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Buying Guide – How to Select a Reliable 100G ZR4 Optical Module

2025-09-15

Check Brand and Certification

When choosing a 100G ZR4 optical module, ensure it comes from a trusted manufacturer with certifications such as CE, FCC, and RoHS. Reputable suppliers also provide detailed datasheets, customer support, and warranty services.

Key Technical Parameters to Verify

Transmission Distance: Confirm support for 80km.
Connector Type: Ensure LC duplex compatibility.
Wavelength: 1310nm is the standard for ZR4.
Compliance: Must meet 100GBASE-ZR4 and QSFP28 interface standards.

Environmental Reliability

Look for modules that can operate between 0°C and 70°C, ensuring stable performance even in varied data center conditions. DOM monitoring is also essential for real-time diagnostics.

Cost and Total Ownership Value

While ZR4 modules may cost more upfront than LR4 or ER4, they reduce the need for intermediate equipment, lowering total ownership costs. The investment pays off in long-term stability and reduced maintenance.

Warranty and After-Sales Service

A three-year warranty and responsive technical support are important. Reliable vendors also provide quick delivery and flexible minimum order quantities, making them practical for both testing and deployment.

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