1.25G BIDI SFP 1310/1550NM 3KM SC/LC
Carritech Optics CT-SFP-BX-3U / CT-SFP-BX-3D are 1.25 Gbps bidirectional SFP optical transceivers designed for single-mode fiber links up to 3 km, using LC connectors with complementary 1310/1550 nm FP transmitters and PIN receivers.
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The hardware listed below is a selection of key popular equipment, not a complete compatibility list. This transceiver may also be compatible with many other hardware models. Contact us and we can check the exact hardware you need.
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O 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 (0°C to +70°C) and industrial (-40°C to +85°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.
| Parâmetro | Symbol | Min | Max | Units |
|---|---|---|---|---|
| Temperatura de armazenamento | Tst | −40 | +85 | °C |
| Tensão de alimentação | Vcc | 0 | +3.6 | V |
| Operating relative humidity | RH | 5 | 95 | % |
| Parâmetro | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Tensão de alimentação | Vcc | 3.15 | 3.3 | 3.45 | V |
| Case temperature (Commercial) | Tc | 0 | — | +70 | °C |
| Case temperature (Industrial) | — | −40 | — | +85 | °C |
| Power dissipation | — | — | — | 1 | W |
| Taxa de dados | — | — | 1.25 | — | Gbps |
| Parâmetro | 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 | — | — | 4 | nm |
| RMS spectral width | Tx 1550 | — | — | 4 | nm |
| Average output power | Tx 1310 | −12 | — | −6 | dBm |
| Average output power | Tx 1550 | −12 | — | −6 | dBm |
| Rácio de extinção | — | 9 | — | 15 | dB |
| Rise/fall time (20–80%) | — | — | — | 0.26 | ns |
| Total jitter | — | — | — | 0.43 | UI |
| Optical eye: IEEE 802.3z and ANSI Fibre Channel compliant. |
| Parâmetro | Variant | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Center wavelength | Rx 1550 | 1500 | 1550 | 1600 | nm |
| Center wavelength | Rx 1310 | 1260 | 1310 | 1360 | nm |
| Sensitivity (Rsen) | — | — | — | −24 | dBm |
| Overload (Rov) | — | −3 | — | — | dBm |
| Return loss | — | 12 | — | — | dB |
| LOS assert (LOSA) | — | −36 | — | — | dBm |
| LOS de-assert (LOSD) | — | — | — | −24 | dBm |
| LOS hysteresis | — | 0.5 | — | 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.
| Parâmetro | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input differential impedance | Zin | 90 | 100 | 110 | Ω |
| Data input swing (diff.) | Vin | 500 | — | 2400 | mV |
| TX Disable — High (disable) | — | 2.0 | — | Vcc | V |
| TX Disable — Low (enable) | — | 0 | — | 0.8 | V |
| TX Fault — Assert | — | 2.0 | — | Vcc | V |
| TX Fault — De-assert | — | 0 | — | 0.8 | V |
| Parâmetro | Symbol | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output differential impedance | Zout | — | 100 | — | Ω |
| Data output swing (diff.) | Vout | 370 | — | 2000 | mV |
| Rx_LOS — Assert | — | 2.0 | — | Vcc | V |
| Rx_LOS — De-assert | — | 0 | — | 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. TD± and RD± are AC-coupled 100 Ω differential pairs.
At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers, including the CT-SFP-BX-3U, 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.
Reconhecemos que cada projeto é único e a nossa abordagem flexível permite-nos adaptarmo-nos às suas necessidades específicas. Quer necessite de uma entrega imediata ou tenha requisitos mais complexos, estamos aqui para o apoiar em cada passo do processo. O nosso compromisso com a satisfação do cliente significa que nos esforçamos ao máximo para garantir que recebe os seus transceptores SFP em tempo útil, sem comprometer a qualidade. Confie na Carritech para fornecer as soluções de que precisa, quando precisa delas.
Na Carritech Optics, defendemos a qualidade e a fiabilidade dos nossos transceptores ópticos. É por isso que temos o orgulho de oferecer uma garantia vitalícia para todos os produtos, como prova do nosso compromisso com a excelência e a satisfação do cliente.
A nossa garantia vitalícia oferece uma cobertura abrangente para todo o ciclo de vida dos seus transceptores ópticos, assegurando-lhe total tranquilidade ao escolher a Carritech Optics. A garantia cobre:
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