D-Link DEM-220R – 100BASE-BX-U Single-Mode 20km SFP Transceiver with Simplex LC Connector, TX 1310nm / RX 1550nm & Hot-Swappable Design
Overview:
• The D-Link DEM-220R is a 100BASE-BX-U Single-Mode SFP Transceiver designed for compatible network devices with SFP slots.
• It supports Fast Ethernet optical transmission over single-mode fiber using one fiber core for both transmission and reception.
• The module uses a Simplex LC connector and operates with TX 1310nm / RX 1550nm wavelength direction.
• It supports transmission distance up to 20km, making it suitable for long-distance Fast Ethernet fiber links, MAN networks, service provider links, and building-to-building connections.
• The DEM-220R is hot-swappable and should be used with the matching opposite-end DEM-220T module for correct wavelength operation.
Key Features:
• 100BASE-BX-U SFP transceiver
• Single-mode fiber support
• Bi-directional transmission over one fiber core
• Distance up to 20km
• Simplex LC connector
• TX 1310nm / RX 1550nm wavelength
• IEEE 802.3ah 100BASE-BX compliant
• Hot-swappable design
• Rugged metal SFP housing
• Designed for long-distance Fast Ethernet fiber links
• Suitable for MAN and service provider networks
• Designed to pair with DEM-220T
Technical Specifications:
General:
• Brand: D-Link
• Model: DEM-220R
• Product Type: Fast Ethernet Bi-Directional SFP Transceiver
• Standard: IEEE 802.3ah 100BASE-BX
• Interface: SFP
• Fiber Media Support: Single-Mode Fiber
• Application: Fast Ethernet Fiber Uplink, MAN Link, Service Provider Network, Building-to-Building Fiber Link
Interface and Fiber Specifications:
• Connector: Simplex LC
• Fiber Type: Single-Mode Fiber 9/125µm
• Transmission Type: Bi-Directional over Single Fiber
• Distance: Up to 20km
• Wavelength: TX 1310nm / RX 1550nm
• Polishing Type: UPC
Optical Performance:
• TX Optical Power: -14dBm to -8dBm
• RX Optical Power: -32dBm to -3dBm
• Receiver Sensitivity: -32dBm
• Minimum Power Budget: 18dB
• Maximum Power Budget: 30dB
Power and Reliability:
• Power Source: 200mA
• Heat Generated: 1.78kJ/h
• MTBF: 3,259,763 Hours
Physical Specifications:
• Dimensions: 55.5 × 13.4 × 11.28mm
• Weight: 19.1g
• Housing: Rugged Metal SFP Housing
Compliance and Safety:
• EMI Certifications: FCC Class B, ICES-003 Class B, CE Class B, VCCI Class B
• Safety: TUV, UL, FDA
• RoHS: Compliant
Applications:
• Fast Ethernet single-fiber uplinks
• MAN and service provider fiber links
• Building-to-building fiber connectivity
• Long-distance network extension up to 20km
• Switch-to-switch Fast Ethernet fiber links
• Fiber links where only one fiber core is available
• Enterprise and telecom network environments
Connect Gates Recommendation:
• Connect Gates recommends the D-Link DEM-220R for projects that require Fast Ethernet single-fiber bi-directional connectivity up to 20km.
• It is suitable when only one single-mode fiber core is available and a 100Mbps fiber link is required.
• The module should be paired with DEM-220T at the opposite end to match the TX/RX wavelengths correctly.
• For proper installation, Connect Gates recommends checking SFP slot compatibility, single-mode fiber availability, Simplex LC connector compatibility, required distance, and opposite-end wavelength before deployment.