Need more information about this product? Our team is available to help: +44 203 006 1170
Customise labels tailored to your business with flexible designs, branding, and specific information.
The CT-SFP-BX-40U and CT-SFP-BX-40D are high-performance bi-directional (BIDI) SFP optical transceivers capable of transmitting data at 1.25Gbps over single-mode fiber (SMF) distances of up to 40 kilometers. These transceivers utilize a 1310nm FP laser and 1550nm PIN photodetector in the CT-SFP-BX-40U, and a 1550nm DFB laser with 1310nm PIN photodetector in the CT-SFP-BX-40D. Featuring an SFP package with LC connectors, these modules are designed for Ethernet, Telecom, and Fiber Channel applications. They are fully compliant with IEC-60825 laser safety standards and RoHS requirements.
With a single +3.3V power supply, LVPECL-compatible data interfaces, low EMI, and superior ESD protection, these transceivers ensure reliable and robust operation in both commercial and industrial environments. They support an operating temperature range of -40Ā°C to +85Ā°C for industrial-grade and 0Ā°C to +70Ā°C for commercial-grade devices. Optical performance includes precise wavelength control at 1310nm/1550nm, high extinction ratios, and excellent sensitivity, making them ideal for long-distance and high-speed optical communication systems.
These BiDi SFP modules are optimized for Ethernet, Fibre Channel, and telecom networks requiring cost-effective long-reach single-fiber solutions. They operate from a single +3.3 V supply, provide LVPECL-compatible I/O, and incorporate low EMI with strong ESD protection. The modules are IEC-60825 laser-safety certified and 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 | 1540 | 1550 | 1560 | nm |
| RMS spectral width | Tx 1310 | ā | ā | 4 | nm |
| RMS spectral width | Tx 1550 | ā | ā | 1 | nm |
| Average output power | Tx 1310 | ā5 | ā | 0 | dBm |
| Average output power | Tx 1550 | ā5 | ā | 0 | dBm |
| Extinction ratio | ā | 10 | 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-40U: 1310 nm FP Tx / 1550 nm PIN Rx
CT-SFP-BX-40D: 1550 nm DFB 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 support, and wavelength codes for 1310/1550 nm operation.
Key pins: TX Disable (input with internal pull-up), TX Fault (open collector), LOS (open collector), MOD-DEF[0:2] for 2-wire serial ID. TDĀ± and RDĀ± are AC-coupled differential 100 Ī© 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.
Our team of multilingual 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.
If you’d prefer to speak to someone right away, you can call us:
Enter your details below to request samples for our optical transceivers.