400G ER4 QSFP-DD PAM4 LWDM4 40km LC SMF Optical Transceiver Module

PN: CT-400G-QDD-ER4

Product Description

400G ER4 QSFP-DD1310NM 40KM

The 400G ER4 QSFP ER4 Optical Transceiver is a high-performance module designed for long-distance data transmission, supporting up to 40km over single-mode fiber (SMF) through a Duplex LC connector. It adheres to QSFP-DD MSA, IEEE 802.3bs protocol, and the 400GAUI-8 standard.

Utilizing a 4-lane LWDM (LAN-WDM) design with built-in multiplexing and demultiplexing, this module efficiently transmits 400 Gigabit Ethernet signals over duplex fiber optics. Ideal for high-speed networking applications, it provides a reliable solution for extended-range connectivity without requiring Forward Error Correction (FEC).

Add to quote

400G ER4 QSFP-DD Optical Transceiver for Ultra-Long-Reach Networking

The 400G ER4 QSFP-DD transceiver is built to deliver 400Gbps high-speed connectivity over single-mode fiber (SMF), supporting extended transmission distances of up to 40km. Utilising 4-channel PAM4 modulation and LAN-WDM technology, it ensures reliable long-range data transfer while maintaining power efficiency. With an LC duplex connector, this transceiver seamlessly integrates into high-performance data centers, enterprise networks, and carrier infrastructure.

Why Choose Our 400G ER4 QSFP-DD Optical Transceivers?

Designed for carrier-grade networking, hyperscale data centers, and high-speed interconnects, the 400G ER4 QSFP-DD transceiver offers exceptional performance, reliability, and scalability for next-generation networking demands.

Add to quote
400g-er4-qsfp-dd

Lifetime Warranty

We stand by the exceptional quality of our optical transceivers, which is why we offer a lifetime warranty—giving you complete confidence in performance, reliability, and long-term value.

Specifications

The 400G ER4 – 400Gbps QSFP-DD ER4 Optical Transceiver is a high-performance module designed for ultra-long-distance communication over single-mode fiber (SMF) up to 40 kilometers. It operates at a lane bit rate of 106.25Gbps using PAM4 modulation and features an 8-lane electrical interface (400GAUI-8) for efficient data transmission. The transceiver integrates an EML laser and APD receiver to ensure robust signal integrity and high sensitivity. Compliant with QSFP-DD MSA, IEEE 802.3 standards, and EU Directive 2015/863/EU, this transceiver is ideal for applications like 400GBASE-ER4 Ethernet, 5G backhaul, data center interconnects, and cloud networking.

Operating on a single +3.3V power supply with a maximum power consumption of 12W, the module ensures reliable performance within a temperature range of 0°C to 70°C. It provides advanced digital diagnostic monitoring (DDM) through an I2C interface, enabling real-time monitoring of critical parameters such as temperature, voltage, and optical power. With a duplex LC connector and hot-pluggable QSFP-DD form factor, the transceiver ensures seamless integration into high-speed networking environments. Its adherence to stringent standards and advanced features make it an essential component for next-generation optical communication systems.

All of our optical transceivers come with a lifetime warranty.

Applications

  • 400GBASE-ER4 Ethernet (PAM4)
  • 5G Back-haul / Data center / Cloud application

Features

  • Supports 400GBASE-ER4
  • Lane bit rate 106.25Gb/s with PAM4
  • Up to 40km transmission on SMF
  • 400GAUI-8 Electrical interface with 8 Lanes
  • 125 Gb/s PAM4 high-speed signal
  • I2C interface with integrated Digital Diagnostic monitoring
  • QSFP-DD MSA package with duplex LC connector
  • Single +3.3V power supply
  • Maximum power consumption 12W
  • Operating case temperature: 0 to +70 °C
  • Complies with EU Directive 2015/863/EU

Resources

CT-400G-QDD-ER4 Data Sheet

Delivery & Lead Times

At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers is designed to cater to various requirements, ensuring that you receive the best solutions for your projects. We understand the importance of timely delivery, and our efficient processes are geared towards providing you with the products you need as quickly as possible. Our dedicated team works tirelessly to ensure that your orders are processed and dispatched promptly, so you can rely on us for swift and reliable service.

We recognise that every project is unique, and our flexible approach allows us to adapt to your specific needs. Whether you require immediate delivery or have more complex requirements, we are here to support you every step of the way. Our commitment to customer satisfaction means that we go above and beyond to ensure that you receive your SFP transceivers in a timely manner, without compromising on quality. Trust Carritech to deliver the solutions you need, when you need them.

Lifetime Warranty

At Carritech Optics, we stand by the quality and reliability of our optical transceivers. That’s why we proudly offer a lifetime warranty on all products as a testament to our commitment to excellence and customer satisfaction.

What Does Our Lifetime Warranty Cover?

Our lifetime warranty provides comprehensive coverage for the entire lifecycle of your optical transceivers, ensuring you experience complete peace of mind when choosing Carritech Optics. The warranty covers:

  • Defects in Materials and Workmanship: If your product experiences any issues related to manufacturing or materials, we’ll repair or replace it free of charge.
  • Performance Assurance: Our optical transceivers are rigorously tested to meet industry standards, and we guarantee they’ll perform as expected in your network environment.

Easy Claims Process

Should you ever need to make a warranty claim, our team is here to assist you. Simply contact our support team with your product details, and we’ll guide you through a quick and hassle-free process to resolve the issue.

Your Network’s Performance, Guaranteed

Carritech Optics is dedicated to providing high-quality optical solutions that you can trust for the long haul. With our lifetime warranty, you can confidently invest in our products, knowing that we’re with you every step of the way.

Get in touch

Send us your requirements.

Our team of multiingual professionals are here to help you to understand our products and fulfil your requirements. Simply enter your details below and our team will be in touch.

Talk to us immediately.

If you’d prefer to speak to someone right away, you can call us: