rating: 5 (10 reviews)

Mfr. Part #: 845398-B21

Brand: Hpe

Condition: Refurbished

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25GB SFP28 SR 100m

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overview

specifications

faqs

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overview

845398-B21 Overview

HPE 845398-B21 Sfp28 Transceiver Module - 25 Gigabit Ethernet :

Summary Description

HPE 25GB SFP28 SR 100m. Maximum data transfer rate: 25000 Mbit/s, Interface type: SFP28, SFP transceiver standard: SR. Product colour: Aluminium. Width: 13.8 mm, Depth: 55.7 mm, Height: 11.9 mm

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specifications

Specifications

Overview

Condition	Refurbished
Brand	HPE
Stock	In Stock

Performance

Maximum data transfer rate	25000 Mbit/s
Interface type	SFP28
SFP transceiver standard	SR
Maximum transfer distance	100 m
Fiber ports quantity	2

Features

Product colour	Aluminium

Weight & dimensions

Width	13.8 mm
Depth	55.7 mm
Height	11.9 mm
Weight	19.2 g

Logistics data

Harmonized System (HS) code	85369010

faqs

Frequently Asked Questions

What is the maximum effective transmission range of the HPE 845398-B21 25GB SFP28 SR transceiver? +

The HPE 845398-B21 is designed for short-reach applications, specifically supporting data transmission up to 100 meters over OM4 multi-mode fiber optic cabling. This makes it an ideal solution for high-density intra-rack or row-to-row connections within modern data centers requiring high-speed 25GbE connectivity.

Is the HPE 845398-B21 compatible with standard SFP28 switch ports? +

Yes, this transceiver is built to industry-standard SFP28 specifications, ensuring seamless compatibility with HPE networking hardware equipped with SFP28-capable interfaces. It allows for a straightforward plug-and-play installation, providing robust 25Gbps performance without needing complex proprietary hardware configurations, provided the host switch firmware supports the module.

Can I use the HPE 845398-B21 for 10GbE connectivity, or is it strictly 25GbE? +

This module is specifically engineered for 25GbE throughput. While some SFP28 ports are backward compatible with 10GbE SFP+ modules, this specific optic is optimized for the 25G signaling rate. For environments transitioning to higher speeds, it provides the necessary bandwidth for heavy traffic loads across server-to-switch links.

What fiber type is required to achieve the full performance of the 845398-B21 module? +

To maintain signal integrity and meet the 100m distance specification, you must use high-quality multi-mode fiber, preferably OM3 or OM4. Using OM4 fiber is generally recommended to ensure the lowest possible attenuation and to maintain full 25G signal overhead in high-density cabling environments.

How does the SFP28 SR transceiver improve server connectivity compared to traditional 10GbE solutions? +

By upgrading to the 845398-B21, you gain a significant increase in per-lane bandwidth, allowing your network architecture to handle modern, data-intensive workloads more efficiently. It offers the low latency and high throughput required for cloud-native applications and high-performance computing clusters that are increasingly bottlenecked by legacy 10GbE infrastructure.

Does the HPE 845398-B21 support digital diagnostics monitoring? +

Yes, this transceiver supports Digital Diagnostic Monitoring (DDM) interfaces, which provide real-time access to operational parameters. This capability allows administrators to monitor critical metrics such as optical input/output power, temperature, and transceiver supply voltage, facilitating proactive maintenance and rapid troubleshooting to minimize potential network downtime.

How should I handle and install the 845398-B21 module to prevent damage? +

Always maintain a clean environment when handling optical components. Avoid touching the optical connector face, as oils or dust can degrade signal quality. When inserting the module into an SFP28 port, ensure it is seated firmly until the latch clicks, and always use protective dust covers on fiber cables when they are not actively connected.

What deployment environment is most suitable for the HPE 25GB SFP28 SR transceiver? +

This module is optimized for enterprise data centers and server farms that utilize top-of-rack or end-of-row switching architectures. Its low power consumption and high bandwidth capacity make it the standard choice for linking high-performance servers to leaf-spine switch fabrics where reliable, short-distance 25G links are essential for business-critical operations.

How can I request a bulk quote for the HPE 845398-B21 from BuyRouterSwitch.com? +

If you are planning a large-scale infrastructure refresh or require significant quantities for your project, please contact our sales team directly through our website. We specialize in providing competitive volume pricing for enterprise hardware and can assist in coordinating large orders to ensure your project stays on schedule and within budget.

Why should I choose BuyRouterSwitch.com for my HPE networking equipment needs? +

BuyRouterSwitch.com is a trusted source for genuine enterprise-grade networking components. We prioritize authenticity and secure procurement processes, ensuring that you receive original HPE equipment that meets rigorous quality standards. Our focus on supply chain transparency and professional customer service makes us the preferred partner for IT departments seeking reliable hardware solutions for their core network requirements.

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