1.25G SFP Module WDM Optical Transceiver
Short Description:
Description: The 1.25G SFP Module WDM Optical Transceiver (BDTRP439S1SN/D-20) offers reliable, high-speed data transmission with a dual data rate of 1.25Gbps over a distance of up to 20km using single-mode fiber (SMF). This small form-factor pluggable (SFP) module is designed to meet the standards of IEEE 802.3z and IEEE 802.3u, making it compatible with a w…Description
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Description
Description:
The 1.25G SFP Module WDM Optical Transceiver (BDTRP439S1SN/D-20) offers reliable, high-speed data transmission with a dual data rate of 1.25Gbps over a distance of up to 20km using single-mode fiber (SMF). This small form-factor pluggable (SFP) module is designed to meet the standards of IEEE 802.3z and IEEE 802.3u, making it compatible with a wide range of network devices, including those from major brands like Cisco, Huawei, and more. It features Automatic Gain Control (AGC), eliminating the need for an external attenuator. 1.25 g 20km sfp module with its 1310nm FP laser and 1490nm PIN photo detector, this transceiver ensures efficient and stable operation in various networking environments. Ideal for Gigabit Ethernet networks, it offers digital diagnostics (DDM) and a TTL signal detect indicator for enhanced monitoring and performance. Its hot-pluggable design and single 3.3V power supply make it a versatile and easy-to-integrate solution for your network infrastructure.
1.25G SFP Module Features
High-Speed & Long-Distance Connectivity: Supports a dual data rate of 1.25Gbps for Gigabit Ethernet and offers flexible transmission options, reliably reaching distances of 10km, 20km, 40km, and up to 80km on single-mode fiber (SMF).
Fiber Capacity Doubling with WDM: Utilizes Wavelength Division Multiplexing (WDM) technology to transmit and receive data on different wavelengths (e.g., 1310nm/1490nm) over a single fiber. This optimizes infrastructure use and significantly reduces cabling requirements and costs.
Universal Compatibility & Compliance: Designed for hassle-free integration, it complies with IEEE 802.3, 802.3u, and 802.3z standards and the SFP MSA. It is tested for reliable performance with networking equipment from major vendors like Cisco and Huawei.
Advanced Digital Diagnostic Monitoring (DDM): Equipped with DDM capabilities for real-time monitoring of key parameters such as temperature, optical power, laser bias, and transceiver supply voltage. This feature enables proactive network management and simplifies fault detection.
Robust & User-Friendly Design: Features a hot-pluggable SFP form factor for easy installation and removal without powering down systems. It includes a TTL signal detect indicator, operates on a single 3.3V power supply, and is a Class 1 laser product compliant with international safety standards (EN 60825-1).
Block Diagram of 1.25 g 20km SFP module
Application:
- Switch to switch interface
- High speed I/O for file servers .
- Bus extension applications
Transmitter Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC =0℃ to +70 ℃
| PARAMETER | SYMBOL | MIN | TYP. | MAX | UNITS | NOTE |
| Output Optical Power
9/125 μm fiber |
Pout | -9 | — | -3 | dBm | Average |
| Extinction Ratio | ER | 9 | — | — | dB | |
| Center Wavelength | λC | 1260 | 1310 | 1360 | nm | |
| Spectral Width (RMS) | Δλ | — | — | 2.5 | nm | |
| Rise/Fall Time, (20−80%) | Tr, f | — | — | 260 | ps | |
| Relative Intensity Noise | RIN | — | — | -120 | dB/Hz | |
| Total Jitter | TJ | — | — | 227 | ps | |
| Output Eye | Compliant with IEEE802.3z | |||||
| Max. Pout TX-DISABLE Asserted | POFF | — | — | -45 | dBm | |
Receiver Electro-optical Characteristics
Vcc = 3.1 V to 3.5 V, TC =0℃ to +70 ℃
| PARAMETER | SYMBOL | MIN | TYP. | MAX | UNITS | NOTE |
| Optical Input Power-maximum | PIN | 0 | — | — | dBm | BER < 10−12 |
| Optical Input Power-minimum
(Sensitivity) |
PIN | — | — | -21 | dBm | BER < 10−12 |
| Operating Center Wavelength | λC | 1480 | 1580 | nm | ||
| Optical Return Loss | ORL | 14 | — | — | dB | λ=1480~1580nm |
| Optical isolation | ISO | — | — | -40 | dB | λ=1480~1580nm |
| Signal Detect-Asserted | PA | — | — | -21 | dBm | |
| Signal Detect-Deasserted | PD | -35 | — | dBm | ||
| Differential Output Voltage | VDIFF | 0.5 | — | 1.2 | V | |
| Data Output Rise, Fall Time
(20−80%) |
T r, f | — | — | 0.35 | ns | |
| Receiver Loss of Signal Output
Voltage-Low |
RX_LOSL
|
0 | — | 0.5 | V | |
| Receiver Loss of Signal Output
Voltage-High |
RX_LOSH | 2.4 | — | Vcc |
1.25 g 20km SFP module Suggested Transceiver Interface
Specification
Application
Order
| Product Model | Descriptions | Inquiry |
|---|---|---|
| BDTRP439L1SN-10 | 1000Base-LX,1.25G,LC connector,WDM, Wavelength:transmitter 1310nm/receiver 1490nm,10km. | Request Price |
| BDTRP493L1SN-10 | 1000Base-LX,1.25G,LC connector,WDM, Wavelength:transmitter 1490nm/receiver 1310nm,10km. | Request Price |
| BDTRP439L1SN-20 | 1000Base-LX,1.25G,LC connector,WDM, Wavelength:transmitter 1310nm/receiver 1490nm,20km. | Request Price |
| BDTRP493L1SN-20 | 1000Base-LX,1.25G,LC connector,WDM,wavelength:transmitter 1490nm/receiver 1310nm,20km. | Request Price |
| BDTRP439L1SN-40 | 1000Base-LX,1.25G,LC connector,WDM,wavelength:transmitter 1310nm/receiver 1490nm,40km. | Request Price |
| BDTRP493L1SN-40 | 1000Base-LX,1.25G,LC connector,WDM, Wavelength:transmitter 1490nm/receiver 1310nm,40km. | Request Price |
| BDTRP495L1SN-80 | 1000Base-LX,1.25G,LC connector,WDM, Wavelength:transmitter 1490nm/receiver 1550nm,80km. | Request Price |
| BDTRP459L1SN-80 | 1000Base-LX,1.25G,LC connector,WDM,Wavelength:transmitter 1550nm/receiver 1490nm,80km. | Request Price |
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2 reviews
5
2 responses
Carrying traffic in both directions over one fiber strand is the standout feature. The simplex SC connection keeps cabling tidy and saves fiber strands. With the wavelengths correctly paired at both ends, transmission works reliably in both directions. A useful design that performs well in practice.
Switching to single-fiber BiDi makes cable management much simpler since there’s no need to swap Tx/Rx patch cords during installation. Link stability on standard 9/125 SMF has been consistently solid so far.