Nokia 3HE04939AA Compatible SFP 1000BASE-CWDM 1270nm-1610nm 40km DOM Duplex LC/UPC SMF Optical Transceiver Module for Transmission

The 1.25Gbps CWDM Single-mode SFP Transceiver is a high-performance optical module designed for reliable data communication over single-mode fiber (SMF) up to 40 kilometers. It features a DFB laser transmitter and PIN photo-detector, encased in a hot-pluggable SFP package with a duplex LC/UPC optical interface. This transceiver supports data rates of up to 1.25Gbps, making it ideal for applications such as switch-to-switch interfaces, Gigabit Ethernet, backplane applications, router/server interfaces, and other optical links. Compliant with SFF-8472 standards, it offers advanced features like digital diagnostic monitoring.

Engineered for efficiency, the transceiver operates on a single +3.3V power supply with low power dissipation. Its metal enclosure minimizes electromagnetic interference (EMI), ensuring stable performance in demanding network environments. The module supports a wide operating temperature range of 0°C to +70°C, making it suitable for various commercial networking scenarios. In addition, it complies with RoHS regulations, ensuring environmentally friendly operation.

The optical performance is a key highlight, with a transmitter average output power range of -5dBm to 0dBm and an extinction ratio of 9dB. It utilizes CWDM wavelengths ranging from 1270nm to 1610nm, allowing for flexible channel allocation and efficient bandwidth usage. The receiver provides a sensitivity of -24dBm and can handle input wavelengths from 1270nm to 1610nm, making it compatible with a range of CWDM systems. Key features like Loss of Signal (LOS) and Transmitter Disable (Tx Disable) provide enhanced operational control and diagnostics.

Electrically, the transceiver offers a differential line input impedance of 100Ω and complies with IEEE802.3z for transmitter output eye mask requirements. It is compatible with standard 2-wire serial communication protocols for accessing identification and diagnostic information. Real-time monitoring of parameters such as temperature, laser bias current, transmitted optical power, and received optical power is supported, with alarm flags for operating conditions outside normal ranges.

In summary, the 1.25Gbps CWDM Single-mode SFP Transceiver is a versatile and reliable solution for medium-range networking applications. Its advanced optical and electrical features, coupled with compliance to industry standards, make it a valuable component for modern telecommunications and data infrastructure.

This CWDM SFP module offers flexible wavelength selection from 1270 to 1610 nm, providing efficient wavelength multiplexing for metro and access networks. It supports +3.3 V single-rail operation, includes low power consumption and EMI shielding, and is hot-pluggable for easy deployment. Enhanced DDM (per SFF-8472) allows real-time monitoring of temperature, bias current, optical power, and supply voltage.

Key Features

• Data rate: 1.25 Gbps
• Reach: up to 40 km over 9/125 µm SMF
• Laser: DFB transmitter
• Receiver: PIN-TIA
• Optical interface: Duplex LC/UPC
• Power supply: +3.3 V, max 300 mA
• Hot-pluggable SFP footprint
• Digital Diagnostics Monitoring (DDM)
• Operating case temperature: 0 °C to +70 °C
• RoHS compliant, lead-free

CWDM Wavelength Options

Optical Characteristics (DFB Tx / PIN Rx)

• Transmitter:
  • Output power: −5 to 0 dBm
  • Extinction ratio: ≥ 9 dB
  • SMSR: ≥ 30 dB
  • Spectrum bandwidth: ≤ 1 nm
  • Tx off power: ≤ −45 dBm
• Receiver:
  • Sensitivity: ≤ −24 dBm
  • Overload: −1 dBm
  • LOS assert: ≤ −25 dBm
  • LOS de-assert: ≥ −38 dBm
  • Wavelength range: 1270–1610 nm

Electrical Characteristics

• Supply voltage: 3.13–3.47 V
• Max current: 300 mA (Tx + Rx combined)
• Differential input impedance: 100 Ω
• TTL logic for Tx Disable, Tx Fault, and LOS outputs.

• CWDM Gigabit Ethernet transport up to 40 km.
• Switch-to-switch and router/server interconnections.
• Metro and access networks with wavelength multiplexing.
• Fibre Channel SAN extension over SMF.

Carritech Optics can offer a fully compatible, high-quality alternative to Nokia 3HE04939AA.

Carritech part number: CT-SFP-CWXX-40

• Wide CWDM wavelength options (1270–1610 nm).
• Supports 40 km transmission over SMF.
• DFB/PIN optics with digital diagnostics.
• Compact hot-pluggable SFP form factor with duplex LC.
• Low power, low EMI, and RoHS compliant.
• Fully compliant with SFF-8472 and IEC/EN 60825.

At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers, including the 3HE04939AA, 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.

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.