QSFP28 to SFP28 Breakout Cable Overview

QSFP28 to SFP28 Breakout Cable Overview

# QSFP28 to SFP28 Breakout Cable Overview

## Introduction

QSFP28 to SFP28 breakout cables are essential components in modern high-speed networking environments. These cables enable the connection between QSFP28 ports (commonly found on switches and routers) and SFP28 ports (often used on servers or other networking equipment). This article explores the key features, applications, and benefits of these breakout cables.

## What is a QSFP28 to SFP28 Breakout Cable?

A QSFP28 to SFP28 breakout cable is a specialized passive copper cable that splits one 100G QSFP28 port into four independent 25G SFP28 channels. This configuration allows for flexible connectivity options in data center and enterprise network environments.

### Key Specifications

– Connector types: QSFP28 on one end, 4x SFP28 on the other
– Data rate: 100Gbps (4x25Gbps)
– Cable length: Typically 1m to 5m
– Compliance: IEEE 802.3by, SFF-8665, SFF-8636

## Applications

QSFP28 to SFP28 breakout cables find use in various networking scenarios:

– Data center interconnects
– High-performance computing
– Storage area networks
– Network upgrades from 10G to 25G/100G infrastructure

## Benefits

These breakout cables offer several advantages:

– Cost-effective solution compared to active optical cables
– Low power consumption
– High reliability with error-free data transmission
– Flexible connectivity options
– Backward compatibility with SFP+ ports (at reduced speeds)

## Considerations When Choosing a Breakout Cable

When selecting a QSFP28 to SFP28 breakout cable, consider:

– Required cable length
– Compatibility with your networking equipment
– Operating temperature range
– Bend radius requirements
– Vendor support and warranty

## Conclusion

QSFP28 to SFP28 breakout cables provide an efficient and economical way to connect high-speed networking equipment. Their ability to split a single 100G port into four 25G channels makes them particularly valuable in data center environments where flexibility and scalability are crucial. As network speeds continue to increase, these cables will remain important components in modern network infrastructure.