DEM-331T

1000Base-BX-D (Tx:1550 nm, Rx:1310 nm) Single-Mode WDM SFP transceiver (up to 20/40 km)
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Description

The DEM-331T/DD and DEM-331R/DD bidirectional Gigabit SFP fiber transceivers are external transceivers designed for insertion in SFP (Small Form-Factor Pluggable) slots of network devices for transmission and reception of data signals on the fber cables. These transceivers provide the Gigabit operation and physical compactness to deliver the speed, reliable long-distance data transfer, and deployment fexibility that today’s fiber networks require.
Ideal for Long Distance Application
The DEM-331T/DD and DEM-331R/DD transceivers can be used to connect together switches, servers and fiber modules on a campus or metropolitan area network (MAN). Providing up to 20 km (DEM-331T/20KM/DD and DEM-331R/20KM/DD) or 40 km (DEM-331T/DD and DEM-331R/DD) of fiber cable distance, these highly integrated transceivers offer low jitter performance for extended optical link support without any degradation in performance.
Reliable Transmission
The DEM-331T/DD and DEM-331R/DD transceivers combine transmitting and receiving signals onto one fiber strand using two wavelengths. These transceivers are used in pair. At one end, one transceiver uses one wavelength to transmit and a second wavelength to receive. At the other end, the other transceiver flips that relationship.
Standard Compliance
The DEM-331T/DD and DEM-331R/DD transceivers use standard simplex LC connectors for fiber cable connection. They conform to industry standards and are interoperable with D-Link Gigabit switches. Hot-swap capability allows network administrators to plug or unplug them from the SFP slots without having to turn off the power of the connected device.

General features

Standard
• IEEE 802.3z 1000Base-BX-D
Wavelength
• Tx: 1550 nm, Rx: 1310 nm
Data Rate
• 1.25 Gbps
Connector
• Simplex LC
Fiber Type
• 9/125 um Single-mode Fiber
Maximum Fiber Cable Length
• 20 km (DEM-331T/20KM)
• 40 km (DEM-331T)
Transmit Power Range
• -3 to -9 dBm (DEM-331T/20KM)
• -5 to 0 dBm (DEM-331T)
Receive Power Range
• -3 to -22 dBm (DEM-331T/20KM)
• -3 to -24 dBm (DEM-331T)
Sensitivity
• -22 dBm (DEM-331T/20KM)
• -24 dBm (DEM-331T)
Physical Parameters
Power Support
• 3.3 V
Supply Current
• 220 mA (DEM-331T/20KM)
• 300 mA (DEM-331T)
Temperature
• Operating: 0° to 70°C
• Storage: -40° to 85°C
Humidity
• DEM-331T/20KM
Operating: 0% to 85%
Storage: 0% to 85%
• DEM-331T
Operating: 5% to 95%
Storage: 5% to 95%
Dimensions
• 55.4 mm x 13.7 mm x 8.5 mm


Certificates

Order info

DEM-330T/DD/E1 1000Base-BX-D (Tx:1550 nm, Rx:1310 nm) Single-Mode WDM SFP transceiver (up to 20/40 km)

Pictures

DEM-331T/20KM
Back view
Left side view
Front view
DEM-331T
Front view
View from the right

Downloads

Support Resources