Product Overview
COMMANDO Lightning FIBER SFP-SM-1G-BD-20K is a 1.25Gb/s SFP (Small Form Pluggable) bi-directional optical transceiver operating with Tx 1490nm / Rx 1310nm wavelengths over single-mode fiber. The transceiver is based on the Gigabit Ethernet IEEE 802.3 standard and Fiber Channel FC-PI-2 Rev. 7.0, providing a fast and reliable optical interface for Gigabit Ethernet and Fiber Channel applications.
The module uses a single LC connector for bi-directional optical transmission and supports transmission distances of up to 20km over 9/125µm single-mode fiber.
The SFP-SM-1G-BD-20K implements digital diagnostics through a 2-wire serial interface compliant with the SFP MSA and SFF-8472 standard. The internal microcontroller monitors transceiver operating parameters including temperature, laser bias current, transmitted optical power, received optical power and supply voltage in real time.
The module supports internally calibrated digital diagnostic monitoring and provides alarm and warning functions when monitored operating parameters exceed factory-set thresholds.
Product Highlights
- Up to 25Gb/s bi-directional data links
- Tx 1490nm / Rx 1310nm bi-directional optical transmission
- Single LC connector
- Compliant with IEEE 802.3z Gigabit Ethernet
- Compatible with SFP MSA
- Hot-pluggable SFP footprint
- 1490nm DFB laser transmitter
- Built-in Digital Diagnostic Monitoring (DDM) functions
- Up to 20km on 9/125µm single-mode fiber
- Single power supply 3V
- Supply voltage range 14V to 3.46V
- 2-wire serial communication interface
- Internally calibrated digital diagnostics
- Real-time monitoring of:
- Transceiver temperature
- Laser bias current
- Transmitted optical power
- Received optical power
- Transceiver supply voltage
- Supports optical parameter alarm and warning thresholds
- Supports RX_LOS signal monitoring
- Supports TX_DIS signal monitoring and control
- Supports TX_FAULT signal monitoring
- A0h/A2h device register interface
- Security Level 1 password-protected write access
- RoHS compliant
- Operating Temperature Range (Case Temperature): 0°C to 70°C
- Class 1 laser product compliant with EN 60825-1
Features and Benefits
Bi-Directional Fiber Transmission
The SFP-SM-1G-BD-20K uses a single optical fiber and a single LC connector for bi-directional communication. The transmitter operates at 1490nm, while the receiver operates at 1310nm.
Gigabit Ethernet and Fiber Channel Support
The transceiver supports data rates up to 1.25Gb/s and is specified for Gigabit Ethernet and Fiber Channel applications.
Extended 20km Transmission
The module supports transmission distances up to 20km using 9/125µm single-mode fiber, providing long-distance optical connectivity for compatible network equipment.
Digital Diagnostic Monitoring
The module provides digital diagnostic information through a 2-wire serial communication interface. The internal microcontroller continuously accesses operating parameters including temperature, voltage, laser bias current, Tx optical power and Rx optical power.
Alarm and Warning Monitoring
The module implements alarm functions and factory-defined warning thresholds. The monitored operating parameters can generate alarms or warnings when they exceed defined operating limits.
Hot-Pluggable Design
The SFP module uses a standard hot-pluggable SFP footprint, allowing installation and removal without requiring replacement of the complete network device.
Industrial Temperature Operation
The COMMANDO SFP-SM-1G-BD-20K supports a 0°C to 70°C case-temperature operating range.
Low-Voltage Single Supply
The module operates from a nominal 3.3V supply, with an input voltage range of 3.14V to 3.46V.
Optical Protection and Control Functions
The module provides TX Disable, TX Fault, and RX LOS interface functions for controlling and monitoring the optical transceiver.
Security-Level Write Protection
The module provides Security Level 1 access protection for A0h/A2h device registers. A password mechanism is specified for entering the security-level working state before protected device information can be written.