QSFP28 100G SR4, LR4, ER4 & BIDI Transceivers | Taiwan TAA Manufacturer

QSFP28 100G Transceivers: SR4, LR4, ER4, BIDI – Versatile Solutions for Modern Data Networks

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QSFP28 100G Transceivers: SR4, LR4, ER4, BIDI – Versatile Solutions for Modern Data Networks

In the era of high-bandwidth cloud computing, AI workloads, and hyperscale data centers, reliable and scalable 100G optical transceivers remain a critical foundation. Among the QSFP28 100G product lineup, SR4, LR4, ER4, and BIDI transceivers offer a diverse range of solutions tailored to specific distances and deployment scenarios.

At QSFPDD800G, a Taiwan-based TAA-compliant manufacturer, we specialize in providing highly reliable optical transceivers that are engineered to meet global standards for government and commercial networks.

Key QSFP28 100G Variants & Applications

🟢 QSFP28 100G SR4 – Short Reach (≤ 100m)

  • Distance: Up to 100m over OM4 multimode fiber (MMF)

  • Connector: MPO-12

  • Application: Ideal for intra-rack and short-distance interconnects in data centers using parallel optics.

  • Advantage: Low power consumption, high-density connectivity.

🔵 QSFP28 100G LR4 – Long Reach (≤ 10km)

  • Distance: Up to 10km over single-mode fiber (SMF)

  • Connector: LC duplex

  • Application: Point-to-point interconnects between buildings or data hall aggregation layers.

  • Advantage: Utilizes 4 x 25Gbps CWDM wavelengths, enabling longer distance reach with robust performance.

🔴 QSFP28 100G ER4 – Extended Reach (≤ 40km)

  • Distance: Up to 40km over SMF

  • Connector: LC duplex

  • Application: Metro aggregation and long-haul enterprise backbones.

  • Advantage: Integrates APD/TIA receivers and EML lasers for superior long-distance signal integrity.

🟡 QSFP28 100G BIDI – Compact Single Fiber Design

  • Distance: 100m to 10km (depending on model)

  • Connector: LC simplex

  • Application: Fiber-limited environments, such as campus networks or older infrastructures.

  • Advantage: Transmit and receive over a single fiber using WDM, reducing cabling costs.

Advantages of Using QSFP28 100G Transceivers from a Taiwan TAA Manufacturer

  • ✅ TAA Compliance: Essential for US government and federal agency deployment.

  • ✅ High Interoperability: Compatible with Cisco, Arista, Juniper, and other major OEM switches.

  • ✅ Custom Labeling and OEM Branding: Ideal for system integrators and resellers.

  • ✅ Tested in 800G Environments: All modules validated within QSFP-DD 800G fabrics for future-readiness.

Scalability with QSFP-DD 800G Integration

For networks evolving toward 400G and 800G, QSFP28 100G transceivers offer backward compatibility and cost-effective scaling. At QSFPDD800G, our optical transceivers undergo validation testing in mixed environments with 800G OSFP and QSFP-DD switches, ensuring seamless deployment and flexibility for gradual upgrades.

Conclusion

Whether you're expanding a high-performance data center, upgrading a campus backbone, or optimizing legacy networks, QSFP28 100G transceivers—including SR4, LR4, ER4, and BIDI—remain essential building blocks. Partnering with a trusted, Taiwan-based TAA-compliant manufacturer like QSFPDD800G ensures long-term reliability, performance, and compliance across diverse network environments.

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