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The 1.25Gbps Bi-Directional SFP Optical Transceiver is a reliable module designed for short-distance communication over single-mode fiber (SMF) up to 3 kilometers. This transceiver features two configurations: a 1310nm FP laser transmitter with a 1550nm PIN photodetector and a 1550nm FP laser transmitter with a 1310nm PIN photodetector. It operates with a single +3.3V power supply and is optimized for Ethernet, telecom, and Fiber Channel applications. Compliant with IEC-60825 laser safety standards and RoHS regulations, the module ensures safe and environmentally responsible use.
The transceiver provides a typical transmitter output power of -12dBm to -6dBm and supports a receiver sensitivity of -24dBm, ensuring robust signal transmission and reception. Advanced features such as Loss of Signal (LOS) detection and LVPECL-compatible data interfaces enhance its diagnostic and operational capabilities. With a compact SFP package and LC connector, the module operates reliably across commercial (0Ā°C to +70Ā°C) and industrial (-40Ā°C to +85Ā°C) temperature ranges, making it a dependable choice for high-speed, short-distance optical communication systems.
These compact BiDi SFP modules provide reliable short-distance single-fiber connectivity for Ethernet, Fibre Channel, and telecom networks. They operate from a single +3.3 V supply, feature LVPECL-compatible data interfaces, and include low EMI design with strong ESD protection. The devices are IEC-60825 laser-safety certified and fully RoHS compliant.
| Parameter | Symbol | Min | Max | Units |
|---|---|---|---|---|
| Storage temperature | Tst | ā40 | +85 | Ā°C |
| Supply voltage | Vcc | 0 | +3.6 | V |
| Operating relative humidity | RH | 5 | 95 | % |
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply voltage | Vcc | 3.15 | 3.3 | 3.45 | V |
| Case temperature (Commercial) | Tc | 0 | ā | +70 | Ā°C |
| Case temperature (Industrial) | ā | ā40 | ā | +85 | Ā°C |
| Power dissipation | ā | ā | ā | 1 | W |
| Data rate | ā | ā | 1.25 | ā | Gbps |
| Parameter | Variant | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Center wavelength | Tx 1310 | 1260 | 1310 | 1360 | nm |
| Center wavelength | Tx 1550 | 1500 | 1550 | 1600 | nm |
| RMS spectral width | Tx 1310 | ā | ā | 4 | nm |
| RMS spectral width | Tx 1550 | ā | ā | 4 | nm |
| Average output power | Tx 1310 | ā12 | ā | ā6 | dBm |
| Average output power | Tx 1550 | ā12 | ā | ā6 | dBm |
| Extinction ratio | ā | 9 | ā | 15 | dB |
| Rise/fall time (20ā80%) | ā | ā | ā | 0.26 | ns |
| Total jitter | ā | ā | ā | 0.43 | UI |
| Optical eye: IEEE 802.3z and ANSI Fibre Channel compliant. |
| Parameter | Variant | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Center wavelength | Rx 1550 | 1500 | 1550 | 1600 | nm |
| Center wavelength | Rx 1310 | 1260 | 1310 | 1360 | nm |
| Sensitivity (Rsen) | ā | ā | ā | ā24 | dBm |
| Overload (Rov) | ā | ā3 | ā | ā | dBm |
| Return loss | ā | 12 | ā | ā | dB |
| LOS assert (LOSA) | ā | ā36 | ā | ā | dBm |
| LOS de-assert (LOSD) | ā | ā | ā | ā24 | dBm |
| LOS hysteresis | ā | 0.5 | ā | 5 | dB |
BiDi pair mapping
CT-SFP-BX-3U: 1310 nm FP Tx / 1550 nm PIN Rx
CT-SFP-BX-3D: 1550 nm FP Tx / 1310 nm PIN Rx.
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input differential impedance | Zin | 90 | 100 | 110 | Ī© |
| Data input swing (diff.) | Vin | 500 | ā | 2400 | mV |
| TX Disable ā High (disable) | ā | 2.0 | ā | Vcc | V |
| TX Disable ā Low (enable) | ā | 0 | ā | 0.8 | V |
| TX Fault ā Assert | ā | 2.0 | ā | Vcc | V |
| TX Fault ā De-assert | ā | 0 | ā | 0.8 | V |
| Parameter | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output differential impedance | Zout | ā | 100 | ā | Ī© |
| Data output swing (diff.) | Vout | 370 | ā | 2000 | mV |
| Rx_LOS ā Assert | ā | 2.0 | ā | Vcc | V |
| Rx_LOS ā De-assert | ā | 0 | ā | 0.8 | V |
EEPROM (A0h): includes SFP identifier, LC connector, 1.25 Gbps nominal BR, LOS/TX_DISABLE/TX_FAULT functions, and wavelength codes for 1310/1550 nm operation.
Key pins: TX Disable (input with pull-up), TX Fault (open collector), LOS (open collector), MOD-DEF[0:2] for 2-wire serial ID. TDĀ± and RDĀ± are AC-coupled 100 Ī© differential pairs.
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. Thatās 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 weāll 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 weāre with you every step of the way.
At Carritech Optics, every product we supply undergoes a meticulous testing process designed to guarantee exceptional quality, reliability, and consistency. Our manufacturer operates within a professional laboratory environment, where advanced testing equipment and industry-standard procedures are used to carefully evaluate each item.
Carritechās 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.
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