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The 1.25Gbps 1310/1490nm Compact SFP (CSFP) Transceiver is a high-performance optical module designed for bi-directional data communication over single-mode fiber (SMF) up to 20 kilometers. Encased in a compact SFP form factor with an LC/UPC optical interface, it supports data rates of up to 1250Mbps and complies with the 1000Base-BX20 IEEE802.3ah standard. The module integrates a 1310nm FP laser for upstream transmission, a 1490nm DFB laser for downstream transmission, and a PIN photodetector for reliable performance. Its compliance with CSFP MSA and SFF-8472 standards ensures broad compatibility across networking equipment.
Operating on a single +3.3V power supply, the transceiver is energy-efficient with a power consumption of less than 1.5W. It is designed for commercial applications with a case operating temperature range of 0°C to 70°C. The module’s metal enclosure minimizes electromagnetic interference (EMI), ensuring stable and reliable operation in high-performance networks. RoHS compliance further underscores its environmentally responsible design.
The transceiver’s optical performance is optimized for reliability. The transmitter provides an average output power between -9dBm and -3dBm, with an extinction ratio of 8.2dB. The receiver sensitivity is rated at -19dBm, and the module includes advanced diagnostic features such as Loss of Signal (LOS) detection. The LOS output indicates link status or insufficient optical power, enhancing monitoring capabilities for operational stability.
Electrically, the module features a differential impedance of 100Ω and supports input and output swing differentials to facilitate integration with host systems. Digital diagnostics are accessible via a 2-wire serial interface, providing real-time insights into parameters like temperature, voltage, bias current, and optical power. Alarm and warning thresholds alert users to deviations from optimal operating conditions, ensuring reliability and performance.
In summary, the 1.25Gbps 1310/1490nm Compact SFP Transceiver is a robust and efficient solution for short to medium-range bi-directional optical communication. Its advanced optical and electrical capabilities, combined with compliance to industry standards, make it a valuable component for modern networking and telecommunications infrastructure.
This CSFP transceiver delivers 1.25 Gbps bidirectional links over up to 20 km of 9/125 µm single-mode fiber. It complies with CSFP MSA Option 2, IEEE 802.3ah 1000BASE-BX20, and SFF-8472, providing two independent bidirectional optical channels (Ch A and Ch B). The 20U version uses a 1310 nm FP laser for TX and 1490 nm PIN RX, while the 20D version uses a 1490 nm DFB laser for TX and 1310 nm PIN RX. Operating from a 3.3 V supply, it supports real-time digital diagnostic monitoring (DDM) and offers hot-pluggable deployment with LC/UPC interface.
| Parameter | Value | Notes |
|---|---|---|
| Data rate | 1.25 Gbps (TX/RX) | IEEE 802.3ah BX20 compliant |
| Reach | 20 km | 9/125 µm SMF |
| TX wavelength | 1310 nm (U) / 1490 nm (D) | FP laser (1310), DFB laser (1490) |
| RX wavelength | 1490 nm (U) / 1310 nm (D) | — |
| TX output power | -9 to -3 dBm | Average |
| Extinction ratio | ≥8.2 dB | — |
| SMSR | ≥30 dB (1490 nm DFB) | — |
| Spectral width | ≤3.5 nm (1310 FP), ≤1 nm (1490 DFB) | — |
| RX sensitivity | ≤-19 dBm | BER ≤1×10⁻¹², ER = 8.2 dB, PRBS 2⁷-1 |
| RX overload | -3 dBm | — |
| LOS assert/de-assert | -38 dBm / -22 dBm; hysteresis 0.5–6 dB | LOS high = signal lost |
| Eye mask | IEEE 802.3ah compliant | Class 1 laser |
| Parameter | Value | Notes |
|---|---|---|
| Supply voltage | 3.13–3.47 V (nom. 3.3 V) | — |
| Max supply current | 450 mA (total for TX+RX) | — |
| Power supply noise | ≤100 mVp-p (100 Hz–1 MHz) | — |
| Case temperature | 0 °C to +70 °C | Operating |
| Connector | LC/UPC | Pluggable |
| Form factor | Compact SFP (CSFP, Option 2) | Hot-pluggable, dual-channel |
| Diagnostics | SFF-8472 DDM (Temp, Vcc, TxBias, TxPower, RxPower) | I²C addresses A0h/A2h (Ch1), B0h/B2h (Ch2) |
| Control/Status | Tx Disable, Tx Fault, LOS | I²C accessible |
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.
En Carritech Optics, garantizamos la calidad y fiabilidad de nuestros transceptores ópticos. Por eso ofrecemos con orgullo una garantía de por vida en todos los productos como testimonio de nuestro compromiso con la excelencia y la satisfacción del cliente.
Nuestra garantía de por vida proporciona una cobertura completa durante todo el ciclo de vida de sus transceptores ópticos, asegurándole una total tranquilidad al elegir Carritech Optics. La garantía cubre:
Si alguna vez necesita hacer una reclamación de garantía, nuestro equipo está aquí para ayudarle. Solo tienes que ponerte en contacto con nuestro equipo de asistencia con los datos de tu producto y te guiaremos a través de un proceso rápido y sin complicaciones para resolver el problema.
Carritech Optics se dedica a proporcionar soluciones ópticas de alta calidad en las que puede confiar a largo plazo. Con nuestra garantía de por vida, puede invertir con confianza en nuestros productos, sabiendo que estamos con usted en cada paso del camino.
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.
Opticode de Carritech es una solución avanzada de programación de transceptores que le ofrece una flexibilidad total en su red óptica. Diseñado para garantizar una compatibilidad perfecta con una amplia gama de sistemas OEM, Opticode le permite reconfigurar rápidamente los transceptores para satisfacer sus requisitos específicos. El resultado es un mayor control, una reducción de costes y una infraestructura más adaptable y preparada para el futuro.
Nuestro equipo de profesionales multilingües está a su disposición para ayudarle a entender nuestros productos y satisfacer sus necesidades. Solo tiene que introducir sus datos a continuación y nuestro equipo se pondrá en contacto con usted.
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