The 155Mbps Bi-Directional SFP Optical Transceiver is designed for ultra-long-distance communication over single-mode fiber (SMF) up to 120 kilometers. Featuring two configurations—1490nm DFB laser with a 1550nm PIN photodetector, or 1550nm DFB laser with a 1490nm PIN photodetector—the transceiver provides reliable performance for Ethernet, telecom, and Fiber Channel applications. It operates with a single +3.3V power supply and complies with industry standards, including IEC-60825 for laser safety and RoHS for environmental compliance. Its compact SFP package with LC connectors ensures seamless integration into networking systems.
The module offers a transmitter output power of 0dBm to +5dBm with an extinction ratio between 12dB and 18dB, while the receiver sensitivity reaches -36dBm. Additional features include Loss of Signal (LOS) detection and LVPECL-compatible data input/output interfaces. It operates efficiently across commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges, with low power dissipation of 1W. This transceiver is a dependable solution for high-speed, long-distance optical communication.
The CT-MSFP-BX-120U and CT-MSFP-BX-120D are hot-pluggable SFP modules that provide reliable 155 Mb/s bidirectional links over single-mode fiber up to 120 km. They integrate 1490 nm (U) or 1550 nm (D) DFB transmitters with complementary PIN photodiode receivers, enabling flexible deployment in long-distance networks. Operating on a single +3.3 V supply with <1 W power consumption, they feature LVPECL-compatible electrical interfaces, excellent EMI/ESD resistance, and digital diagnostics via EEPROM. Compliant with IEC-60825 laser safety and RoHS standards, they are available in commercial and industrial temperature grades.
| Parameter | Value |
|---|---|
| Form factor / Connector | SFP, LC duplex |
| Data rate | 155 Mb/s |
| Tx wavelength | 1490 nm (U) / 1550 nm (D), DFB laser |
| Rx wavelength | 1490–1600 nm (for 1550 nm Tx) / 1440–1540 nm (for 1490 nm Tx) |
| Fiber type / Reach | SMF, up to 120 km |
| Tx output power | 0 to +5 dBm |
| Extinction ratio | 12–18 dB |
| Rx sensitivity | ≤ –36 dBm |
| Rx overload | 0 dBm |
| LOS threshold | Assert –45 dBm, Deassert –36 dBm |
| Power consumption | ≤ 1 W |
| Supply voltage | 3.15–3.45 V (nom. 3.3 V) |
| Electrical interface | LVPECL-compatible differential I/O |
| EEPROM | Serial ID (A0h), DDM fields |
| Category | Range |
|---|---|
| Operating case temperature (Commercial) | 0 to +70 °C |
| Operating case temperature (Industrial) | –40 to +85 °C |
| Storage temperature | –40 to +85 °C |
| Relative humidity | 5% – 95% (non-condensing) |
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.
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.
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:
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.
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.
Carritech’s Opticode is an advanced transceiver programming solution that gives you complete flexibility across your optical network. Designed to ensure seamless compatibility with a wide range of OEM systems, Opticode allows you to quickly reconfigure transceivers to meet your specific requirements. The result is greater control, reduced costs, and a more adaptable, future-proof infrastructure.
Intuitive interface allows you to reprogram transceivers quickly, without complex processes or specialist training.
Reprogram transceivers to work reliably across a wide range of OEM systems.
Gain the flexibility to adapt, optimise, and scale your optical infrastructure with confidence.
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