How to Choose OM5 Cable

OM5 Cable The Ultimate Buying Guide for High-Speed Data Centers in 2025

If you're managing or planning a high-speed data center, enterprise network, or cloud infrastructure, understanding OM5 fiber optic cables can help you make smarter purchasing decisions and future-proof your network.

In this comprehensive guide, we’ll cover everything you need to know about OM5 cables, including their performance benefits, use cases, how to choose the right one, and where to buy them. Whether you're upgrading an existing system or building from scratch, this guide will walk you through all the essentials.

What Is an OM5 Cable?

An OM5 cable is a type of laser-optimized multimode fiber (LOMMF) designed to support high-speed data transmission over short distances. It operates at wavelengths between 850–953 nm and is standardized under TIA-492AAAC .

Compared to earlier multimode fibers like OM1–OM4 , OM5 offers:

• Higher bandwidth (up to 2800 MHz·km at 850 nm )
• Support for Shortwave Wavelength Division Multiplexing (SWDM)
• Compatibility with 100G/400G Ethernet

This makes OM5 ideal for modern data centers that require fast, scalable, and cost-effective solutions.

Why Choose OM5 Over Other Multimode Fibers?

Here’s why OM5 stands out from other fiber types:

Key Advantages of OM5:

• Supports SWDM4 : Enables multiple data streams over a single fiber strand using different wavelengths.
• Reduces Fiber Count : Cuts down on required fiber strands by up to 75%, lowering costs and complexity.
• Future-Proof : Ready for next-gen speeds like 400G and 800G Ethernet .
• Cost-Effective : Offers better performance than OM4 without the price jump of single-mode fiber.

Top 5 Use Cases for OM5 Cable

1. High-Density Data Centers

OM5 supports higher bandwidth and SWDM, making it ideal for densely packed racks and switches in hyperscale environments.

2. Migration from 10G to 100G/400G

Instead of replacing entire cabling infrastructures, OM5 allows seamless migration to higher speeds using fewer fibers.

3. Campus and Building Backbones

OM5 provides reliable, high-capacity connections between buildings or across large campuses.

4. Cloud Service Providers

With growing demand for low-latency, high-throughput connections, OM5 helps CSPs scale efficiently.

5. Enterprises Needing Scalable Infrastructure

Businesses investing in AI, edge computing, or IoT benefit from OM5's ability to handle increasing data loads.

How to Buy the Right OM5 Cable – A Buyer’s Guide

Buying OM5 isn’t just about picking the cheapest option. Here are key factors to consider:

Core Size

Always 50/125 µm for OM5.

Jacket Type

• LSZH (Low Smoke Zero Halogen) – Best for fire safety.
• PVC – Cost-effective but emits toxic fumes when burned.
• Plenum-rated – Required for air-handling spaces.

Cable Type

• Tight Buffered – Easier to terminate and more flexible.
• Loose Tube – Better for outdoor installations and harsh environments.

Connector Types

• LC Duplex – Common for point-to-point links.
• MPO/MTP – Used for parallel optics and high-density setups.

Length & Customization

• Pre-terminated vs. spool-based options.
• Custom lengths reduce waste and simplify installation.

Standards Compliance

Ensure compliance with TIA-492AAAC and IEC 60793-2-10 standards.

Always ask for test reports and certification before purchase.

OM5 vs OM4: Which One Do You Really Need?

When to Choose OM4:

• Budget constraints
• Existing OM4 infrastructure
• No immediate plans for SWDM or 400G

When to Choose OM5:

• Planning for future scalability
• Supporting SWDM technology
• Reducing fiber count and complexity

If you’re building new or planning a major upgrade, OM5 may save money long-term despite a slightly higher initial cost.

Best OM5 Cable Brands and Where to Buy

Here are some top manufacturers and suppliers:

Online Retailers:

• Amazon Business
• B&H Photo Video Pro Audio
• CDW
• Ingram Micro

Be cautious of counterfeit cables. Always verify authenticity through official distributors.

Installation Tips and Best Practices

Installing OM5 cables correctly ensures optimal performance and longevity. Here’s what to keep in mind:

Tools Needed:

• Fiber cleaver
• Fusion splicer or mechanical splice kit
• OTDR and OLTS testers
• Cleaning kits (fiber scope, lint-free wipes)

Handling Guidelines:

• Minimum Bend Radius: 10x the cable diameter
• Avoid sharp bends or kinks
• Store cables away from heat and moisture

Testing & Certification:

• Perform insertion loss testing and end-face inspection
• Use Tier 1 and Tier 2 certification methods

Maintenance:

• Clean connectors regularly
• Label and document all cables
• Schedule periodic inspections

Is OM5 Right for Your Business?

If you're looking to build or upgrade a high-speed, future-ready network , OM5 is a smart investment. Its superior bandwidth, support for SWDM, and compatibility with next-generation Ethernet standards make it ideal for modern data centers, enterprises, and service providers.

While OM5 may come at a slightly higher cost than OM4, its long-term value—especially in reducing fiber counts and supporting faster upgrades—makes it a strategic choice.

Frequently Asked Questions (FAQ)

Q: Can OM5 support 100G Ethernet?
A: Yes, OM5 supports 100G Ethernet over distances up to 150 meters using parallel optics or SWDM.

Q: How far can OM5 run at 400G?
A: At 400G, OM5 can reach up to 100 meters with MPO-based parallel optics.

Q: Is OM5 backward compatible with OM4 or OM3?
A: Yes, OM5 is fully backward compatible and can be used in systems designed for OM4 or OM3.

Q: How much more expensive is OM5 than OM4?
A: On average, OM5 is 10–20% more expensive per meter , but the added functionality often justifies the cost.

Q: Can I install OM5 myself?
A: While possible, professional installation is recommended to ensure proper termination and certification.