Fully compatible Carritech alternative
Carritech Optics can offer CT-SFP+-BX-20D as a fully compatible, high-quality alternative to Nokia 3FE48235AB. This Carritech alternative is matched against the key optical specifications and can be programmed and tested for your network requirements.
Carritech part number: CT-SFP+-BX-20D
10G BIDI XFP 1330/1270NM 20KM
Carritech CT-SFP+BX-20U and CT-SFP+BX-20D are 10Gbps bi-directional SFP+ transceivers designed for single-mode fiber links up to 20 km. Featuring DFB lasers and PIN receivers, they enable cost-efficient 10G Ethernet transmission over a single fiber strand with complementary wavelengths.
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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.
Review the technical specifications, applications, features, delivery information and warranty coverage for this product.
The 10Gbps Bi-Directional XFP Transceiver is a high-performance module designed for medium-range data communication over single-mode fiber (SMF) up to 20 kilometers. It supports data rates ranging from 9.95Gbps to 11.3Gbps, making it suitable for applications such as 10GBASE-BX Ethernet, SONET OC-192/SDH STM-I64.1, and other high-speed communication systems. This transceiver integrates a 1270nm DFB laser and PIN receiver (CT-XFP-BX-20U) or a 1330nm DFB laser and PIN receiver (CT-XFP-BX-20D) for robust performance. Housed in a hot-pluggable XFP form factor with an LC connector, it complies with XFP Multi-Source Agreement (MSA) and IEEE 802.3ae standards.
Operating on a single +3.3V power supply with power dissipation below 2W, the transceiver is energy-efficient. It functions within a case operating temperature range of 0°C to 70°C, suitable for commercial environments. The module’s advanced design includes a two-wire interface for integrated digital diagnostic monitoring (DDM), providing real-time insights into key parameters like temperature, voltage, bias current, and optical power.
Optically, the transmitter offers an average output power of -5dBm to 0dBm, with an extinction ratio of 3.5dB and compliance with IEEE 802.3ae eye mask requirements. The receiver sensitivity is rated at -15dBm, with an overload threshold of 0.5dBm. The LOS (Loss of Signal) feature provides reliable link monitoring, with assert and deassert thresholds of -30dBm and -18dBm, respectively.
Electrically, the transceiver features a differential impedance of 100Ω, supporting input swing differentials from 120mV to 820mV. It includes functionality for Transmitter Disable (TX Disable) and Fault Indicators, offering precise control and fault management. The module also supports serial EEPROM for device identification and diagnostics, accessible via the 2-wire serial interface.
In summary, the 10Gbps Bi-Directional XFP Transceiver is a robust and versatile solution for high-speed optical communication over medium distances. Its compliance with industry standards, advanced diagnostic capabilities, and efficient design make it an essential component for modern networking and telecommunications systems.
These hot-pluggable modules support data rates up to 11.1 Gbps and comply with IEEE 802.3ae 10GBASE-LR/LW, SFF-8431, and SFF-8472 standards. They use a simplex LC interface: BX-20U transmits at 1270 nm and receives at 1330 nm, while BX-20D transmits at 1330 nm and receives at 1270 nm. Designed for 20 km reach, they feature DDMI for real-time monitoring of temperature, bias, Tx/Rx power, and supply voltage. Power dissipation is <1.5 W with a 3.3 V supply, and industrial-grade operation is supported from −40 °C to +85 °C.
Key Parameters
| Specification | CT-SFP+BX-20U | CT-SFP+BX-20D | Notes |
|---|---|---|---|
| Form factor / connector | SFP+ (hot-pluggable), LC simplex | SFP+ (hot-pluggable), LC simplex | Single-fiber bidirectional |
| Data rate | Up to 11.1 Gbps | Up to 11.1 Gbps | 10.3125 Gbps nominal |
| Reach | Up to 20 km SMF | Up to 20 km SMF | — |
| Tx wavelength | 1270 nm | 1330 nm | DFB laser |
| Rx wavelength | 1330 nm | 1270 nm | PIN receiver |
| Tx optical power | −5.4 to −1 dBm | −5.4 to −1 dBm | Average |
| Laser off power | ≤ –30 dBm | ≤ –30 dBm | — |
| Receiver sensitivity | ≤ –15 dBm | ≤ –15 dBm | BER ≤ 10⁻¹² |
| Receiver overload | 0.5 dBm max | 0.5 dBm max | — |
| Extinction ratio | ≥ 3.5 dB | ≥ 3.5 dB | — |
| Side-mode suppression | ≥ 30 dB | ≥ 30 dB | — |
| Supply voltage | 3.14 – 3.47 V | 3.14 – 3.47 V | Single 3.3 V supply |
| Power consumption | <1.5 W (Typ. 350 mA) | <1.5 W (Typ. 350 mA) | — |
| Diagnostics | Temp., bias, Tx/Rx power, Vcc | Temp., bias, Tx/Rx power, Vcc | Digital diagnostics (DDMI) |
| Operating case temp. | −40 °C to +85 °C | −40 °C to +85 °C | Industrial grade |
| Compliance | IEEE 802.3ae 10GBASE-LR/LW, SFF-8431, SFF-8472, RoHS, EN 60825 Class 1 | Same | Standards compliant |
Carritech Optics can offer a fully compatible, high-quality alternative to Nokia 3FE48235AB.
Carritech part number: CT-SFP+-BX-20D
At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers, including the 3FE48235AB, 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.
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