ST-LC Multimode OM3 & OM4 Ultra Fiber Cable
The iFiber Optix ST to LC Multimode OM3 and OM4 Ultra Fiber Cables are engineered to deliver fast, reliable data transmission for high-bandwidth applications in data centers, LANs, and enterprise environments.
Featuring Corning ClearCurve 50/125µm multimode fiber with ST and LC connectors, both variants support 10G, 40G, and 100G Ethernet — with OM4 extending reach and bandwidth for more demanding deployments.
ST to LC Multimode OM3 Ultra Fiber Cable
The ST to LC Multimode OM3 Ultra Fiber Cable pairs a bayonet-style ST connector with a compact LC connector using 50/125µm OM3 multimode fiber. It supports 10 Gbps up to 300 meters and 40/100 Gbps up to 100 meters, making it a reliable choice for integrating legacy ST infrastructure with modern high-density LC equipment.
A practical solution for data centers, enterprise LANs, and industrial networks transitioning from older ST-based systems to current LC port environments.
ST to LC Multimode OM4 Ultra Fiber Cable
The ST to LC Multimode OM4 Ultra Fiber Cable pairs a bayonet-style ST connector with a compact LC connector using 50/125µm OM4 multimode fiber. It supports 10 Gbps up to 550 meters and 40/100 Gbps up to 150 meters, delivering extended reach and higher bandwidth for demanding ST-to-LC migration scenarios.
The ideal upgrade path for networks evolving from ST-terminated legacy hardware to modern LC-based switching and patching equipment, without replacing existing infrastructure.
OM3 vs OM4 — Side-by-Side Comparison
Both cables share the same connector type, fiber size, and core specifications. The key differences lie in maximum transmission distance and bandwidth capacity.
| Specification | OM3 | OM4 |
|---|---|---|
| Fiber Core / Cladding | 50 / 125µm | 50 / 125µm |
| 10G Ethernet Distance | Up to 300m | Up to 550m |
| 40/100G Ethernet Distance | Up to 100m | Up to 150m |
| Insertion Loss | < 0.3 dB | < 0.3 dB |
| Typical Insertion Loss | 0.2 dB | 0.2 dB |
| Mating Durability | < 0.2 dB (500 cycles) | < 0.2 dB (500 cycles) |
| Temperature Range | -40°C to 85°C | -40°C to 85°C |
| Available Cable Sizes | 2.0, 1.8, 1.6, 1.2 mm | 2.0, 1.8, 1.6, 1.2 mm |
| Part Number | I2350-H-XX-2J | I2550-H-XX-XJ |
Specification Drawing & Documentation
All iFiber Optix ST-LC OM3 and OM4 multimode assemblies are manufactured and tested to meet or exceed published optical and mechanical performance specifications.
Key Features
- High-Speed Data Transmission Both OM3 and OM4 support 10G, 40G, and 100G Ethernet. OM4 extends transmission distance significantly over OM3 for higher-demand environments.
- Optimized for Short-to-Medium Distances Designed for data centers, LANs, and HPC environments where high-speed performance over short to medium runs is the priority.
- Low Insertion Loss LC connectors deliver insertion loss below 0.3 dB, ensuring minimal signal degradation and consistent network performance.
- Legacy ST to Modern LC Bridging Connects ST-terminated legacy hardware directly to modern LC-based switches and patch panels, eliminating the need for adapters or full infrastructure replacement.
- Durable Construction Built to SPC GR-326 geometric requirements with high-quality materials for long-term reliability in mission-critical environments.
- Cost-Effective Performance OM3 and OM4 multimode fibers offer a cost-effective alternative to singlemode for short-to-medium distance applications without sacrificing speed.
Ideal Applications
ST-LC OM3 and OM4 multimode cables are the go-to solution for environments running a mix of legacy ST-equipped hardware and modern LC-based networking equipment.
Network Upgrades
Bridges existing ST-terminated equipment to new LC-based switches and patch panels without full infrastructure replacement.
Data Centers
Supports high-speed server, storage, and switch interconnects in environments with mixed legacy and modern fiber ports.
Enterprise Networks
Ideal for large corporate LANs and campus environments phasing in new LC equipment alongside existing ST infrastructure.
Industrial Networks
ST connectors are a staple in industrial environments — this cable extends their reach to LC-based modern control and networking hardware.
Telecommunication Systems
Supports medium-distance 40G and 100G links in telecom hubs where legacy ST panels connect to updated LC equipment.
Custom Fiber Builds
Available in custom lengths and ruggedized configurations for specialized ST-to-LC mixed deployments.
OM3 or OM4 — How to Choose
Both cables deliver excellent performance. Use these factors to determine which fiber type best fits your network requirements.
Consider Transmission Distance
Choose OM4 if your runs exceed 100m at 40/100G or 300m at 10G — otherwise OM3 covers most standard deployments.
Plan for Future Growth
OM4 offers extended reach and higher bandwidth headroom, making it the better choice for networks expected to scale.
Evaluate Network Density
Verify your equipment has ST ports on one end and LC ports on the other. The ST bayonet connector locks with a quarter-turn; the LC snaps securely into high-density panels.
Account for Environment
For outdoor or harsh conditions, ruggedized jacket options are available for both OM3 and OM4 variants.
Why Choose iFiber Optix?
- Quality Assurance Each cable is built and tested for consistent optical performance before shipment.
- Custom Configurations Lengths, jacket types, and connector options can be tailored to your exact project requirements.
- Reliable Support Our team can help you choose between OM3 and OM4 and spec the right solution for your environment.
- Built for Critical Deployments Designed to deliver dependable high-speed connectivity in demanding data center and enterprise environments.
Request Information
Ready to spec ST-LC OM3 or OM4 multimode cables for your next deployment? Our team can help with custom lengths, jacket selection, and bulk pricing.