845398-B21 HPE 25GB SFP28 SR 100m network transceiver module 25000 Mbit/s
Mfr. Part #:
845398-B21
Brand:
HPE
- Authenticity: Original Genuine OEM
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Was: $240.00$220.80 In Stock - Ships Worldwide Order by 2:00 PM ET for Overnight ShippingYou Save: $19.20 8% OFF
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Condition: NewWarranty: 90-day return/replacement
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25GB SFP28 SR 100m
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overview
specifications
faqs
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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
Overview
| Condition | New |
|---|---|
| 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 |
|---|
Frequently Asked Questions (FAQs)
What is the maximum data transmission distance for the HPE 845398-B21-VHBRSN module? +
The HPE 25GB SFP28 SR transceiver is specifically engineered for short-range communication. It supports high-speed 25GbE connectivity over multi-mode fiber (OM3 or OM4) for distances up to 100 meters. This makes it an ideal solution for connecting servers to top-of-rack switches within a single data center row or small server room environment.
Does the 845398-B21-VHBRSN transceiver support 10GbE speeds for backward compatibility? +
This module is designed for native 25GbE operation. While some SFP28 ports are multi-rate capable, you should always consult your specific HPE switch or server NIC hardware documentation to verify if it supports down-clocking to 10GbE. For optimal performance and link stability, it is best utilized in dedicated 25G infrastructure environments.
What type of optical fiber cabling is required for this 25G SFP28 module? +
This transceiver utilizes an LC duplex connector interface and requires multi-mode fiber (MMF). To achieve the rated 100-meter reach, it is recommended to use OM3 or OM4 grade laser-optimized multi-mode fiber. Ensure your patch cables are clean and properly inspected before deployment to maintain signal integrity at 25Gbps speeds.
Can I use the HPE 845398-B21-VHBRSN in third-party networking hardware? +
HPE transceivers are optimized and tested for seamless integration with HPE ProLiant servers and HPE networking switches. Using this module in non-HPE equipment may result in compatibility errors or port-level blocking, depending on the switch vendor's proprietary firmware requirements. For the most reliable network uptime, stick to HPE-certified hardware combinations.
What are the typical deployment scenarios for this 25GB SFP28 SR transceiver? +
These modules are primarily deployed in high-density data centers where low-latency 25GbE connections are required. They are commonly used to uplink high-performance servers to top-of-rack switches or to create high-speed interconnects between leaf and spine switches, providing a significant bandwidth upgrade over legacy 10GbE infrastructure without changing your existing multi-mode fiber plant.
Does the 845398-B21-VHBRSN require specific software configurations? +
Generally, this module is hot-pluggable and will be recognized automatically by compatible HPE hardware upon insertion. However, ensure your switch or network adapter firmware is up to date. You may occasionally need to verify port speed settings in the management interface to ensure the port is explicitly configured for 25Gbps operation rather than auto-negotiating incorrectly.
How does the power consumption of this SFP28 module compare to older 10G SFP+ optics? +
The 25GB SFP28 SR module is designed with high efficiency in mind, offering a superior performance-per-watt ratio compared to legacy 10GbE solutions. Despite the 2.5x increase in throughput, the power draw remains low, which is critical for maintaining thermal efficiency in high-density rack environments where power and cooling budgets are tightly managed.
Is this transceiver designed for internal data center use or long-haul networking? +
The 'SR' designation stands for short-range, and this product is strictly intended for indoor, short-reach applications. Because it operates over multi-mode fiber with a 100-meter limitation, it is not suitable for campus-wide links or long-haul telecommunications. For longer distances, you would need to look into SFP28 LR or ER modules designed for single-mode fiber.
How can I obtain a bulk price quote for the 845398-B21-VHBRSN from BuyRouterSwitch.com? +
If you are planning a large-scale data center upgrade, please reach out to our sales team directly through our website. We provide competitive bulk pricing and custom quotes tailored to your specific project requirements. Simply submit your requested part numbers and quantities to our sales department, and one of our dedicated account representatives will assist you promptly.
Why should I purchase my HPE network equipment from BuyRouterSwitch.com? +
BuyRouterSwitch.com is a trusted source for authentic enterprise-grade networking components. We prioritize providing our customers with genuine hardware, ensuring full compatibility and the performance you expect from HPE gear. When you order from us, you benefit from a streamlined procurement process, secure handling, and a commitment to helping you build a robust and reliable network infrastructure.
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